JEE Main & Advanced Chemistry Organic Chemistry: Some Basic Principles & Techniques / कार्बनिक रसायन : कुछ मूलभूत सिद्धांत एवं तकन Question Bank

done Chemical analysis of organic compounds Total Questions - 76

• question_answer1)
  Formula which represents a simple ratio of atoms of different elements present in a molecule of the substance is called
  A)
  Molecular formula done clear
  B)
  Empirical formula done clear
  C)
  Structural formula done clear
  D)
  Condensed formula done clear
  View Solution play_arrow

• question_answer2)
  Actual number of atoms of different elements present in a molecule of a compound is given by
  A)
  Molecular formula done clear
  B)
  Structural formula done clear
  C)
  Empirical formula done clear
  D)
  None of these done clear
  View Solution play_arrow

• question_answer3)
  A compound contains \[C=90%\] and \[H=10%\]. Empirical formula of the compound is [NCERT 1976; EAMCET 1978]
  A)
  \[{{C}_{3}}{{H}_{10}}\] done clear
  B)
  \[C{{H}_{2}}\] done clear
  C)
  \[{{C}_{3}}{{H}_{2}}\] done clear
  D)
  \[{{C}_{3}}{{H}_{4}}\] done clear
  View Solution play_arrow

• question_answer4)
  An organic compound contains \[C=36%\] \[H=6%\] and rest oxygen. Its Empirical formula is
  A)
  \[C{{H}_{2}}O\] done clear
  B)
  \[{{C}_{2}}{{H}_{3}}{{O}_{3}}\] done clear
  C)
  \[C{{H}_{2}}{{O}_{2}}\] done clear
  D)
  \[{{C}_{2}}{{H}_{2}}{{O}_{2}}\] done clear
  View Solution play_arrow

• question_answer5)
  Empirical formula of a compound is \[C{{H}_{2}}O\] and its vapour density is 30. Molecular formula of the compound is [MP PMT 1993; AIIMS 1998; CBSE PMT 2000; KCET (Med.) 2000; Pb. PMT 2000]
  A)
  \[{{C}_{3}}{{H}_{6}}{{O}_{3}}\] done clear
  B)
  \[{{C}_{2}}{{H}_{4}}{{O}_{2}}\] done clear
  C)
  \[{{C}_{2}}{{H}_{4}}O\] done clear
  D)
  \[C{{H}_{2}}O\] done clear
  View Solution play_arrow

• question_answer6)
  An organic compound on analysis gave C = 48 gm, H =  8 gm and N = 56 gm. Volume of 1.0 g of the compound was found to be 200 ml at NTP. Molecular formula of the compound is [MP PET 1986]
  A)
  \[{{C}_{4}}{{H}_{8}}{{N}_{4}}\] done clear
  B)
  \[{{C}_{2}}{{H}_{4}}{{N}_{2}}\] done clear
  C)
  \[{{C}_{12}}{{H}_{24}}{{N}_{12}}\] done clear
  D)
  \[{{C}_{16}}{{H}_{32}}{{N}_{16}}\] done clear
  View Solution play_arrow

• question_answer7)
  Insulin contains 3.4% sulphur. The minimum molecular weight of insulin is [MP PET 1993]
  A)
  350 done clear
  B)
  470 done clear
  C)
  560 done clear
  D)
  940 done clear
  View Solution play_arrow

• question_answer8)
  Which element is estimated by Carius method
  A)
  Carbon done clear
  B)
  Hydrogen done clear
  C)
  Halogen done clear
  D)
  Nitrogen done clear
  View Solution play_arrow

• question_answer9)
  On complete combustion 1.4 g hydrocarbon gave 1.8 g water. Empirical formula of the hydrocarbon is
  A)
  \[CH\] done clear
  B)
  \[C{{H}_{2}}\] done clear
  C)
  \[C{{H}_{3}}\] done clear
  D)
  \[C{{H}_{4}}\] done clear
  View Solution play_arrow

