JEE Main & Advanced Chemistry Aldehydes, Ketones Question Bank

done Properties Total Questions - 177

• question_answer1)
  Identify the reactant X and the product Y                 \[C{{H}_{3}}-CO-C{{H}_{3}}+X\to \underset{{}}{\mathop{{{(C{{H}_{3}})}_{3}}}}\,C-OMg-Cl\]                                                                                                                                                 \[Y+Mg\ (OH)\ Cl\] [Kerala PMT 2003]
  A)
                  \[X=MgC{{l}_{2}};\ \ Y=C{{H}_{3}}CH=C{{H}_{2}}\] done clear
  B)
                  \[X=C{{H}_{3}}MgCl;\ Y={{C}_{2}}{{H}_{5}}COC{{H}_{3}}\] done clear
  C)
                  \[X=C{{H}_{3}}MgCl;\ Y={{(C{{H}_{3}})}_{3}}\ C-OH\] done clear
  D)
                  \[X={{C}_{2}}{{H}_{5}}MgCl;\,Y={{(C{{H}_{3}})}_{3}}C-OH\] done clear
  View Solution play_arrow

• question_answer2)
  When m-chlorobenzaldehyde is treated with 50% KOH solution, the product (s) obtained is (are) [CBSE PMT 2003]
  A)
                                  done clear
  B)
                                  done clear
  C)
                                  done clear
  D)
                  done clear
  View Solution play_arrow

• question_answer3)
  A and B in the following reactions are \[R-\underset{\underset{O}{\mathop{||}}\,}{\mathop{C}}\,-{R}'\underset{KCN}{\mathop{\xrightarrow{HCN}}}\,A\xrightarrow{B}\begin{matrix}    R  \\    R  \\ \end{matrix}\,>C<\begin{array}{*{35}{l}}    OH  \\    C{{H}_{2}}N{{H}_{2}}  \\ \end{array}\] [CBSE PMT 2003]
  A)
                  \[A=RR'C<\begin{matrix}    CN  \\    OH  \\ \end{matrix},B-LiAl{{H}_{4}}\] done clear
  B)
                  \[A=RR'C<\begin{array}{*{35}{l}}    OH  \\    COOH  \\ \end{array},\,\,B-N{{H}_{3}}\] done clear
  C)
                  \[A=RR'C<\begin{matrix}    CN  \\    OH  \\ \end{matrix}\ ,B={{H}_{3}}{{O}^{\oplus }}\] done clear
  D)
                  \[A=RR'C{{H}_{2}}CN,B=NaOH\] done clear
  View Solution play_arrow

• question_answer4)
  Reduction of Aldehydes and Ketones to hydrocarbon take place in the presence of         [CPMT 2003]
  A)
                  Zn amalgam and HCl acid done clear
  B)
                  \[Pd/BaS{{O}_{4}}\] done clear
  C)
                  Anhydrous \[AlC{{l}_{3}}\] done clear
  D)
                  Ni/Pt done clear
  View Solution play_arrow

• question_answer5)
  Reduction of \[>C=O\] to \[C{{H}_{2}}\] can be carried out with [DCE 2000]
  A)
                  Catalytic reduction          done clear
  B)
                  \[Na/{{C}_{2}}{{H}_{5}}OH\] done clear
  C)
                  Wolf-Kischner reduction               done clear
  D)
                  \[LiAl{{H}_{4}}\] done clear
  View Solution play_arrow

• question_answer6)
  For \[{{C}_{6}}{{H}_{5}}CHO\] which of the following is incorrect [CPMT 1985]
  A)
                  On oxidation it yields benzoic acid done clear
  B)
                  It is used in perfumery done clear
  C)
                  It is an aromatic aldehyde done clear
  D)
                  On reduction yields phenol done clear
  View Solution play_arrow

• question_answer7)
  Grignard reagent on reaction with acetone forms [BHU 1995; RPMT 2002; Roorkee 1990]
  A)
                  Tertiary alcohol done clear
  B)
                  Secondary alcohol done clear
  C)
                  Acetic acid           done clear
  D)
                  Acetaldehyde done clear
  View Solution play_arrow

• question_answer8)
  Which of the following is incorrect           [CBSE PMT 2001]
  A)
  \[FeC{{l}_{3}}\] is  used in the detection of phenols done clear
  B)
  Fehling solution is used in the detection of glucose done clear
  C)
  Tollen's reagent is used in detection of unsaturation done clear
  D)
  \[NaHS{{O}_{3}}\] is used in the detection of carbonyl compounds done clear
  View Solution play_arrow

• question_answer9)
  Consider the following statement Acetophenone can be prepared by (1)          Oxidation of 1-phenylethanol (2)          Reaction of benzalthanol with methyl magnesium bromide (3)          Friedel craft?s reaction of benzene with acetyl chloride (4)          Distillation of calcium benzoate [SCRA 2001]
  A)
                  1 and 2 done clear
  B)
                  1 and 4 done clear
  C)
                  1 and 3  done clear
  D)
                  3 and 4 done clear
  View Solution play_arrow

• question_answer10)
  Which one of the following pairs is not correctly matched [SCRA 2001]
  A)
                  \[>C=O\xrightarrow{\text{Clemenson }\!\!'\!\!\text{ s reduction}}>C{{H}_{2}}\] done clear
  B)
                  \[>C=O\xrightarrow{\text{Wolf -Kishner reduction}}>CHOH\] done clear
  C)
                  \[-COCl\xrightarrow{\text{Rosenmund }\!\!'\!\!\text{ s reduction}}CHO\] done clear
  D)
                  \[-C\equiv N\xrightarrow{\text{Stephen reduction}}CHO\] done clear
  View Solution play_arrow

• question_answer11)
  Which of the following gives aldol condensation reaction [CPMT 2001]
  A)
                  \[{{C}_{6}}{{H}_{5}}OH\]               done clear
  B)
                  \[{{C}_{6}}{{H}_{5}}-\overset{O\,\,}{\mathop{\overset{||\,\,\,}{\mathop{C-}}\,}}\,{{C}_{6}}{{H}_{5}}\] done clear
  C)
                  \[C{{H}_{3}}C{{H}_{2}}-\overset{O\,\,}{\mathop{\overset{||\,\,\,}{\mathop{C-}}\,}}\,C{{H}_{3}}\]          done clear
  D)
                  \[{{(C{{H}_{3}})}_{3}}C-\overset{O\,\,}{\mathop{\overset{||\,\,\,}{\mathop{C-}}\,}}\,C{{H}_{3}}\] done clear
  View Solution play_arrow

• question_answer12)
  Which of the following products is formed when benzaldehyde is treated with \[C{{H}_{3}}MgBr\] and the addition product so obtained is subjected to acid hydrolysis [Haryana CEET 2000]
  A)
                  Secondary alcohol           done clear
  B)
                  A primary alcohol done clear
  C)
                  Phenol  done clear
  D)
                  Tert-Butyl alcohol done clear
  View Solution play_arrow

• question_answer13)
  Aldol condensation will not be observed in          [GATE 2001]
  A)
                  Chloral  done clear
  B)
                  Phenyl acetaldehyde done clear
  C)
                  Hexanal                done clear
  D)
                  Ethanol done clear
  View Solution play_arrow

• question_answer14)
  Which of the following compounds containing carbonyl group will give coloured crystalline compound with                                                 [Kerala (Med.) 2001]
  A)
                  \[C{{H}_{3}}COCl\]          done clear
  B)
                  \[C{{H}_{3}}COC{{H}_{3}}\] done clear
  C)
                  \[C{{H}_{3}}CO(O{{C}_{2}}{{H}_{5}})\,\]                done clear
  D)
                  \[C{{H}_{3}}CON{{H}_{2}}\] done clear
  E)
                  \[HO({{C}_{6}}{{H}_{4}})COOH\] done clear
  View Solution play_arrow

• question_answer15)
  Which of the following organic compounds exhibits positive Fehling test as well as iodoform test [MP PET 1994; KCET 2001]
  A)
                  Methanal            done clear
  B)
                  Ethanol done clear
  C)
                  Propanone         done clear
  D)
                  Ethanal done clear
  View Solution play_arrow

• question_answer16)
  Which of the following compound will undergo self aldol condensation in the presence of cold dilute alkali [CBSE PMT 1994]
  A)
                  \[{{C}_{6}}{{H}_{5}}CHO\]            done clear
  B)
                  \[C{{H}_{3}}C{{H}_{2}}CHO\] done clear
  C)
                  \[CH\equiv C-CHO\]       done clear
  D)
                  \[C{{H}_{2}}=CH-CHO\] done clear
  View Solution play_arrow

• question_answer17)
  Acetaldehyde when treated with dilute NaOH gives [EAMCET 1998]
  A)
                  \[C{{H}_{3}}C{{H}_{2}}OH\] done clear
  B)
                  \[C{{H}_{3}}COOH\] done clear
  C)
                  \[C{{H}_{3}}-\underset{\underset{OH}{\mathop{|}}\,}{\mathop{CH}}\,-C{{H}_{2}}-CHO\] done clear
  D)
                  \[C{{H}_{3}}-C{{H}_{3}}\] done clear
  View Solution play_arrow

• question_answer18)
  \[{{C}_{2}}{{H}_{5}}CHO\] and \[{{(C{{H}_{3}})}_{2}}CO\] can be distinguished by testing with                     [EAMCET 1998; CPMT 1994, 97; MP PET 1995; MP PMT 1996; RPMT 1997, 99]
  A)
                  Phenyl hydrazine             done clear
  B)
                  Hydroxylamine done clear
  C)
                  Fehling solution                done clear
  D)
                  Sodium bisulphite done clear
  View Solution play_arrow

