JEE Main & Advanced Chemistry Aldehydes, Ketones Question Bank

done Introduction Total Questions - 18

• question_answer1)
  Reaction of acetaldehyde with HCN followed by hydrolysis gives a compound which shows         [MP PET 1997]
  A)
                  Optical isomerism            done clear
  B)
                  Geometrical isomerism done clear
  C)
                  Metamerism      done clear
  D)
                  Tautomerism done clear
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• question_answer2)
  In aldehydes and ketones, carbon of carbonyl group is [MP PMT 1995; RPET 1999, 2000]
  A)
                  \[s{{p}^{3}}\] hybridised               done clear
  B)
                  \[s{{p}^{2}}\] hybridized done clear
  C)
                  sp hybridised     done clear
  D)
                  Unhybridised done clear
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• question_answer3)
  The IUPAC name of the following structure is \[\overset{\overset{C{{H}_{3}}\,\,\,O\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,}{\mathop{|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,||\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,}}\,}{\mathop{C{{H}_{3}}-CH-C-C{{H}_{2}}-C{{H}_{2}}OH}}\,\]                         [MP PMT 1995]
  A)
                  1-hydroxy 4-methyl 3-pentanone done clear
  B)
                  2-methyl 5-hydroxy 3-pentanone done clear
  C)
                  4-methyl 3-oxo 1-pentanol done clear
  D)
                  Hexanol-1, one-3 done clear
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• question_answer4)
  Glyoxal is                                            [BVP 2003]
  A)
                  \[C{{H}_{2}}O-C{{H}_{2}}O\]       done clear
  B)
                  \[\underset{\underset{C{{H}_{2}}OH}{\mathop{|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,}}\,}{\mathop{C{{H}_{2}}OH}}\,\] done clear
  C)
                  \[\underset{\underset{CHO}{\mathop{|\,\,\,\,\,\,\,\,}}\,}{\mathop{CHO}}\,\]  done clear
  D)
                  \[\underset{\underset{CHO\,\,\,\,\,}{\mathop{|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,}}\,}{\mathop{C{{H}_{2}}OH}}\,\] done clear
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• question_answer5)
  Aldehydes are isomeric with
  A)
                  Ketones               done clear
  B)
                  Ethers done clear
  C)
                  Alcohols               done clear
  D)
                  Fatty acids done clear
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• question_answer6)
  Which of the following compounds does not contain an \[-OH\] group                                   [CPMT 1982]
  A)
                  Phenol  done clear
  B)
                  Carboxylic acid done clear
  C)
                  Aldehydes          done clear
  D)
                  Alcohols done clear
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• question_answer7)
  IUPAC name of \[C{{H}_{3}}COC{{H}_{3}}\] is     [MP PET 1991]
  A)
                  Acetone               done clear
  B)
                  2-propanone done clear
  C)
                  Dimethyl ketone              done clear
  D)
                  Propanal done clear
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• question_answer8)
  What is the compound called if remaining two valencies of a carbonyl group are satisfied by two alkyl groups [CPMT 1990]
  A)
                  Aldehyde            done clear
  B)
                  Ketone done clear
  C)
                  Acid       done clear
  D)
                  Acid chloride done clear
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• question_answer9)
  \[C{{H}_{3}}-\overset{\overset{OH}{\mathop{|\,\,\,}}\,}{\mathop{\underset{\underset{H}{\mathop{|}}\,}{\mathop{C}}\,-}}\,CN\] is
  A)
                  Acetaldehyde cyanohydrin done clear
  B)
                  Acetone cyanohydrin done clear
  C)
                  Cyanoethanol done clear
  D)
                  Ethanol nitrile done clear
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• question_answer10)
  Ethanedial has which functional group(s)
  A)
                  One ketonic       done clear
  B)
                  Two aldehydic done clear
  C)
                  One double bond            done clear
  D)
                  Two double bond done clear
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• question_answer11)
  In the group \[\begin{matrix}    {{R}'}  \\    R  \\ \end{matrix}>C=O\] the carbonyl carbon is joined to other atoms by
  A)
                  Two sigma and one pi bonds done clear
  B)
                  Three sigma and one pi bonds done clear
  C)
                  One sigma and two pi bonds done clear
  D)
                  Two sigma and two pi bonds done clear
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• question_answer12)
  Which of the following types of isomerism is shown by pentanone                                          [MP PMT 1995]
  A)
                  Chain isomerism               done clear
  B)
                  Position isomerism done clear
  C)
                  Functional isomerism     done clear
  D)
                  All of these done clear
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• question_answer13)
  IUPAC name of \[CC{{l}_{3}}CHO\] is      [MP PMT/PET 1988]
  A)
                  Chloral  done clear
  B)
                  Trichloro acetaldehyde done clear
  C)
                  1, 1, 1-trichloroethanal  done clear
  D)
                  2, 2, 2-trichloroethanal done clear
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• question_answer14)
  Which of the following is a mixed ketone              [AFMC 1997]
  A)
                  Pentanone         done clear
  B)
                  Acetophenone done clear
  C)
                  Benzophenone done clear
  D)
                  Butanone done clear
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• question_answer15)
  Chloral is                                              [CPMT 1976, 84]
  A)
                  \[CC{{l}_{3}}CHO\]          done clear
  B)
                  \[CC{{l}_{3}}COC{{H}_{3}}\] done clear
  C)
                  \[CC{{l}_{3}}COCC{{l}_{3}}\]        done clear
  D)
                  \[CC{{l}_{3}}C{{H}_{2}}OH\] done clear
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• question_answer16)
  Carbonyl compounds are usually
  A)
                  Ethers, aldehydes, ketones and carboxylic acids done clear
  B)
                  Aldehydes, ketones and carboxylic acids done clear
  C)
                  Aldehydes and ketones done clear
  D)
                  Carboxylic acids done clear
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• question_answer17)
  Acetone and acetaldehyde are  [KCET 1998]
  A)
                  Position isomers               done clear
  B)
                  Functional isomers done clear
  C)
                  Not isomers       done clear
  D)
                  Chain isomers done clear
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• question_answer18)
  Which of the aldehyde is most reactive?                 [DCE 2004]
  A)
                  \[{{C}_{6}}{{H}_{5}}-CHO\]          done clear
  B)
                  \[C{{H}_{3}}CHO\] done clear
  C)
                  \[HCHO\]             done clear
  D)
                  All the equally reactive done clear
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