• question_answer10)
  In the estimation of sulphur organic compound on treating with conc. \[HN{{O}_{3}}\] is converted to
  A)
  \[S{{O}_{2}}\] done clear
  B)
  \[{{H}_{2}}S\] done clear
  C)
  \[{{H}_{2}}S{{O}_{4}}\] done clear
  D)
  \[S{{O}_{3}}\] done clear
  View Solution play_arrow

• question_answer11)
  In Carius method 0.099 g organic compound gave 0.287 g \[AgCl\]. The percentage of chlorine in the compound will be
  A)
  28.6 done clear
  B)
  71.7 done clear
  C)
  35.4 done clear
  D)
  64.2 done clear
  View Solution play_arrow

• question_answer12)
  0.24 g of an organic compound gave 0.22 g \[C{{O}_{2}}\] on complete combustion. If it contains 1.66 % hydrogen, then the percentage of C and O will be [MP PET 1986]
  A)
  12.5 and 36.6 done clear
  B)
  25 and 75 done clear
  C)
  25 and 36.6 done clear
  D)
  25 and 80 done clear
  View Solution play_arrow

• question_answer13)
  An organic compound contains \[C=74.0%,\] \[H=8.65%\] and \[N=17.3%\]. Its Empirical formula is [MP PMT 1986]
  A)
  \[{{C}_{5}}{{H}_{8}}N\] done clear
  B)
  \[{{C}_{10}}{{H}_{12}}N\] done clear
  C)
  \[{{C}_{5}}{{H}_{7}}N\] done clear
  D)
  \[{{C}_{10}}{{H}_{14}}N\] done clear
  View Solution play_arrow

• question_answer14)
  An appropriate method for molecular weight determination of chloroform is
  A)
  Regnault's method done clear
  B)
  Diffusion method done clear
  C)
  Vapour pressure method done clear
  D)
  Victor Meyer's method done clear
  View Solution play_arrow

• question_answer15)
  Molecular weight of an organic acid is given by
  A)
  Equivalent weight ´ basicity done clear
  B)
  \[\frac{\text{Equivalent weight}}{\text{Basicity}}\] done clear
  C)
  \[\frac{\text{Basicity}}{\text{Equivalent weight}}\] done clear
  D)
  Equivalent weight ´ valency done clear
  View Solution play_arrow

• question_answer16)
  If two compounds have the same empirical formula but different molecular formulae they must have [IIT-JEE 1987; Kurukshetra CEE 1998]
  A)
  Different percentage composition done clear
  B)
  Different molecular weight done clear
  C)
  Same viscosity done clear
  D)
  Same vapour density done clear
  View Solution play_arrow

• question_answer17)
  Empirical formula of a compound is \[{{C}_{2}}{{H}_{5}}O\] and its molecular weight is 90. Molecular formula of the compound is [NCERT 1971]
  A)
  \[{{C}_{2}}{{H}_{5}}O\] done clear
  B)
  \[{{C}_{3}}{{H}_{6}}{{O}_{3}}\] done clear
  C)
  \[{{C}_{4}}{{H}_{10}}{{O}_{2}}\] done clear
  D)
  \[{{C}_{5}}{{H}_{14}}O\] done clear
  View Solution play_arrow

• question_answer18)
  60 g of a compound on analysis gave \[C=24\text{ }g,\] \[H=4\text{ }g\] and O = 32 g. Its Empirical formula is [CPMT 1971, 81]
  A)
  \[{{C}_{2}}{{H}_{4}}{{O}_{2}}\] done clear
  B)
  \[{{C}_{2}}{{H}_{2}}O\] done clear
  C)
  \[C{{H}_{2}}{{O}_{2}}\] done clear
  D)
  \[C{{H}_{2}}O\] done clear
  View Solution play_arrow

• question_answer19)
  An organic compound contains \[C=38.8%,\] \[H=16%\] and \[N=45.2%\]. Empirical formula of the compound is [CPMT 1973, 83]
  A)
  \[C{{H}_{3}}N{{H}_{2}}\] done clear
  B)
  \[C{{H}_{3}}CN\] done clear
  C)
  \[{{C}_{2}}{{H}_{5}}CN\] done clear
  D)
  \[C{{H}_{2}}{{(NH)}_{2}}\] done clear
  View Solution play_arrow