• question_answer19)
  Which of the following will undergo aldol condensation [IIT 1998]
  A)
                  Acetaldehyde    done clear
  B)
                  Propanaldehyde done clear
  C)
                  Benzaldehyde   done clear
  D)
                  Trideuteroacetaldehyde done clear
  View Solution play_arrow

• question_answer20)
  Which of the following oxidation reactions can be carried out with chromic acid in aqueous acetone at \[5-{{10}^{o}}C\] [Roorkee Qualifying 1998]
  A)
  \[C{{H}_{3}}{{(C{{H}_{2}})}_{3}}C\equiv C-\underset{\underset{OH}{\mathop{|}}\,}{\mathop{CH}}\,-C{{H}_{3}}\to \] \[C{{H}_{3}}{{(C{{H}_{2}})}_{3}}C\equiv \overset{\begin{smallmatrix}  O \\  |\,\,| \end{smallmatrix}}{\mathop{C}}\,-C-C{{H}_{3}}\] done clear
  B)
  \[C{{H}_{3}}{{(C{{H}_{2}})}_{3}}CH=CH-C{{H}_{2}}OH\to \]\[C{{H}_{3}}{{(C{{H}_{2}})}_{3}}CH=CH-CHO\] done clear
  C)
  \[{{C}_{6}}{{H}_{5}}C{{H}_{3}}\to {{C}_{6}}{{H}_{5}}COOH\] done clear
  D)
  \[C{{H}_{3}}{{(C{{H}_{2}})}_{3}}C{{H}_{2}}OH\to C{{H}_{3}}{{(C{{H}_{2}})}_{3}}CHO\] done clear
  View Solution play_arrow

• question_answer21)
  Acetaldehyde cannot show         [AIIMS 1997]
  A)
                  Iodoform test    done clear
  B)
                  Lucas test done clear
  C)
                  Benedict's test  done clear
  D)
                  Tollen's test done clear
  View Solution play_arrow

• question_answer22)
  Benzaldehyde \[+NaOH\to \] [CPMT 1997, 2001; CBSE PMT 1999; Pb. PMT 1999]
  A)
                  Benzyl alcohol   done clear
  B)
                  Benzoic alcohol done clear
  C)
                  Hydrobenzamide             done clear
  D)
                  Cinnamic acid done clear
  View Solution play_arrow

• question_answer23)
  The following reagent converts \[{{C}_{6}}{{H}_{5}}COCHO\] to \[{{C}_{6}}{{H}_{5}}CHOHCOONa\]          [Roorkee Qualifying 1998]
  A)
                  Aq. NaOH            done clear
  B)
                  Acidic \[N{{a}_{2}}{{S}_{2}}{{O}_{3}}\] done clear
  C)
                  \[N{{a}_{2}}Cr{{O}_{4}}/{{H}_{2}}S{{O}_{4}}\]     done clear
  D)
                  \[NaN{{O}_{2}}/HCl\] done clear
  View Solution play_arrow

• question_answer24)
  Benzyl alcohol and sodium benzoate is obtained by the action of sodium hydroxide on benzaldehyde. This reaction is known as                                             [KCET 2005]
  A)
  Perkin's reaction              done clear
  B)
  Cannizzaro's reaction done clear
  C)
  Sandmeyer's reaction    done clear
  D)
  Claisen condensation done clear
  View Solution play_arrow

• question_answer25)
  To distinguish between formaldehyde and acetaldehyde, we require                                     [Orissa PMT 1987]
  A)
                  Tollen's reagent                done clear
  B)
                  Fehling's solution done clear
  C)
                  Schiff's reagent done clear
  D)
                  Caustic soda solution done clear
  View Solution play_arrow

• question_answer26)
  Which of the following does not give iodoform test [AIIMS 1992; MP PMT 1990, 96; CET Pune 1998 DPMT 1981; CPMT 1976]
  A)
                  \[C{{H}_{3}}C{{H}_{2}}OH\]         done clear
  B)
                  \[C{{H}_{3}}OH\] done clear
  C)
                  \[C{{H}_{3}}CHO\]           done clear
  D)
                  \[PhCOC{{H}_{3}}\] done clear
  View Solution play_arrow

• question_answer27)
  Which of the following will not give iodoform test [Kurukshetra CEE 1991; Bihar CEE 1995; CBSE PMT 1998; MP PMT 2004]
  A)
                  Ethanal done clear
  B)
                  Ethanol done clear
  C)
                  2-propanone     done clear
  D)
                  3-pentanone done clear
  View Solution play_arrow

• question_answer28)
  Which of the following will not give the iodoform test [MNR 1994]
  A)
                  Acetophenone done clear
  B)
                  Ethanal done clear
  C)
                  Benzophenone done clear
  D)
                  Ethanol done clear
  View Solution play_arrow

• question_answer29)
  Haloform test is given by the following substance [EAMCET 1988]
  A)
                  HCHO    done clear
  B)
                  \[{{(C{{H}_{3}})}_{2}}CO\] done clear
  C)
                  \[C{{H}_{3}}OC{{H}_{3}}\]            done clear
  D)
                  \[C{{H}_{3}}C{{H}_{2}}Cl\] done clear
  View Solution play_arrow

• question_answer30)
  Dimethyl ketones are usually characterised through [MNR 1992]
  A)
                  Tollen's reagent                done clear
  B)
                  Iodoform test done clear
  C)
                  Schiff's test         done clear
  D)
                  Benedict's reagent done clear
  View Solution play_arrow

• question_answer31)
  The light yellow compound produced when acetone reacts with iodine and alkali, is        [MP PMT 1992; EAMCET 1993]
  A)
                  \[C{{H}_{3}}.CO.C{{H}_{2}}I\]     done clear
  B)
                  \[C{{H}_{3}}I\] done clear
  C)
                  \[CH{{I}_{3}}\]   done clear
  D)
                  None of these done clear
  View Solution play_arrow

• question_answer32)
  If formaldehyde and KOH are heated, then we get [MP PET 1999; KCET 2000]
  A)
                  Acetylene           done clear
  B)
                  Methane done clear
  C)
                  Methyl alcohol  done clear
  D)
                  Ethyl formate done clear
  View Solution play_arrow

• question_answer33)
  Which of the following reagent reacts differently with \[HCHO,\,C{{H}_{3}}CHO\] and \[C{{H}_{3}}COC{{H}_{3}}\]            [MP PET 1999]
  A)
                  HCN       done clear
  B)
                  \[N{{H}_{2}}N{{H}_{2}}\] done clear
  C)
                  \[N{{H}_{2}}OH\]             done clear
  D)
                  \[N{{H}_{3}}\] done clear
  View Solution play_arrow

• question_answer34)
  Acetaldehyde reacts with \[{{C}_{2}}{{H}_{5}}MgCl\] the final product is [Pb. CET 1985]
  A)
                  An aldehyde      done clear
  B)
                  A ketone done clear
  C)
                  A primary alcohol             done clear
  D)
                  A secondary alcohol done clear
  View Solution play_arrow

• question_answer35)
  Treatment of propionaldehyde with dilute NaOH solution gives                                                [MNR 1992]
  A)
                  \[C{{H}_{3}}C{{H}_{2}}COOC{{H}_{2}}C{{H}_{2}}C{{H}_{3}}\] done clear
  B)
                  \[C{{H}_{3}}C{{H}_{2}}CHOHCH(C{{H}_{3}})CHO\] done clear
  C)
                  \[C{{H}_{3}}C{{H}_{2}}CHOHC{{H}_{2}}C{{H}_{2}}CHO\] done clear
  D)
                  \[C{{H}_{3}}C{{H}_{2}}COC{{H}_{2}}C{{H}_{2}}CHO\] done clear
  View Solution play_arrow

• question_answer36)
  Aldol condensation of acetaldehyde involves the formation of which of the following intermediate [Pb. CET 1986]
  A)
                  Acetate ion         done clear
  B)
                  A carbanion done clear
  C)
                  A carbonium ion               done clear
  D)
                  A free radical done clear
  View Solution play_arrow

• question_answer37)
  \[3C{{H}_{3}}COC{{H}_{3}}\xrightarrow{HCl}{{(C{{H}_{3}})}_{2}}C=CH-CO-CH=C{{(C{{H}_{3}})}_{2}}\]                 This polymer  is obtained when acetone is saturated with hydrogen chloride gas, B can be            [CBSE PMT 1989]
  A)
                  Phorone              done clear
  B)
                  Formose done clear
  C)
                  Diacetone alcohol            done clear
  D)
                  Mesityl oxide done clear
  View Solution play_arrow

• question_answer38)
  Aromatic aldehydes undergo disproportionation in presence of sodium or potassium hydroxide to give corresponding alcohol and acid. The reaction is known as            [MNR 1987]
  A)
                  Wurtz's reaction               done clear
  B)
                  Cannizzaro reaction done clear
  C)
                  Friedel-Craft's reaction  done clear
  D)
                  Claisen reaction done clear
  View Solution play_arrow

• question_answer39)
  m-chlorobenzaldehyde on reaction with conc. KOH at room temperature gives [IIT-JEE 1991]
  A)
                  Potassium m-chlorobenzoate and m-hydroxy benzaldehyde done clear
  B)
                  m-hydroxy benzaldehyde and m-chlorobenzyl alcohol done clear
  C)
                  m-chlorobenzyl alcohol and m-hydroxy benzyl alcohol done clear
  D)
                  Potassium m-chlorobenzoate and m-chlorobenzyl alcohol done clear
  View Solution play_arrow

• question_answer40)
  Which of the following does not give yellow precipitate with \[NaOH+KI\]                                            [MP PMT 1997]
  A)
                  Acetone               done clear
  B)
                  Acetaldehyde done clear
  C)
                  Benzaldehyde   done clear
  D)
                  Acetophenone done clear
  View Solution play_arrow

• question_answer41)
  The alkaline \[CuS{{O}_{4}}\] containing sodium potassium tartrate does not react with [MP PMT 1997]
  A)
                  \[C{{H}_{3}}CHO\]           done clear
  B)
                  \[{{C}_{2}}{{H}_{5}}CHO\] done clear
  C)
                  \[{{C}_{6}}{{H}_{5}}C{{H}_{2}}CHO\]       done clear
  D)
                  \[{{C}_{6}}{{H}_{5}}CHO\] done clear
  View Solution play_arrow

• question_answer42)
  Correct order of reactivity of \[C{{H}_{3}}CHO,\,{{C}_{2}}{{H}_{5}}COC{{H}_{3}}\] and \[C{{H}_{3}}COC{{H}_{3}}\] is          [MP PMT 1991]
  A)
                  \[C{{H}_{3}}CHO>C{{H}_{3}}COC{{H}_{3}}>C{{H}_{3}}CO{{C}_{2}}{{H}_{5}}\] done clear
  B)
                  \[{{C}_{2}}{{H}_{5}}COC{{H}_{3}}>C{{H}_{3}}COC{{H}_{3}}>C{{H}_{3}}CHO\] done clear
  C)
                  \[C{{H}_{3}}COC{{H}_{3}}>C{{H}_{3}}CHO>{{C}_{2}}{{H}_{5}}COC{{H}_{3}}\] done clear
  D)
                  \[C{{H}_{3}}COC{{H}_{3}}>{{C}_{2}}{{H}_{5}}COC{{H}_{3}}>C{{H}_{3}}CHO\] done clear
  View Solution play_arrow

• question_answer43)
  One mole of an organic compound requires 0.5 mole of oxygen to produce an acid. The compound may be [NCERT 1981]
  A)
                  Alcohol done clear
  B)
                  Ether done clear
  C)
                  Ketone done clear
  D)
                  Aldehyde done clear
  View Solution play_arrow

• question_answer44)
  Aldehydes can be oxidised by    [NCERT 1983]
  A)
                  Tollen's reagent                done clear
  B)
                  Fehling solution done clear
  C)
                  Benedict solution             done clear
  D)
                  All of these done clear
  View Solution play_arrow

• question_answer45)
  Silver mirror is a test for                [DPMT 1983; CBSE PMT 1988]
  A)
                  Aldehydes          done clear
  B)
                  Thio alcohols done clear
  C)
                  Amines done clear
  D)
                  Ethers done clear
  View Solution play_arrow

• question_answer46)
  \[C{{H}_{3}}CH=CHCHO\] is oxidised to \[C{{H}_{3}}CH=CHCOOH\] using                                               [NCERT 1978]
  A)
                  Alkaline \[KMn{{O}_{4}}\]            done clear
  B)
                  Selenium dioxide done clear
  C)
                  Ammoniacal \[AgN{{O}_{3}}\]    done clear
  D)
                  All of these done clear
  View Solution play_arrow

• question_answer47)
  Which of the following does not turn Schiff's reagent to pink [DPMT 1981; CPMT 1989]
  A)
                  Formaldehyde  done clear
  B)
                  Benzaldehyde done clear
  C)
                  Acetone               done clear
  D)
                  Acetaldehyde done clear
  View Solution play_arrow

• question_answer48)
  Fehling's test is positive for         [KCET 1993]
  A)
                  Acetaldehyde                           done clear
  B)
                  Benzaldehyde done clear
  C)
                  Ether     done clear
  D)
                  Alcohol done clear
  View Solution play_arrow

• question_answer49)
  Acetaldehyde and acetone differ in their reaction with [KCET 1989]
  A)
                  Sodium bisulphite done clear
  B)
                  Ammonia done clear
  C)
                  Phosphorus pentachloride done clear
  D)
                  Phenyl hydrazine done clear
  View Solution play_arrow

• question_answer50)
  The final product formed when acetaldehyde is reduced with sodium and alcohol is        [BHU 1976]
  A)
                  Ethylene              done clear
  B)
                  Ethyl alcohol done clear
  C)
                  Ethene done clear
  D)
                  All of these done clear
  View Solution play_arrow

• question_answer51)
  The compound obtained by the reduction of propionaldehyde by amalgamated zinc and concentrated HCl is                                      [MP PMT 1983]
  A)
                  Propanol              done clear
  B)
                  Propane done clear
  C)
                  Propene              done clear
  D)
                  All of these done clear
  View Solution play_arrow

• question_answer52)
  Formaldehyde when treated with KOH gives methanol and potassium formate. The reaction is known as [MP PET 1997]
  A)
                  Perkin reaction done clear
  B)
                  Claisen reaction done clear
  C)
                  Cannizzaro reaction        done clear
  D)
                  Knoevenagel reaction done clear
  View Solution play_arrow

• question_answer53)
  Aldehydes and ketones give addition reaction with [KCET 1992]
  A)
                  Hydrazine            done clear
  B)
                  Phenyl hydrazine done clear
  C)
                  Semicarbazide   done clear
  D)
                  Hydrogen cyanide done clear
  E)
                  All of these done clear
  View Solution play_arrow

• question_answer54)
  Acetaldehyde reacts with            [CBSE PMT 1991]
  A)
                  Electrophiles only done clear
  B)
                  Nucleophiles only done clear
  C)
                  Free radicals only done clear
  D)
                  Both electrophiles and nucleophiles done clear
  View Solution play_arrow

• question_answer55)
  The typical reactions of aldehyde is         [Pb. CET 1986]
  A)
                  Electrophilic addition      done clear
  B)
                  Nucleophilic substitution done clear
  C)
                  Nucleophilic addition      done clear
  D)
                  Nucleophilic elimination done clear
  View Solution play_arrow

• question_answer56)
  Which will not give acetamide on reaction with ammonia [CPMT 1985]
  A)
                  Acetic acid           done clear
  B)
                  Acetyl chloride done clear
  C)
                  Acetic anhydride              done clear
  D)
                  Methyl formate done clear
  View Solution play_arrow

• question_answer57)
  The addition of \[HCN\] to carbonyl compounds is an example of             [Haryana CEET 2000]
  A)
                  Nucleophilic substitution done clear
  B)
                  Electrophilic addition done clear
  C)
                  Nucleophilic addition done clear
  D)
                  Electrophilic substitution done clear
  View Solution play_arrow

• question_answer58)
  Which of the following reagents is used to distinguish acetone and acetophenone           [RPMT 2002; KCET 1998]
  A)
                  \[NaHS{{O}_{3}}\]           done clear
  B)
                  Grignard reagent done clear
  C)
                  \[N{{a}_{2}}S{{O}_{4}}\]               done clear
  D)
                  \[N{{H}_{4}}Cl\] done clear
  View Solution play_arrow

• question_answer59)
  The product formed by the reaction of chlorine with benzaldehyde in the absence of a catalyst is [Tamil Nadu CET 2002]
  A)
                  Chlorobenzene done clear
  B)
                  Benzyl chloride done clear
  C)
                  Benzoyl Chloride              done clear
  D)
                  o-Chlorobenzaldehyde done clear
  View Solution play_arrow

• question_answer60)
  Which of the following compound is resistant to nucleophilic attack by hydroxyl ions [CBSE PMT 1998; KCET (Med.) 2001; AFMC 2001]
  A)
                  Methyl acetate        done clear
  B)
                  Acetonitrile done clear
  C)
                  Dimethyl ether done clear
  D)
                  Acetamide done clear
  View Solution play_arrow

• question_answer61)
  Glucose molecule reacts with X number of molecules of phenylhydrazine to yield osazone. The value of X is [CBSE PMT 1998]
  A)
                  One         done clear
  B)
                  Two done clear
  C)
                  Three    done clear
  D)
                  Four done clear
  View Solution play_arrow

• question_answer62)
  In which of the following reactions aromatic aldehyde is treated with acid anhydride in presence of corresponding salt of the acid to give unsaturated aromatic acid [BHU 1998, KCET (Med.) 2001]
  A)
                  Friedel-Craft's reaction  done clear
  B)
                  Perkin reaction              done clear
  C)
                  Wurtz reaction  done clear
  D)
                  None of these done clear
  View Solution play_arrow

• question_answer63)
  \[2C{{H}_{3}}-\underset{\underset{O}{\mathop{||}}\,}{\mathop{C}}\,-C{{H}_{3}}\underset{{{H}^{+}}}{\mathop{\xrightarrow{Mg/Hg}}}\,\] Product, product in the reaction is [RPMT 2003]
  A)
                  \[{{H}_{3}}C\ \ -\overset{\overset{C{{H}_{3}}}{\mathop{|\ \ \ \ \,\,}}\,}{\mathop{\underset{\underset{OH}{\mathop{\ |\ \,\ \ \ }}\,\ }{\mathop{C\ -}}\,}}\,\overset{\overset{C{{H}_{3}}}{\mathop{|\,\,\,\ \ \ \ \ }}\,\,\,\,\,\,\,\,\,\,}{\mathop{\underset{\underset{OH\,\,}{\mathop{|\,\,\,\ \ \ \ }}\,}{\mathop{C-C}}\,{{H}_{3}}}}\,\]    done clear
  B)
                  \[C{{H}_{3}}-\underset{\underset{O}{\mathop{||}}\,}{\mathop{C}}\,-O-\underset{\underset{O}{\mathop{||}}\,}{\mathop{C}}\,-C{{H}_{3}}\] done clear
  C)
                  \[C{{H}_{3}}-\underset{\underset{OH}{\mathop{|\ \ \ }}\,}{\mathop{CH}}\,-\underset{\underset{OH}{\mathop{|\ \ \ }}\,}{\mathop{CH}}\,-C{{H}_{3}}\]      done clear
  D)
                  None of these done clear
  View Solution play_arrow