• question_answer20)
  In Kjeldahl's method for the estimation of nitrogen, the formula used is
  A)
  \[%N=\frac{1.4\text{ }V\text{ }W}{N}\] done clear
  B)
  \[%N=\frac{1.4\text{ }N\text{ }W}{V}\] done clear
  C)
  \[%N=\frac{V\text{ }N\text{ }W}{1.8}\] done clear
  D)
  \[%N=\frac{1.4\text{ }V\text{ }N}{W}\] done clear
  View Solution play_arrow

• question_answer21)
  An organic compound on analysis gave the following results : C = 54.5%, O = 36.4%, H = 9.1%. The Empirical formula of the compound is [CPMT 1977; KCET 1998; MP PET 2003; UPSEAT 2004;  IIT-JEE (Screening) 2004]
  A)
  \[C{{H}_{3}}O\] done clear
  B)
  \[{{C}_{2}}{{H}_{4}}O\] done clear
  C)
  \[{{C}_{3}}{{H}_{4}}O\] done clear
  D)
  \[{{C}_{4}}{{H}_{8}}O\] done clear
  View Solution play_arrow

• question_answer22)
  An organic compound gave C = 92.31% and \[H=7.69%\]. If molecular weight of the compound is 78, its molecular formula is
  A)
  \[{{C}_{6}}{{H}_{6}}\] done clear
  B)
  \[{{C}_{7}}{{H}_{7}}\] done clear
  C)
  \[{{C}_{6}}{{H}_{18}}\] done clear
  D)
  \[{{C}_{8}}{{H}_{20}}\] done clear
  View Solution play_arrow

• question_answer23)
  An organic compound gave the following results \[C=53.3%,\text{ }H=15.6,\text{ }N=31.1%,\] mol. wt. = 45, What is molecular formula of the compound?
  A)
  \[{{C}_{2}}{{H}_{5}}{{N}_{2}}\] done clear
  B)
  \[{{C}_{2}}{{H}_{5}}N\] done clear
  C)
  \[{{C}_{2}}{{H}_{7}}N\] done clear
  D)
  \[{{C}_{2}}{{H}_{6}}N\] done clear
  View Solution play_arrow

• question_answer24)
  A compound gave 80% carbon and 20 % hydrogen on analysis. The compound is possibly [MADT Bihar 1984; MP PMT 1986]
  A)
  \[{{C}_{6}}{{H}_{6}}\] done clear
  B)
  \[{{C}_{2}}{{H}_{5}}OH\] done clear
  C)
  \[{{C}_{2}}{{H}_{6}}\] done clear
  D)
  \[CHC{{l}_{3}}\] done clear
  View Solution play_arrow

• question_answer25)
  A compound has 50% carbon, 50% oxygen and approximate molecular weight is 290. Its molecular formula is [MP PET 1995]
  A)
  CO done clear
  B)
  \[{{C}_{4}}{{O}_{3}}\] done clear
  C)
  \[{{C}_{12}}{{O}_{9}}\] done clear
  D)
  \[{{C}_{3}}{{O}_{3}}\] done clear
  View Solution play_arrow

• question_answer26)
  On analysis, a saturated hydrocarbon is found to contain 83.70 percent carbon and 16.30% hydrogen. The empirical formula will be (at. wt. of C=12, at. wt. of H = 1) [MP PMT 1995]
  A)
  \[{{C}_{3}}{{H}_{6}}\] done clear
  B)
  \[{{C}_{3}}{{H}_{8}}\] done clear
  C)
  \[{{C}_{3}}{{H}_{7}}\] done clear
  D)
  \[{{C}_{6}}{{H}_{12}}\] done clear
  View Solution play_arrow

• question_answer27)
  An organic compound has C = 60%, H = 13.3% and O = 26.7%. Its empirical formula will be
  A)
  \[{{C}_{3}}{{H}_{6}}O\] done clear
  B)
  \[{{C}_{2}}{{H}_{6}}{{O}_{2}}\] done clear
  C)
  \[{{C}_{4}}{{H}_{8}}{{O}_{2}}\] done clear
  D)
  \[{{C}_{3}}{{H}_{8}}O\] done clear
  View Solution play_arrow