• question_answer64)
  Cinnamic acid is formed when \[{{C}_{6}}{{H}_{5}}-CHO\] condenses with \[{{(C{{H}_{3}}CO)}_{2}}O\] in presence of     [Orissa JEE 2003]
  A)
                  Conc. \[{{H}_{2}}S{{O}_{4}}\]      done clear
  B)
                  Sodium acetate done clear
  C)
                  Sodium metal    done clear
  D)
                  Anhydrous \[ZnC{{l}_{2}}\] done clear
  View Solution play_arrow

• question_answer65)
  A mixture of benzaldehyde and formaldehyde on heating with aqueous \[NaOH\] solution gives [IIT-JEE (Screening) 2001]
  A)
                  Benzyl alcohol and sodium formate done clear
  B)
                  Sodium benzoate and methyl alcohol done clear
  C)
                  Sodium benzoate and sodium formate done clear
  D)
                  Benzyl alcohol and methyl alcohol done clear
  View Solution play_arrow

• question_answer66)
  The reaction, \[C{{H}_{3}}-\overset{\overset{O}{\mathop{||}}\,}{\mathop{C}}\,-OC{{H}_{3}}+{{C}_{2}}{{H}_{5}}OH\xrightarrow{{{H}^{+}}\ or\ O{{H}^{-}}}\]                 \[C{{H}_{3}}-\overset{\overset{O}{\mathop{||}}\,}{\mathop{C}}\,-O{{C}_{2}}{{H}_{5}}+\ C{{H}_{3}}OH\] is called [MP PMT 2003]
  A)
  Perkin's reaction              done clear
  B)
  Claisen Schmidt reaction               done clear
  C)
  Esterification      done clear
  D)
  Trans-esterification done clear
  View Solution play_arrow

• question_answer67)
  Formaldehyde reacts with ammonia to give urotropine. The formula of urotropine is      [MP PMT 1989, 96, 2003; AIIMS 1982; NCERT 1987; MP PET 1990, 91, 2000; CPMT 1978, 82, 86, 97; KCET 2003]
  A)
                  \[{{(C{{H}_{2}})}_{6}}{{N}_{4}}\] done clear
  B)
                  \[{{(C{{H}_{2}})}_{4}}{{N}_{3}}\] done clear
  C)
                  \[{{(C{{H}_{2}})}_{6}}{{N}_{6}}\]               done clear
  D)
                  \[{{(C{{H}_{2}})}_{3}}{{N}_{3}}\] done clear
  View Solution play_arrow

• question_answer68)
  Aldol condensation will not take place in [CBSE PMT 1996, 99; RPMT 1999; CPMT 1988, 04]
  A)
                  HCHO    done clear
  B)
                  \[C{{H}_{3}}C{{H}_{2}}CHO\] done clear
  C)
                  \[C{{H}_{3}}CHO\]           done clear
  D)
                  \[C{{H}_{3}}COC{{H}_{3}}\] done clear
  View Solution play_arrow

• question_answer69)
  Contents of three bottles were found to react (i)            Neither with Fehling's solution nor with Tollen's reagent (ii)           Only with Tollen's reagent but not with Fehling's solution (iii)          With both Tollen's reagent and Fehling's solution. If they contained either ethanal (acetaldehyde) or propanone (acetone) or benzal (benzaldehyde), which bottle contained which
  A)
                  In (i) benzal, in (ii) ethanal and in (iii) propanone done clear
  B)
                  In (i) benzal, in (ii) propanone and in (iii) ethanal done clear
  C)
                  In (i) propanone, in (ii) benzal and in (iii) ethanol done clear
  D)
                  In (i) propanone, in (ii) ethanal and in (iii) benzal done clear
  View Solution play_arrow

• question_answer70)
  Action of hydrazine on aldehydes and ketones gives compound of the general structure
  A)
                  \[>C=N-N{{H}_{2}}\] done clear
  B)
                  \[>C=N-OH\] done clear
  C)
                  \[>C=N-NH-CON{{H}_{2}}\] done clear
  D)
                  \[>C=N-NH-{{C}_{6}}{{H}_{5}}\] done clear
  View Solution play_arrow

• question_answer71)
  The reaction in which sodium cyanide is used [MP PET/PMT 1998]
  A)
                  Perkin reaction done clear
  B)
                  Reimer-Tiemann reaction done clear
  C)
                  Benzoin condensation   done clear
  D)
                  Rosenmund reaction done clear
  View Solution play_arrow

• question_answer72)
  Which one of the following reactions is a method for the conversion of a ketone into a hydrocarbon [MP PET/PMT 1998; CBSE PMT 1989]
  A)
                  Aldol condensation         done clear
  B)
                  Reimer-Tiemann reaction done clear
  C)
                  Cannizzaro reaction        done clear
  D)
                  Wolf-Kishner reduction done clear
  View Solution play_arrow

• question_answer73)
  Bakelite is a polymer of [DPMT 1996; MP PET 2002]
  A)
                  \[HCHO+\]phenol done clear
  B)
                  \[HCHO+\]aldehyde (acetaldehyde) done clear
  C)
                  Phenol\[+{{H}_{2}}S{{O}_{4}}\] done clear
  D)
                  \[HCHO+\]acetone done clear
  View Solution play_arrow

• question_answer74)
  Clemmenson reduction involves \[>C=O\] to \[>C{{H}_{2}}\] in presence of                                        [DPMT 1996]
  A)
                  Zn / Hg done clear
  B)
                  Alcohol done clear
  C)
                  Zn dust done clear
  D)
                  Zn / alcohol done clear
  View Solution play_arrow

• question_answer75)
  Aldol condensation involving \[C{{H}_{3}}CHO+C{{H}_{3}}CHO\] gives the product           [DPMT 1996]
  A)
                  \[C{{H}_{3}}CHOHC{{H}_{2}}CHO\]          done clear
  B)
                  \[C{{H}_{3}}COC{{H}_{2}}C{{H}_{3}}\] done clear
  C)
                  \[C{{H}_{3}}CH=C{{H}_{2}}\]       done clear
  D)
                  None of these done clear
  View Solution play_arrow

• question_answer76)
  Enol content is highest in                                              [Orissa JEE 2005]
  A)
                  Acetone               done clear
  B)
                  Acetophenone done clear
  C)
                  Acetic acid           done clear
  D)
                  Acetyl acetone done clear
  View Solution play_arrow

• question_answer77)
  Which one of the following reacts with HCN and Tollen's reagent, but is not oxidised by Fehling's solution
  A)
                  Methanal            done clear
  B)
                  Ethanal done clear
  C)
                  Benzaldehyde   done clear
  D)
                  Acetone done clear
  View Solution play_arrow

• question_answer78)
  During reaction of benzaldehyde with alkali one of the product is
  A)
                  Phenol  done clear
  B)
                  Benzyl alcohol done clear
  C)
                  Benzene              done clear
  D)
                  Benzophenone done clear
  View Solution play_arrow

• question_answer79)
  Cannizzaro reaction is given by  [DPMT 1996]
  A)
                  HCHO    done clear
  B)
                  \[C{{H}_{3}}COC{{H}_{3}}\] done clear
  C)
                  \[C{{H}_{3}}CHO\]           done clear
  D)
                  \[C{{H}_{3}}C{{H}_{2}}OH\] done clear
  View Solution play_arrow

• question_answer80)
  The reaction                 \[{{C}_{6}}{{H}_{5}}CHO+C{{H}_{3}}CHO\to {{C}_{6}}{{H}_{5}}CH=CH-CHO\]                 is known as                                         [BHU 1996]
  A)
                  Perkin's reaction              done clear
  B)
                  Claisen condensation done clear
  C)
                  Benzoin condensation   done clear
  D)
                  Cannizzaro's reaction done clear
  View Solution play_arrow

• question_answer81)
  When two molecules of acetaldehyde condense in the presence of dilute alkali, it forms              [Bihar MEE 1996]
  A)
                  Acetal   done clear
  B)
                  Sodium formate done clear
  C)
                  Aldol      done clear
  D)
                  Mesitylene done clear
  E)
                  None of these done clear
  View Solution play_arrow

• question_answer82)
  Acetaldehyde on treatment with dil. NaOH followed by heating gives                                    [CET Pune 1998]
  A)
                  \[C{{H}_{3}}C{{H}_{2}}C{{H}_{2}}C{{H}_{2}}OH\]                done clear
  B)
                  \[C{{H}_{3}}C{{H}_{2}}C{{H}_{2}}CHO\] done clear
  C)
                  \[C{{H}_{3}}-CH=CHCHO\]           done clear
  D)
                  \[C{{H}_{3}}-CH=CHC{{H}_{2}}OH\] done clear
  View Solution play_arrow

• question_answer83)
  Reaction \[\begin{matrix}    R  \\    R  \\ \end{matrix}>CO+HCN\to R-\underset{\underset{CN}{\mathop{|}}\,}{\mathop{\overset{\overset{R}{\mathop{|}}\,}{\mathop{C}}\,}}\,-OH\] is [Kurukshetra CEE 1998; IIT 1990]
  A)
                  Electrophilic substitution done clear
  B)
                  Electrophilic addition done clear
  C)
                  Nucleophilic addition done clear
  D)
                  Nucleophilic substitution done clear
  View Solution play_arrow

• question_answer84)
  Benzaldehyde on reaction with acetophenone in the presence of sodium hydroxide solution gives          [BVP 2003]
  A)
                  \[{{C}_{6}}{{H}_{5}}CH=CHCO{{C}_{6}}{{H}_{5}}\] done clear
  B)
                  \[{{C}_{6}}{{H}_{5}}COC{{H}_{2}}{{C}_{6}}{{H}_{5}}\] done clear
  C)
                  \[{{C}_{6}}{{H}_{5}}CH=CH{{C}_{6}}{{H}_{5}}\] done clear
  D)
                  \[{{C}_{6}}{{H}_{5}}CH(OH)CO{{C}_{6}}{{H}_{5}}\] done clear
  View Solution play_arrow

• question_answer85)
  Aldehydes and ketones can be reduced to hydrocarbon by using                                              [Orissa JEE 2003]
  A)
                  \[LiAl{{H}_{4}}\]                done clear
  B)
                  \[{{H}_{2}}/Pd-BaS{{O}_{4}}\] done clear
  C)
                  \[Na-Hg/HCl\]   done clear
  D)
                  \[N{{H}_{2}}-N{{H}_{2}}/{{C}_{2}}{{H}_{5}}ONa\] done clear
  View Solution play_arrow

• question_answer86)
  An important reaction of acetone is autocondensation in presence of concentrated sulphuric acid to give the aromatic compound [KCET 2003; MP PET 1986, 89; MP PMT 1992, 2000]
  A)
                  Mesitylene         done clear
  B)
                  Mesityl oxide done clear
  C)
                  Trioxan done clear
  D)
                  Phorone done clear
  View Solution play_arrow

• question_answer87)
  Identify the organic compound which, on heating with strong solution of \[NaOH\], partly converted into an acid salt and partly into alcohol            [KCET 2003]
  A)
                  Benzyl alcohol   done clear
  B)
                  Acetaldehyde done clear
  C)
                  Acetone               done clear
  D)
                  Benzaldehyde done clear
  View Solution play_arrow

• question_answer88)
  Which of the following does not give brick red precipitate with Fehling solution [AIIMS 1996]
  A)
                  Acetone               done clear
  B)
                  Acetaldehyde done clear
  C)
                  Formalin              done clear
  D)
                  D-glucose done clear
  View Solution play_arrow

• question_answer89)
  Acetaldehyde and acetone can be distinguished by [AIIMS 1996; DCE 1999; Pb. CET 2000]
  A)
                  Molisch test       done clear
  B)
                  Bromoform test done clear
  C)
                  Solubility in water            done clear
  D)
                  Tollen's test done clear
  View Solution play_arrow

• question_answer90)
  Which compound is soluble in \[{{H}_{2}}O\]      [RPMT 1997]
  A)
                  HCHO    done clear
  B)
                  \[C{{H}_{3}}CHO\] done clear
  C)
                  \[C{{H}_{3}}COC{{H}_{3}}\]         done clear
  D)
                  All done clear
  View Solution play_arrow

• question_answer91)
  \[C{{H}_{3}}CHO+C{{H}_{3}}MgBr\to \text{Product}\xrightarrow{{{H}_{2}}O}A\]                 What is A?                                           [RPMT 1997]
  A)
                  Primary alcohol done clear
  B)
                  Secondary alcohol done clear
  C)
                  Tertiary alcohol done clear
  D)
                  Ketone done clear
  View Solution play_arrow

• question_answer92)
  Which gives lactic acid on hydrolysis after reacting with HCN        [UPSEAT 2003; MP PMT 2003]
  A)
                  \[HCHO\]             done clear
  B)
                  \[C{{H}_{3}}CHO\] done clear
  C)
                  \[{{C}_{6}}{{H}_{5}}CHO\]            done clear
  D)
                  \[C{{H}_{3}}COC{{H}_{3}}\] done clear
  View Solution play_arrow

• question_answer93)
  \[C{{H}_{3}}CHO\] react with aqueous NaOH solution to form [MP PMT 1992]
  A)
                  3-hydroxy butanal           done clear
  B)
                  2-hydroxy butanal done clear
  C)
                  4-hydroxy butanal           done clear
  D)
                  3-hydroxy butanol done clear
  View Solution play_arrow

• question_answer94)
  Fehling solution react with HCHO to form precipitate of [MP PMT 1992]
  A)
                  White colour      done clear
  B)
                  Yellow colour done clear
  C)
                  Red colour          done clear
  D)
                  Blue colour done clear
  View Solution play_arrow

• question_answer95)
  Product in following reaction is                 \[C{{H}_{3}}MgI+HCHO\to \]Product [RPMT 2003; BHU 1998, 2005; DCE 1999]
  A)
                  \[C{{H}_{3}}CHO\]           done clear
  B)
                  \[C{{H}_{3}}OH\] done clear
  C)
                  \[{{C}_{2}}{{H}_{5}}OH\]               done clear
  D)
                  \[C{{H}_{3}}-O-C{{H}_{3}}\] done clear
  View Solution play_arrow

• question_answer96)
  \[A\underset{{{800}^{o}}C}{\mathop{\xrightarrow{\Delta }}}\,C{{H}_{2}}=C=O\], Reactant ?A? in the reaction is [RPMT 2003]
  A)
                  \[C{{H}_{3}}C{{H}_{2}}CHO\]      done clear
  B)
                  \[C{{H}_{3}}CHO\] done clear
  C)
                  \[C{{H}_{3}}-\underset{\underset{O}{\mathop{||}}\,}{\mathop{C}}\,-C{{H}_{3}}\]         done clear
  D)
                  \[{{C}_{2}}{{H}_{5}}OH\] done clear
  View Solution play_arrow

• question_answer97)
  Only an aldehyde having..... can undergo the aldol condensation                                              [KCET 1998]
  A)
                  At least one beta H atom              done clear
  B)
                  At least one alpha H atom done clear
  C)
                  An aromatic ring done clear
  D)
                  No alpha H atom done clear
  View Solution play_arrow

• question_answer98)
  Clemenson's reduction of ketones is carried out in [BHU 2000]
  A)
  \[{{H}_{2}}\] with Pd catalyst      done clear
  B)
  Glycol with \[KOH\] done clear
  C)
  \[LiAl{{H}_{4}}\] in water              done clear
  D)
  \[Zn-Hg\] with \[HCl\] done clear
  View Solution play_arrow

• question_answer99)
  Reaction \[\begin{matrix}    R  \\    R  \\ \end{matrix}>C=O\underset{KOH/\text{glycol}}{\mathop{\xrightarrow{{{H}_{2}}NN{{H}_{2}}}}}\,\begin{matrix}    R  \\    R  \\ \end{matrix}>C<\begin{matrix}    H  \\    H  \\ \end{matrix}+{{N}_{2}}+{{H}_{2}}\] is called [MP PET 2003]
  A)
                  Wolff?Kishner reaction done clear
  B)
                  Tischenko reaction done clear
  C)
                  Reformatsky reaction    done clear
  D)
                  Gattermann reaction done clear
  View Solution play_arrow

• question_answer100)
  Propanal on treatment with dilute sodium hydroxide forms [Kerala CET 2000]
  A)
                  \[C{{H}_{3}}C{{H}_{2}}C{{H}_{2}}C{{H}_{2}}C{{H}_{2}}CHO\] done clear
  B)
                  \[C{{H}_{3}}C{{H}_{2}}CH(OH)C{{H}_{2}}C{{H}_{2}}CHO\] done clear
  C)
                  \[C{{H}_{3}}C{{H}_{2}}CH(OH)CH(C{{H}_{3}})CHO\] done clear
  D)
                  \[C{{H}_{3}}C{{H}_{2}}COONa\] done clear
  View Solution play_arrow

• question_answer101)
  Identify the product \[Y\] in the sequence \[C{{H}_{3}}CHO+C{{H}_{3}}Mgl\xrightarrow{\text{Ether}}X\xrightarrow{{{H}_{2}}O/{{H}^{+}}}Y\] [Kerala (Med.) 2001]
  A)
                  \[C{{H}_{3}}OH\]              done clear
  B)
                  \[C{{H}_{3}}C{{H}_{2}}OH\] done clear
  C)
                  \[{{(C{{H}_{3}})}_{2}}CHOH\]      done clear
  D)
                  \[{{(C{{H}_{3}})}_{3}}COH\] done clear
  View Solution play_arrow

• question_answer102)
  What is the name of reaction when benzaldehyde changes into benzyl alcohol  [CPMT 1996; RPET 1999]
  A)
                  Friedel-Craft's reaction  done clear
  B)
                  Kolbe's reaction done clear
  C)
                  Wurtz reaction  done clear
  D)
                  Cannizzaro reaction done clear
  View Solution play_arrow

• question_answer103)
  The reagent that gives an orange coloured precipitate with acetaldehyde [EAMCET 1997; Pb. PMT 2004; AIIMS 1987]
  A)
                  \[N{{H}_{2}}OH\]             done clear
  B)
                  \[NaHS{{O}_{3}}\] done clear
  C)
                  Iodine   done clear
  D)
                  2, 4-DNP done clear
  View Solution play_arrow