• question_answer28)
  A hydrocarbon has C=85.72% and remaining H. The hydrocarbon is [MP PET 1996]
  A)
  \[{{C}_{2}}{{H}_{4}}\] done clear
  B)
  \[{{C}_{2}}{{H}_{6}}\] done clear
  C)
  \[{{C}_{2}}{{H}_{2}}\] done clear
  D)
  \[C{{H}_{4}}\] done clear
  View Solution play_arrow

• question_answer29)
  64 gm of an organic compound contains 24 gm of carbon, 8 gm of hydrogen and the rest oxygen. The empirical formula of the compound is [MP PMT 1996]
  A)
  \[C{{H}_{2}}O\] done clear
  B)
  \[{{C}_{2}}{{H}_{4}}O\] done clear
  C)
  \[C{{H}_{4}}O\] done clear
  D)
  \[{{C}_{2}}{{H}_{8}}{{O}_{2}}\] done clear
  View Solution play_arrow

• question_answer30)
  An organic compound contains C, H and O in the proportion of 6 : 1 : 8 by weight, respectively. Its vapour density is 30. Its molecular formula will be
  A)
  \[{{C}_{2}}{{H}_{4}}{{O}_{2}}\] done clear
  B)
  \[C{{H}_{4}}O\] done clear
  C)
  \[C{{H}_{2}}O\] done clear
  D)
  \[{{C}_{3}}HO\] done clear
  View Solution play_arrow

• question_answer31)
  The vapour density of the methyl ester of an organic monocarboxylic acid is 37. What is the molecular weight of the acid
  A)
  46 done clear
  B)
  60 done clear
  C)
  70 done clear
  D)
  74 done clear
  View Solution play_arrow

• question_answer32)
  Empirical formula of a hydrocarbon containing 80% carbon and 20% hydrogen is [MP PET 1997; EAMCET 1998; JIPMER 2002]
  A)
  CH done clear
  B)
  \[C{{H}_{2}}\] done clear
  C)
  \[C{{H}_{3}}\] done clear
  D)
  \[C{{H}_{4}}\] done clear
  View Solution play_arrow

• question_answer33)
  An organic compound with C = 40% and H = 6.7% will have the empirical formula [MP PET 1999; JIPMER 2002]
  A)
  \[C{{H}_{2}}\] done clear
  B)
  \[C{{H}_{2}}O\] done clear
  C)
  \[{{C}_{3}}{{H}_{6}}{{O}_{3}}\] done clear
  D)
  \[{{C}_{2}}{{H}_{4}}{{O}_{2}}\] done clear
  View Solution play_arrow

• question_answer34)
  Which of the following relations gives the value of n = [Bihar MEE 1996]
  A)
  \[\frac{\text{Moleculer Mass}}{\text{Atomic Mass}}\] done clear
  B)
  \[\frac{\text{Molecular Mass}}{\text{Empirical Mass}}\] done clear
  C)
  \[\frac{\text{Empirical Mass}}{\text{Molecular Mass}}\] done clear
  D)
  None of these done clear
  View Solution play_arrow

• question_answer35)
  An organic compound containing C, H and N gave following analysis : C = 40%, H = 13.33% and N = 46.67%. Its empirical formula would be [CBSE PMT 1998, 99; AFMC 2000; KCET 2002; Pb. PMT 2004]
  A)
  \[{{C}_{2}}{{H}_{7}}{{N}_{2}}\] done clear
  B)
  \[C{{H}_{5}}N\] done clear
  C)
  \[C{{H}_{4}}N\] done clear
  D)
  \[{{C}_{2}}{{H}_{7}}N\] done clear
  View Solution play_arrow

• question_answer36)
  If a compound on analysis was found to contain C = 18.5%, H = 1.55%, Cl = 55.04% and O = 24.81%, then its empirical formula is [AIIMS 1998]
  A)
  \[CHClO\] done clear
  B)
  \[C{{H}_{2}}ClO\] done clear
  C)
  \[{{C}_{2}}{{H}_{2}}OCl\] done clear
  D)
  \[ClC{{H}_{2}}O\] done clear
  View Solution play_arrow

• question_answer37)
  An organic compound has % of C and % of H in the ratio 6 : 1 and % of C and % of O in the ratio 3 : 4. The compound is [Roorkee 1999]
  A)
  \[HCHO\] done clear
  B)
  \[C{{H}_{3}}OH\] done clear
  C)
  \[C{{H}_{3}}C{{H}_{2}}OH\] done clear
  D)
  \[{{H}_{2}}\to {{H}^{\bullet }}+{{H}^{\bullet }}\] done clear
  View Solution play_arrow

• question_answer38)
  0.2595g of an organic substance in a quantitative analysis yielded 0.35 g of the barium sulphate. The percentage of sulphur in the substance is  [CPMT 2000; AFMC 2001; Pb. CET 2000]
  A)
  18.52g done clear
  B)
  182.2 g done clear
  C)
  17. 5 g done clear
  D)
  175.2g done clear
  View Solution play_arrow

• question_answer39)
  In kjeldahl?s method, \[CuS{{O}_{4}}\] acts as [AFMC 2001]
  A)
  Oxidising agent done clear
  B)
  Reducing agent done clear
  C)
  Hydrolysing agent done clear
  D)
  Catalytic agent done clear
  View Solution play_arrow

• question_answer40)
  In the qualitative analysis of nitrate a brown ring is formed due to the formation of [AMU 2001]
  A)
  \[N{{O}_{2}}\] done clear
  B)
  \[FeS{{O}_{4}}N{{O}_{2}}\] done clear
  C)
  \[{{N}_{2}}O.FeS{{O}_{4}}\] done clear
  D)
  \[FeS{{O}_{4}}.NO\] done clear
  View Solution play_arrow

• question_answer41)
  Percentage composition of an organic compounds is as follows: C = 10.06, H = 0.84, Cl = 89.10. Which of the following corresponds to its molecular formula if the vapour density is 60.0 [AMU 2001]
  A)
  \[C{{H}_{2}}C{{l}_{2}}\] done clear
  B)
  \[CHC{{l}_{3}}\] done clear
  C)
  \[C{{H}_{3}}Cl\] done clear
  D)
  None of these done clear
  View Solution play_arrow

• question_answer42)
  The percentage of \[{{N}_{2}}\] in urea is about [KCET (Med.) 2001]
  A)
  18.05 done clear
  B)
  28.29 done clear
  C)
  46.66 done clear
  D)
  85.56 done clear
  View Solution play_arrow

• question_answer43)
  A compound of carbon hydrogen and nitrogen contains three elements in the respective ratio of 9 : 1 : 35 grams. The Empirical formula for the compound is [DCE 2001]
  A)
  \[{{C}_{2}}{{H}_{4}}N\] done clear
  B)
  \[{{C}_{3}}{{H}_{4}}N\] done clear
  C)
  \[{{C}_{3}}{{H}_{6}}N\] done clear
  D)
  \[{{C}_{2}}{{H}_{6}}N\] done clear
  View Solution play_arrow

• question_answer44)
  Which of the following is the best scientific method to test the presence of water in a liquid [JIPMER 2001]
  A)
  Use of anhydrous copper sulphate done clear
  B)
  Use of litmus paper done clear
  C)
  Taste done clear
  D)
  Smell done clear
  View Solution play_arrow

• question_answer45)
  Chromatography is a valuable method for the separation, isolation, purification and identification of the constituents of a mixture and it is based on general principle of  [Kerala (Med.) 2002]
  A)
  Phase rule done clear
  B)
  Phase distribution done clear
  C)
    Interphase separation done clear
  D)
  Phase operation done clear
  View Solution play_arrow

• question_answer46)
  To differentiate between carbon-12, carbon-13 and carbon-14, the instrument that you would use in [Kerala (Engg.) 2002]
  A)
  Infra-red spectrometer done clear
  B)
  Atomic absorption spectrometer done clear
  C)
  Mass spectrometer done clear
  D)
  Ultraviolet spectrometer done clear
  View Solution play_arrow

• question_answer47)
  Chromatography is used for the purification of [KCET 2002]
  A)
  Solids done clear
  B)
  liquids done clear
  C)
  Gases done clear
  D)
  All of these done clear
  View Solution play_arrow