• question_answer104)
  Which one is used in the manufacture of mirror [MP PET 1992]
  A)
                  Red lead (litharge) done clear
  B)
                  Ammoniacal \[AgN{{O}_{3}}\] done clear
  C)
                  Ammoniacal \[AgN{{O}_{3}}+\] Red lead done clear
  D)
                  Ammoniacal \[AgN{{O}_{3}}+HCHO\] done clear
  View Solution play_arrow

• question_answer105)
  When \[C{{H}_{3}}COC{{H}_{3}}\] reacts with \[C{{l}_{2}}\] and NaOH, which of the following is formed                [CPMT 1996]
  A)
                  \[CHC{{l}_{3}}\]                done clear
  B)
                  \[CC{{l}_{4}}\] done clear
  C)
                  \[CC{{l}_{2}}{{H}_{2}}\] done clear
  D)
                  \[C{{H}_{3}}Cl\] done clear
  View Solution play_arrow

• question_answer106)
  Which gives difference between aldehyde and ketone [CPMT 1994]
  A)
                  Fehling's solution             done clear
  B)
                  Tollen's reagent done clear
  C)
                  Schiff's reagent done clear
  D)
                  Benedict's solution done clear
  E)
                  All of these done clear
  View Solution play_arrow

• question_answer107)
  Aldehyde turns pink with             [Bihar MEE 1997]
  A)
                  Benedict solution             done clear
  B)
                  Schiff reagent done clear
  C)
                  Fehling solution                done clear
  D)
                  Tollen's reagent done clear
  E)
                  Mollisch reagent done clear
  View Solution play_arrow

• question_answer108)
  Which of the following would undergo aldol condensation [MP PMT 1986; BHU 1995]
  A)
                  \[CC{{l}_{3}}.CHO\]         done clear
  B)
                  \[C{{H}_{3}}-\underset{\underset{C{{H}_{3}}}{\mathop{|\,\,\,\,\,\,\,}}\,}{\mathop{\overset{\overset{C{{H}_{3}}}{\mathop{|\,\,\,\,\,\,\,}}\,}{\mathop{C\,\,-}}\,}}\,CHO\] done clear
  C)
                  \[C{{H}_{3}}.C{{H}_{2}}.CHO\]    done clear
  D)
                  HCHO done clear
  View Solution play_arrow

• question_answer109)
  The reaction of acetaldehyde with conc. \[KMn{{O}_{4}}\] gives [DPMT 1982; AIIMS 1996]
  A)
                  \[C{{H}_{3}}COOH\]        done clear
  B)
                  \[C{{H}_{3}}C{{H}_{2}}OH\] done clear
  C)
                  HCHO    done clear
  D)
                  \[C{{H}_{3}}OH\] done clear
  View Solution play_arrow

• question_answer110)
  When acetaldehyde is heated with Tollen's reagent, following is obtained            [CPMT 1989; MP PET/PMT 1988]
  A)
                  Methyl alcohol  done clear
  B)
                  Silver acetate done clear
  C)
                  Silver mirror       done clear
  D)
                  Formaldehyde done clear
  View Solution play_arrow

• question_answer111)
  Boiling point of acetone is            [CPMT 1975, 89]
  A)
                  \[{{56}^{o}}C\]  done clear
  B)
                  \[{{60}^{o}}C\] done clear
  C)
                  \[{{100}^{o}}C\]                done clear
  D)
                  \[{{90}^{o}}C\] done clear
  View Solution play_arrow

• question_answer112)
  Urotropine  is
  A)
                  Hexamethylene tetramine done clear
  B)
                  Hexaethylene tetramine done clear
  C)
                  Hexamethylene diamine done clear
  D)
                  None of these done clear
  View Solution play_arrow

• question_answer113)
  Magenta is          [DPMT 1982; Kurukshetra CEE 1998]
  A)
                  Alkaline phenolphthalein done clear
  B)
                  Methyl red done clear
  C)
                  p-rosaniline hydrochloride done clear
  D)
                  Red litmus done clear
  View Solution play_arrow

• question_answer114)
  An aldehyde on oxidation gives [CPMT 1973, 03; DPMT 1983; Manipal MEE 1995]
  A)
                  An alcohol           done clear
  B)
                  An acid done clear
  C)
                  A ketone             done clear
  D)
                  An ether done clear
  View Solution play_arrow

• question_answer115)
  The reaction of an aldehyde with hydroxylamine gives a product which is called [MP PET 1993; AFMC 2002]
  A)
                  Aminohydroxide              done clear
  B)
                  Hydrazone done clear
  C)
                  Semicarbazone done clear
  D)
                  Oxime done clear
  View Solution play_arrow

• question_answer116)
  Cannizzaro reaction is not shown by [BHU 1980; IIT 1983; KCET 1993; Bihar MEE 1995; RPMT 1997, 2000, 02]
  A)
                  HCHO    done clear
  B)
                  \[{{C}_{6}}{{H}_{5}}CHO\] done clear
  C)
                  \[C{{H}_{3}}CHO\]           done clear
  D)
                  All of these done clear
  View Solution play_arrow

• question_answer117)
  When acetone is heated with hydroxylamine, the compound formed is                                                [MP PMT 1993]
  A)
                  Cyanohydrin      done clear
  B)
                  Oxime done clear
  C)
                  Semicarbazone done clear
  D)
                  Hydrazone done clear
  View Solution play_arrow

• question_answer118)
  The product of the reaction between ammonia and formaldehyde is                                      [MP PMT 1993]
  A)
                  Urotropine         done clear
  B)
                  Formamide done clear
  C)
                  Paraformaldehyde          done clear
  D)
                  Methanol done clear
  View Solution play_arrow

• question_answer119)
  Which of the following products is obtained by the oxidation of propionaldehyde             [CPMT 1989]
  A)
                  Acetic acid done clear
  B)
                  Formic acid and acetic acid done clear
  C)
                  Propanoic acid done clear
  D)
                  n-propyl alcohol done clear
  View Solution play_arrow

• question_answer120)
  When acetaldehyde reacts with \[PC{{l}_{5}},\] the resulting compound is                                           [MP PMT 1992, 93]
  A)
                  Ethyl chloride     done clear
  B)
                  Ethylene chloride done clear
  C)
                  Ethylidene chloride         done clear
  D)
                  Trichloro acetaldehyde done clear
  View Solution play_arrow

• question_answer121)
  Benzaldehyde and acetaldehyde can be differentiated by
  A)
                  HCN       done clear
  B)
                  \[N{{H}_{2}}OH\] done clear
  C)
                  Hydrazine            done clear
  D)
                  NaOH solution done clear
  View Solution play_arrow

• question_answer122)
  In the presence of a dilute base \[{{C}_{6}}{{H}_{5}}CHO\] and \[C{{H}_{3}}CHO\] react together to give a product. The product is [MP PET 1994]
  A)
                  \[{{C}_{6}}{{H}_{5}}C{{H}_{3}}\]                done clear
  B)
                  \[{{C}_{6}}{{H}_{5}}C{{H}_{2}}C{{H}_{2}}OH\] done clear
  C)
                  \[{{C}_{6}}{{H}_{5}}C{{H}_{2}}OH\]          done clear
  D)
                  \[{{C}_{6}}{{H}_{5}}CH=CHCHO\] done clear
  View Solution play_arrow

• question_answer123)
  Grignard's reagent reacts with ethanal (acetaldehyde) and propanone to give
  A)
                  Higher aldehydes with ethanal and higher ketones with propanone done clear
  B)
                  Primary alcohols with ethanal and secondary alcohols with propanone done clear
  C)
                  Ethers with ethanal and alcohols with propanone done clear
  D)
                  Secondary alcohols with ethanal and tertiary alcohols with propanone done clear
  View Solution play_arrow

• question_answer124)
  Base catalysed aldol condensation occurs with [IIT-JEE 1991]
  A)
                  Benzaldehyde done clear
  B)
                  2, 2-dimethyl propionaldehyde done clear
  C)
                  Acetaldehyde done clear
  D)
                  Formaldehyde done clear
  View Solution play_arrow

• question_answer125)
  Benzaldehyde reacts with ammonia to form [CPMT 1989; AFMC 1998]
  A)
                  Benzaldehyde ammonia done clear
  B)
                  Urotropine done clear
  C)
                  Hydrobenzamide done clear
  D)
                  Aniline done clear
  View Solution play_arrow

• question_answer126)
  Glucose + Tollen's reagent \[\to \] Silver mirror shows [CPMT 1997]
  A)
                  Presence of acidic group done clear
  B)
                  Presence of alkaline group done clear
  C)
                  Presence of ketonic group done clear
  D)
                  Presence of aldehyde group done clear
  View Solution play_arrow

• question_answer127)
  Fehling solution is                                            [MP PMT 1989]
  A)
                  Ammoniacal cuprous chloride solution done clear
  B)
                  Acidified copper sulphate solution done clear
  C)
                  Copper sulphate and sodium hydroxide + Rochelle salt done clear
  D)
                  None of these done clear
  View Solution play_arrow

• question_answer128)
  Reduction of an aldehyde produces [MP PMT 1994; MP PET 2001]
  A)
                  Primary alcohol done clear
  B)
                  Monocarboxylic acid done clear
  C)
                  Secondary alcohol           done clear
  D)
                  Tertiary alcohol done clear
  View Solution play_arrow

• question_answer129)
  Which of the following on reaction with conc. NaOH gives an alcohol                                       [MP PET 1996]
  A)
                  Methanal            done clear
  B)
                  Ethanal done clear
  C)
                  Propanal              done clear
  D)
                  Butanal done clear
  View Solution play_arrow