• question_answer48)
  An organic compound has been found to possess the Empirical formula \[C{{H}_{2}}O\] and molecular weight 90. The molecular formula of it is \[(C=12,\,\,H=1,\,\text{and}\,\,O=16)\] [CPMT 2000; MP PET 2002]
  A)
  \[{{C}_{3}}{{H}_{6}}{{O}_{3}}\] done clear
  B)
  \[C{{H}_{2}}O\] done clear
  C)
  \[{{C}_{2}}{{H}_{6}}{{O}_{2}}\] done clear
  D)
  \[{{C}_{2}}{{H}_{2}}O\] done clear
  View Solution play_arrow

• question_answer49)
  An organic compound containing carbon hydrogen and oxygen contains 52.20% carbon and 13.04% hydrogen. Vapour density of the compound is 23. Its molecular formula will be [MP PMT 2002]
  A)
  \[{{C}_{2}}{{H}_{6}}O\] done clear
  B)
  \[{{C}_{3}}{{H}_{8}}O\] done clear
  C)
  \[{{C}_{4}}{{H}_{8}}O\] done clear
  D)
  \[{{C}_{5}}{{H}_{10}}O\] done clear
  View Solution play_arrow

• question_answer50)
  Lassaigne?s test is used to detect [Kerala (Engg.) 2002]
  A)
  Nitrogen and halogens done clear
  B)
  Sodium and halogens done clear
  C)
  Halogens and sulphur done clear
  D)
  Nitrogen and sulphur done clear
  E)
  All of the above done clear
  View Solution play_arrow

• question_answer51)
  In Lassaigne?s test the organic compound is fused with Na followed by extraction with distilled water. Which of the following is not the possible product of this fusion reaction [AMU 2002]
  A)
  NaX done clear
  B)
  \[NaCN\] done clear
  C)
  NaNC done clear
  D)
  \[N{{a}_{2}}S\] done clear
  View Solution play_arrow

• question_answer52)
  The Empirical formula of a compound is \[C{{H}_{2}}O\] and its molecular weight is 120. The molecular formula of the compound is [Kerala (Med.) 2003]
  A)
  \[{{C}_{2}}{{H}_{4}}{{O}_{2}}\] done clear
  B)
  \[{{C}_{3}}{{H}_{6}}{{O}_{3}}\] done clear
  C)
  \[{{C}_{4}}{{H}_{8}}{{O}_{4}}\] done clear
  D)
  \[C{{H}_{2}}O\] done clear
  View Solution play_arrow

• question_answer53)
  In Victor Mayer?s method 0.2 gm of an organic substance displaced 56 ml of air at STP the molecular weight of the compound [Kerala (Med.) 2003]
  A)
  56 done clear
  B)
  112 done clear
  C)
  80 done clear
  D)
  28 done clear
  View Solution play_arrow

• question_answer54)
  If we want to study relative arrangement of atoms in a molecule we study [Orissa JEE 2003]
  A)
  Empirical formula done clear
  B)
  Molecular formula done clear
  C)
  Structural formula done clear
  D)
  None of these done clear
  View Solution play_arrow

• question_answer55)
  Which one of the following reagents is used for detection of unsaturation in alkenes [EAMCET 2003]
  A)
  \[NaOH+CaO\] done clear
  B)
  Cold dilute alkaline \[KMn{{O}_{4}}\] done clear
  C)
  \[C{{l}_{2}}/hv\] done clear
  D)
  \[KOH/{{C}_{2}}{{H}_{5}}OH\] done clear
  View Solution play_arrow

• question_answer56)
  The decomposition of organic compounds in the presence of oxygen and without formation of odoriferous substances, is called [CBSE PMT 1999]
  A)
  Decay done clear
  B)
  \[{{N}_{2}}\] fixation done clear
  C)
  Nitrification done clear
  D)
  Denitrification done clear
  View Solution play_arrow

• question_answer57)
  Which of the following compounds is used as a refrigerants [Bihar CEE 1995]
  A)
  \[N{{H}_{3}}\] done clear
  B)
  \[C{{H}_{2}}{{F}_{2}}\] done clear
  C)
  \[CC{{l}_{4}}\] done clear
  D)
  \[C{{H}_{3}}COON{{H}_{4}}\] done clear
  View Solution play_arrow

• question_answer58)
  The latest technique for the purification of organic compounds is [Pb. CET 2001]
  A)
  Fractional distillation done clear
  B)
  Chromatography done clear
  C)
  Vacuum distillation done clear
  D)
  Crystallisation done clear
  View Solution play_arrow

• question_answer59)
  The presence of halogen, in an organic compounds, is detected by [Pb. CET 2002]
  A)
  Iodoform test done clear
  B)
  Silver nitrate test done clear
  C)
  Beilstein?s test done clear
  D)
  Millon?s test done clear
  View Solution play_arrow

• question_answer60)
  p-nitrophenol and o-nitrophenol are separated by [BVP 2004]
  A)
  Crystallisation done clear
  B)
  Fractional crystallisation done clear
  C)
  Distillation done clear
  D)
  Steam distillation done clear
  View Solution play_arrow

• question_answer61)
  Nitrating mixture is [MH  CET 2004]
  A)
  Fuming nitric acid done clear
  B)
  Mixture of conc. \[{{H}_{2}}S{{O}_{4}}\] and conc. \[HN{{O}_{3}}\] done clear
  C)
  Mixture of nitric acid and anhydrous zinc chloride done clear
  D)
  None of these done clear
  View Solution play_arrow

• question_answer62)
  Quantitative measurement of nitrogen in an organic compounds is done by the method [CPMT  2004]
  A)
  Berthelot method done clear
  B)
  Belstein method done clear
  C)
  Lassaigne test done clear
  D)
  Kjheldahl's method done clear
  View Solution play_arrow

• question_answer63)
  Which kind of fission is favoured by sunlight [CPMT 2004]
  A)
  Heterolytic fission done clear
  B)
  Homolytic fission done clear
  C)
  Both A and B done clear
  D)
  None of these done clear
  View Solution play_arrow

• question_answer64)
  The ammonia evolved from the treatment of 0.30 g of an organic compound for the estimation of nitrogen was passed in 100 mL of 0.1 M sulphuric acid. The excess of acid required 20 mL of 0.5 M sodium hydroxide solution for complete neutralization. The organic compound is [AIEEE 2004]
  A)
  Urea done clear
  B)
  Benzamide done clear
  C)
  Acetamide done clear
  D)
  Thiourea done clear
  View Solution play_arrow