• question_answer130)
  Schiff's reagent is                                             [MP PMT 1989]
  A)
                  Magenta colour solution decolourised with sulphurous acid done clear
  B)
                  Ammoniacal cobalt chloride solution done clear
  C)
                  Ammoniacal manganese sulphate solution done clear
  D)
                  Magenta solution decolourised with chlorine done clear
  View Solution play_arrow

• question_answer131)
  Pyrolysis of acetone gives \[C{{H}_{2}}=C=O\] called
  A)
                  Methylene oxide done clear
  B)
                  Methyl carbon monoxide done clear
  C)
                  Ketene done clear
  D)
                  Methone done clear
  View Solution play_arrow

• question_answer132)
  Which one of the following on oxidation will not give a carboxylic acid with the same number of carbon atoms [CBSE PMT 1992; MP PET 1996]
  A)
                  \[C{{H}_{3}}COC{{H}_{3}}\]         done clear
  B)
                  \[CC{{l}_{3}}C{{H}_{2}}CHO\] done clear
  C)
                  \[C{{H}_{3}}C{{H}_{2}}C{{H}_{2}}OH\]    done clear
  D)
                  \[C{{H}_{3}}C{{H}_{2}}CHO\] done clear
  View Solution play_arrow

• question_answer133)
  Acetal is obtained by reacting in the presence of dry HCl and alcohol with                                             [MP PET 1996]
  A)
                  Aldehyde            done clear
  B)
                  Ketone done clear
  C)
                  Ether     done clear
  D)
                  Carboxylic acid done clear
  View Solution play_arrow

• question_answer134)
  The reagent with which both aldehyde and acetone react easily is            [CPMT 1973, 74, 89; BIT 1992]
  A)
                  Fehling's reagent             done clear
  B)
                  Grignard reagent done clear
  C)
                  Schiff's reagent done clear
  D)
                  Tollen's reagent done clear
  View Solution play_arrow

• question_answer135)
  Phenylmethanol can be prepared by reducing the benzaldehyde with                                   [CBSE PMT 1997]
  A)
                  \[C{{H}_{3}}Br\]                done clear
  B)
                  Zn and HCl done clear
  C)
                  \[C{{H}_{3}}Br\] and Na                done clear
  D)
                  \[C{{H}_{3}}I\] and \[Mg\] done clear
  View Solution play_arrow

• question_answer136)
  Which of the following is used in the manufacture of thermosetting plastics
  A)
                  Formaldehyde done clear
  B)
                  Acetaldehyde done clear
  C)
                  Acetone               done clear
  D)
                  Benzaldehyde done clear
  View Solution play_arrow

• question_answer137)
  Which compound undergoes iodoform reaction [DPMT 1984; CPMT 1989]
  A)
                  HCHO    done clear
  B)
                  \[C{{H}_{3}}CHO\] done clear
  C)
                  \[C{{H}_{3}}OH\]              done clear
  D)
                  \[C{{H}_{3}}COOH\] done clear
  View Solution play_arrow

• question_answer138)
  Which does not react with Fehling solution          [MNR 1983, 93]
  A)
                  Acetaldehyde    done clear
  B)
                  Benzaldehyde done clear
  C)
                  Glucose                done clear
  D)
                  Formic acid done clear
  View Solution play_arrow

• question_answer139)
  Which of the following compound will react with ethanolic KCN                                 [IIT-JEE 1984]
  A)
                  Ethane  done clear
  B)
                  Acetyl chloride done clear
  C)
                  Chlorobenzene done clear
  D)
                  Benzaldehyde done clear
  View Solution play_arrow

• question_answer140)
  Schiff's reagent gives pink colour with [EAMCET 1980; MP PMT 2000]
  A)
                  Aldehydes          done clear
  B)
                  Ethers done clear
  C)
                  Ketones               done clear
  D)
                  Carboxylic acid done clear
  View Solution play_arrow

• question_answer141)
  Acetaldehyde reacts with \[C{{l}_{2}}\] (in excess) to give [MP PMT 1997]
  A)
                  Chloral  done clear
  B)
                  Chloroform done clear
  C)
                  Acetic acid           done clear
  D)
                  Trichloroacetic acid done clear
  View Solution play_arrow

• question_answer142)
  The compound which reacts with Fehling solution is [CPMT 1989]
  A)
                  \[{{C}_{6}}{{H}_{5}}COOH\]         done clear
  B)
                  HCOOH done clear
  C)
                  \[{{C}_{6}}{{H}_{5}}CHO\]            done clear
  D)
                  \[C{{H}_{2}}ClC{{H}_{3}}\] done clear
  View Solution play_arrow

• question_answer143)
  Which one of the following undergoes reaction with 50% sodium hydroxide solution to give the corresponding alcohol and acid                                        [AIEEE 2004]
  A)
                  Butanal done clear
  B)
                  Benzaldehyde done clear
  C)
                  Phenol  done clear
  D)
                  Benzoic acid done clear
  View Solution play_arrow

• question_answer144)
  Which one of the following is reduced with zinc and hydrochloric acid to give the corresponding hydrocarbon [AIEEE 2004]
  A)
                  Acetamide          done clear
  B)
                  Acetic acid done clear
  C)
                  Ethyl acetate      done clear
  D)
                  Butan?2?one done clear
  View Solution play_arrow

• question_answer145)
  Three molecules of acetone in the presence of dry HCl form [MP PET 2004]
  A)
                  Mesitylene         done clear
  B)
                  Phorone done clear
  C)
                  Glyoxal done clear
  D)
                  Mesityl oxide done clear
  View Solution play_arrow

• question_answer146)
  Aldehydes and ketones can be reduced to corresponding hydrocarbons by                                         [Kerala PMT 2004]
  A)
                  Refluxing with water done clear
  B)
                  Refluxing with strong acids done clear
  C)
                  Refluxing with soda amalgam and water done clear
  D)
                  Refluxing with zinc amalgam and concentrated HCl done clear
  E)
                  Passing the vapour under heated \[Pb{{O}_{2}}\] done clear
  View Solution play_arrow

• question_answer147)
  Acetone reacts with iodine to form iodoform in the presence of                                                               [BHU 2004; CPMT 2004]
  A)
                  \[CaC{{O}_{3}}\]               done clear
  B)
                  \[NaOH\] done clear
  C)
                  \[KOH\]                done clear
  D)
                  \[MgC{{O}_{3}}\] done clear
  View Solution play_arrow

• question_answer148)
  Cyanohydrin of which of the following forms lactic acid [MHCET 2003]
  A)
                  \[C{{H}_{3}}C{{H}_{2}}CHO\]      done clear
  B)
                  \[C{{H}_{3}}CHO\] done clear
  C)
                  \[HCHO\]             done clear
  D)
                  \[C{{H}_{3}}COC{{H}_{3}}\] done clear
  View Solution play_arrow

• question_answer149)
  Which of the following is used to detect aldehydes [MHCET 2004]
  A)
                  Million's test done clear
  B)
                  Tollen's reagent done clear
  C)
                  Neutral ferric chloride solution done clear
  D)
                  Molisch's test done clear
  View Solution play_arrow

• question_answer150)
  Which of the following aldehydes give red precipitate with Fehling solution ?                                      [MHCET 2004]
  A)
                  Benzaldehyde   done clear
  B)
                  Salicylaldehyde done clear
  C)
                  Acetaldehyde    done clear
  D)
                  None of these done clear
  View Solution play_arrow

• question_answer151)
  \[A\xrightarrow{{}}{{(C{{H}_{3}})}_{2}}C=CHCOC{{H}_{3}}A\] is                     [MHCET 2004]
  A)
                  Acetone               done clear
  B)
                  Acetaldehyde done clear
  C)
                  Propionaldehyde             done clear
  D)
                  Formaldehyde done clear
  View Solution play_arrow

• question_answer152)
  The aldehyde which react with NaOH to produce an alcohol and sodium salt is                                   [Pb. PMT 2004]
  A)
                          HCHO    done clear
  B)
                  \[C{{H}_{3}}CHO\] done clear
  C)
                          \[C{{H}_{3}}C{{H}_{2}}CHO\]            done clear
  D)
                          \[C{{H}_{3}}C{{H}_{2}}C{{H}_{2}}CHO\] done clear
  View Solution play_arrow

• question_answer153)
  Acetaldehyde and Acetone can be distinguished by [DCE 2003]
  A)
                  Iododorm test done clear
  B)
                  Nitroprusside test done clear
  C)
                  Fehling's solution test done clear
  D)
                  DNP test done clear
  View Solution play_arrow

• question_answer154)
  \[OCH-CHO\xrightarrow{O{{H}^{-}}}HO{{H}_{2}}C-COOH\] The reaction given is                                       [DCE 2003]
  A)
                  Aldol condensation         done clear
  B)
                  Knovengel reaction done clear
  C)
                  Cannizzaro reaction        done clear
  D)
                  None of these done clear
  View Solution play_arrow

• question_answer155)
  The order of susceptibility of nucleophilic attack on aldehydes follows the order                                               [DCE 2002]
  A)
  \[1{}^\circ >3{}^\circ >2{}^\circ ~\]         done clear
  B)
  \[1{}^\circ >2{}^\circ >3{}^\circ ~\] done clear
  C)
  \[3{}^\circ >2{}^\circ >1{}^\circ ~\] done clear
  D)
  \[2{}^\circ >3{}^\circ >1{}^\circ ~\] done clear
  View Solution play_arrow

• question_answer156)
  In Wolf-Kishner reduction, the carbonyl group of aldehydes and ketones is converted into                 [Pb. CET 2000]
  A)
                  \[>C{{H}_{2}}\] group    done clear
  B)
                  \[-C{{H}_{3}}\] group done clear
  C)
                  \[-C{{H}_{2}}OH\]group                done clear
  D)
                  \[>CHOH\] group done clear
  View Solution play_arrow

• question_answer157)
  Which of the following react with \[NaHS{{O}_{3}}\] [Pb. CET 2003]
  A)
                  \[C{{H}_{3}}COC{{H}_{3}}\]         done clear
  B)
                  \[C{{H}_{3}}CHO\] done clear
  C)
                  \[HCHO\]             done clear
  D)
                  All of these done clear
  View Solution play_arrow

• question_answer158)
  Fehling solution is                                            [Pb. CET 2003]
  A)
                          \[CuS{{O}_{4}}\]+ lime                       done clear
  B)
                          \[CuS{{O}_{4}}+NaOH(aq)\] done clear
  C)
                          \[CuS{{O}_{4}}+N{{a}_{2}}C{{O}_{3}}\]                 done clear
  D)
                          None of these done clear
  View Solution play_arrow

• question_answer159)
  Wolf kishner reduction, reduces                               [Pb. CET 2003]
  A)
  \[-COOH\] group              done clear
  B)
  \[-C\equiv C-\] group done clear
  C)
  \[-CHO\] group done clear
  D)
  \[-O-\]group done clear
  View Solution play_arrow

• question_answer160)
  A compound has a vapour density of 29. On warming an aqueous solution of alkali, it gives a yellow precipitate. The compound is                                      [DPMT 2004]
  A)
                  \[C{{H}_{3}}C{{H}_{2}}CHO\]      done clear
  B)
                  \[C{{H}_{3}}CHOHC{{H}_{3}}\] done clear
  C)
                  \[C{{H}_{3}}COC{{H}_{3}}\]         done clear
  D)
                  \[C{{H}_{3}}C{{H}_{2}}COOH\] done clear
  View Solution play_arrow

• question_answer161)
  Which responds to +ve iodoform test?  [Orissa JEE 2004]
  A)
                  Butanol                done clear
  B)
                  Butan-1-al done clear
  C)
                  Butanol-2            done clear
  D)
                  3-pentanone done clear
  View Solution play_arrow

• question_answer162)
  The correct order of reactivity of PhMgBr with [IIT-JEE (Screening) 2004]                 \[\overset{\overset{O}{\mathop{||}}\,}{\mathop{Ph-C-Ph}}\,\]        \[\overset{\overset{\,\,\,\,\,\,O}{\mathop{\,\,\,\,\,\,\,\,\,||}}\,}{\mathop{C{{H}_{3}}-C-H}}\,\]        \[\overset{\overset{\,O}{\mathop{||}}\,}{\mathop{C{{H}_{3}}-C-C{{H}_{3}}}}\,\] is                         (I)                             (II)                           (III)
  A)
                  (I) > (II) > (III)     done clear
  B)
                  (III) > (II) > (I) done clear
  C)
                  (II) > (III) > (I)     done clear
  D)
                  (I) > (III) > (II) done clear
  View Solution play_arrow

• question_answer163)
  The pair of compounds in which both the compounds give positive test with Tollen's reagent is [IIT-JEE (Screening) 2004]
  A)
                  Glucose and Sucrose done clear
  B)
                  Fructose and Sucrose done clear
  C)
                  Acetophenone and Hexanal done clear
  D)
                  Glucose and Fructose done clear
  View Solution play_arrow

• question_answer164)
  The most appropriate reagent to distinguish between acetaldehyde and formaldehyde  is           [UPSEAT 2004]
  A)
                  Fehling's solution done clear
  B)
                  Tollen's reagent done clear
  C)
                  Schiff's reagent done clear
  D)
                  Iodine in presence of base done clear
  View Solution play_arrow

• question_answer165)
  Silver mirror test can be used to distinguish between [MP PET 2004]
  A)
                  Ketone and acid               done clear
  B)
                  Phenol and acid done clear
  C)
                  Aldehyde and acid           done clear
  D)
                  Alcohol and phenol done clear
  View Solution play_arrow

• question_answer166)
  Paraldehyde is [CPMT 1985; MP PET 1992, 96; RPMT 2000]
  A)
                  A trimer of formaldehyde done clear
  B)
                  A trimer of acetaldehyde done clear
  C)
                  A hexamer of formaldehyde done clear
  D)
                  A hexamer of acetaldehyde done clear
  View Solution play_arrow

• question_answer167)
  Paraldehyde is used as a               [CBSE PMT 1989]
  A)
                  Medicine             done clear
  B)
                  Poison done clear
  C)
                  Polymer               done clear
  D)
                  Dye done clear
  View Solution play_arrow

• question_answer168)
  Formalin is an aqueous solution of [BHU 1979; DPMT 1983]
  A)
                  Formic acid         done clear
  B)
                  Formaldehyde done clear
  C)
                  Fluorescein         done clear
  D)
                  Furfur aldehyde done clear
  View Solution play_arrow

• question_answer169)
  Hexamethylene tetramine is used as      [MP PMT 1979, 84]
  A)
                  Analgesic             done clear
  B)
                  Antipyretic done clear
  C)
                  Urinary antiseptic            done clear
  D)
                  All of these done clear
  View Solution play_arrow

• question_answer170)
  Methyl ketone group is identified by      [BCECE 2005]
  A)
                  Iodoform test    done clear
  B)
                  Fehling solution done clear
  C)
                  Tollen?s reagent               done clear
  D)
                  Shiff?s reagent done clear
  View Solution play_arrow

• question_answer171)
  Which of the following does not give Fehling solution test? [BCECE 2005]
  A)
                  Acetone               done clear
  B)
                  Propanal done clear
  C)
                  Ethanal done clear
  D)
                  Butanal done clear
  View Solution play_arrow

• question_answer172)
  How will you convert butan-2-one to propanoic acid? [IIT 2005]
  A)
  Tollen-s reagent               done clear
  B)
  Fehling's solution done clear
  C)
  \[NaOH/{{I}_{2}}/{{H}^{+}}\] done clear
  D)
  \[NaOH/NaI/{{H}^{+}}\] done clear
  View Solution play_arrow

• question_answer173)
  Ketones react with Mg-Hg over water gives        [AFMC 2005]
  A)
                  Pinacolone          done clear
  B)
                  Pinacols done clear
  C)
                  Alcohols               done clear
  D)
                  None of these done clear
  View Solution play_arrow

• question_answer174)
  Which of the following will form two isomers with semi carbazide             [Orissa JEE 2005]
  A)
                  Benzaldehyde   done clear
  B)
                  Acetone done clear
  C)
                  Benzoquinone done clear
  D)
                  Benzophenone done clear
  View Solution play_arrow

• question_answer175)
  A compound \[A\to {{C}_{5}}{{H}_{10}}C{{l}_{2}}\] on hydrolysis gives \[{{C}_{5}}{{H}_{10}}O\] which reacts with \[N{{H}_{2}}OH\], forms iodoform but does not give fehling test. \[A\] is              [DPMT 2005]
  A)
                  \[C{{H}_{3}}\underset{Cl}{\mathop{\underset{|}{\mathop{\overset{Cl}{\mathop{\overset{|}{\mathop{-C-}}\,}}\,}}\,}}\,C{{H}_{2}}-C{{H}_{2}}-C{{H}_{3}}\] done clear
  B)
                 \[C{{H}_{3}}C{{H}_{2}}\underset{Cl}{\mathop{\underset{|}{\mathop{\overset{Cl}{\mathop{\overset{|}{\mathop{-C-}}\,}}\,}}\,}}\,C{{H}_{2}}C{{H}_{3}}\] done clear
  C)
  \[C{{H}_{3}}C{{H}_{2}}C{{H}_{2}}C{{H}_{2}}\underset{Cl\,\,}{\mathop{\underset{|\,\,\,\,\,\,}{\mathop{\overset{Cl\,}{\mathop{\overset{|\,\,\,\,\,}{\mathop{CH}}\,}}\,}}\,}}\,\] done clear
  D)
                  \[C{{H}_{3}}\overset{Cl}{\mathop{\overset{|}{\mathop{-CH}}\,}}\,\overset{Cl}{\mathop{\overset{|}{\mathop{-CH}}\,}}\,-C{{H}_{2}}-C{{H}_{3}}\] done clear
  View Solution play_arrow

• question_answer176)
  \[C{{H}_{3}}-CHO+HCN\to A\]; Compound \[A\] on hydrolysis gives        [Kerala CET 2005]
  A)
                  \[C{{H}_{3}}-C{{H}_{2}}-COOH\] done clear
  B)
                  \[C{{H}_{3}}-C{{H}_{2}}-C{{H}_{2}}-N{{H}_{2}}\] done clear
  C)
                  \[C{{H}_{3}}-CO-COOH\] done clear
  D)
                  \[C{{H}_{3}}CO-CH=NOH\] done clear
  E)
                  \[C{{H}_{3}}-\underset{OH}{\mathop{\underset{|\,\,\,\,\,\,}{\mathop{CH}}\,}}\,-COOH\] done clear
  View Solution play_arrow

• question_answer177)
  Which one does not give cannizzaro's reaction [Kerala CET 2005]
  A)
                  Benzaldehyde done clear
  B)
                  2-methyl propanal done clear
  C)
                  p-methoxy benzaldehyde done clear
  D)
                  2,2 dimethyl propanal done clear
  E)
                  Formaldehyde done clear
  View Solution play_arrow