• question_answer65)
  The best method for the separation of naphthalene and benzoic acid from their mixture is  [CBSE PMT 2005]
  A)
  Chromatography done clear
  B)
  Crystallisation done clear
  C)
  Distillation done clear
  D)
  Sublimation done clear
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• question_answer66)
  A compound has an empirical formula \[{{C}_{2}}{{H}_{4}}O\]. An independent analysis gave a value of 132.16 for its molecular mass. What is the correct molecular formula [Kerala PMT 2004]
  A)
  \[{{C}_{4}}{{H}_{4}}{{O}_{5}}\] done clear
  B)
  \[{{C}_{10}}{{H}_{12}}\] done clear
  C)
  \[{{C}_{7}}{{O}_{3}}\] done clear
  D)
  \[{{C}_{6}}{{H}_{12}}{{O}_{3}}\] done clear
  E)
  \[{{C}_{4}}{{H}_{8}}{{O}_{5}}\] done clear
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• question_answer67)
  An organic compound has an empirical formula \[C{{H}_{2}}O\], its vapour density is 45. The molecular formula of the compounds is  [DCE  2004]
  A)
  \[C{{H}_{2}}O\] done clear
  B)
  \[{{C}_{2}}{{H}_{5}}O\] done clear
  C)
  \[{{C}_{2}}{{H}_{2}}O\] done clear
  D)
  \[{{C}_{3}}{{H}_{6}}{{O}_{3}}\] done clear
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• question_answer68)
  The study of organic compounds even at present is done separate from other compounds because [CPMT 1986]
  A)
  The formation of organic compounds is not based on chemical combination done clear
  B)
  Organic compounds are covalent done clear
  C)
  Catenation is the main characteristics done clear
  D)
  It is the easiest method of study done clear
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• question_answer69)
  Which of the following pair of the species has the same percentage of carbon [BHU 1999]
  A)
  \[C{{H}_{3}}-C{{H}_{2}}-\underset{\,\,C{{H}_{2}}C{{H}_{3}}\,\,\,\,\,}{\mathop{\underset{\,\,|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,}{\overset{\overset{\,C{{H}_{3}}C{{H}_{2}}\,\,\,\,}{\mathop{\,\,|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,}}\,}{\mathop{C\,\,\,\,\,\,\,\,-\,\,\,\,\,\,}}}\,}}\,\overset{\overset{C{{H}_{3}}}{\mathop{|\,\,\,\,\,\,}}\,\,\,\,\,\,\,}{\mathop{CH\,-\,}}\,C{{H}_{2}}-{{(C{{H}_{2}})}_{2}}-C{{H}_{3}}\] and \[{{C}_{2}}{{H}_{5}}OH\] done clear
  B)
  \[{{C}_{6}}{{H}_{12}}{{O}_{6}}\] and \[{{C}_{12}}{{H}_{22}}{{O}_{11}}\] done clear
  C)
  \[{{C}_{6}}{{H}_{12}}{{O}_{6}}\] and \[{{C}_{12}}{{O}_{22}}{{O}_{11}}\] done clear
  D)
  \[{{C}_{12}}{{O}_{22}}{{O}_{11}}\] and \[{{C}_{6}}{{H}_{12}}{{O}_{6}}\] done clear
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• question_answer70)
  In Kjeldahl?s method of estimation of N,\[CuS{{O}_{4}}\]acts as [DCE 2002]
  A)
  Oxidising agent done clear
  B)
  Reducing agent done clear
  C)
  Catalytic agent done clear
  D)
  Hydrolysis agent done clear
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• question_answer71)
  An organic compound having molecular mass 60 is found to contain C = 20%, H= 6.67% and N=46.67% while rest is oxygen. On heating it gives \[N{{H}_{3}}\] alongwith a solid residue. The solid residue give violet colour with alkaline copper sulphate solution. the compound is [AIEEE 2005]
  A)
  \[C{{H}_{3}}NCO\] done clear
  B)
  \[C{{H}_{3}}CON{{H}_{2}}\] done clear
  C)
  \[{{(N{{H}_{2}})}_{2}}CO\] done clear
  D)
  \[C{{H}_{3}}C{{H}_{2}}CON{{H}_{2}}\] done clear
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• question_answer72)
  How will you separate a solution (miscible) of benzene \[+CHC{{l}_{3}}\] [AFMC 2005]
  A)
  Sublimation done clear
  B)
  Filtration done clear
  C)
  Distillation done clear
  D)
  Crystallisation done clear
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• question_answer73)
  A mixture of camphor and benzoic acid can be separated by  [BHU 2005]
  A)
  Chemical method done clear
  B)
  Sublimation done clear
  C)
  Fractional distillation done clear
  D)
  Extraction with a solvent done clear
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• question_answer74)
  Dumas method involves the determination of nitrogen content in the organic compound in the form of  [BHU 2005]
  A)
  NH3 done clear
  B)
  N2 done clear
  C)
  NaCN done clear
  D)
  (NH4)2SO4 done clear
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• question_answer75)
  When 32.25gm ethyl chloride dehydro halogenated, if gives 50%. Alkene, what is the mass of product. (atomic mass of chlorine = 35.5) [Kerala CET 2005]
  A)
  14 gm done clear
  B)
  28 gm done clear
  C)
  64.5 gm done clear
  D)
  56 gm done clear
  E)
  7 gm done clear
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• question_answer76)
  How much sulphur is present in organic compound if on analysis 0.53 gm of this compound gives 1.158 gm of \[BaS{{O}_{4}}\] [Kerala CET 2005]
  A)
  10% done clear
  B)
  15% done clear
  C)
  20% done clear
  D)
  25% done clear
  E)
  30% done clear
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