JEE Main & Advanced Chemistry Carboxylic Acids Question Bank

done Critical Thinking Carboxylic Acids Total Questions - 17

• question_answer1)
  Ethyl ester\[\underset{\text{excess}}{\mathop{\xrightarrow{C{{H}_{3}}MgBr}}}\,P\]. The product P will be                                                            [IIT-JEE 2003]
  A)
                  done clear
  B)
                           done clear
  C)
                  done clear
  D)
                  done clear
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• question_answer2)
  Hydrogenation of \[{{C}_{6}}{{H}_{5}}CHOH-COOH\] over \[Rh-A{{l}_{2}}{{O}_{3}}\] catalyst in methanol gives [Roorkee Qualifying 1998]
  A)
                  \[{{C}_{6}}{{H}_{5}}C{{H}_{2}}COOH\]    done clear
  B)
                  \[{{C}_{6}}{{H}_{11}}CHOHCOOH\] done clear
  C)
                  \[{{C}_{6}}{{H}_{5}}CHOHC{{H}_{2}}OH\]              done clear
  D)
                  \[{{C}_{6}}{{H}_{11}}C{{H}_{2}}COOH\] done clear
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• question_answer3)
  Which of the following has the most acidic proton [Roorkee Qualifying 1998]
  A)
                  \[C{{H}_{3}}COC{{H}_{3}}\]         done clear
  B)
                  \[{{(C{{H}_{3}})}_{2}}C=C{{H}_{2}}\] done clear
  C)
                  \[C{{H}_{3}}COC{{H}_{2}}COC{{H}_{3}}\]               done clear
  D)
                  \[{{(C{{H}_{3}}CO)}_{3}}CH\] done clear
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• question_answer4)
  In the anion \[HCO{{O}^{-}}\] the two carbon-oxygen bonds are found to be of equal length. What is the reason for it
  A)
  Electronic orbitals of carbon atom are hybridised done clear
  B)
  The  C = O bond is weaker than the C - O bond done clear
  C)
  The anion \[HCO{{O}^{-}}\] has two resonating structures done clear
  D)
  The anion is obtained by removal of a proton form the acid molecule done clear
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• question_answer5)
  An organic compound of molecular formula \[{{C}_{4}}{{H}_{10}}O\] does not react with sodium. With excess of \[HI,\] it gives only one type of alkyl halide. The compound is       [SCRA 2001]
  A)
                  Ethoxyethane   done clear
  B)
                  2-Methoxypropane done clear
  C)
                  1-Methoxypropane        done clear
  D)
                  1-Butanol done clear
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• question_answer6)
  When \[C{{H}_{2}}=CH-COOH\] is reduced with \[LiAl{{H}_{4}}\], the compound obtained will be [AIEEE 2003]
  A)
                  \[C{{H}_{3}}-C{{H}_{2}}-COOH\]                done clear
  B)
                  \[C{{H}_{2}}=CH-C{{H}_{2}}OH\] 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
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• question_answer7)
  In a set of the given reactions, acetic acid yielded a product C \[C{{H}_{3}}COOH+PC{{l}_{5}}\to A\underset{anh.\,AlC{{l}_{3}}}{\mathop{\xrightarrow{{{C}_{6}}{{H}_{6}}}}}\,\]\[B\underset{ether}{\mathop{\xrightarrow{{{C}_{2}}{{H}_{5}}MgBr}}}\,C\].Product C would be                                         [CBSE PMT 2003]
  A)
                  \[\overset{\overset{{{C}_{2}}{{H}_{5}}}{\mathop{|\,\,\,\,\,\,\,\,\,\,}}\,}{\mathop{C{{H}_{3}}-C(OH){{C}_{6}}{{H}_{5}}}}\,\]      done clear
  B)
                  \[C{{H}_{3}}CH(OH){{C}_{2}}{{H}_{5}}\] done clear
  C)
                  \[C{{H}_{3}}CO{{C}_{6}}{{H}_{5}}\]          done clear
  D)
                  \[C{{H}_{3}}CH(OH){{C}_{6}}{{H}_{5}}\] done clear
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• question_answer8)
  Carboxylic acids are more acidic than phenol and alcohol because of                        [Tamil Nadu CET 2001]
  A)
                  Intermolecular hydrogen bonding done clear
  B)
                  Formation of dimers done clear
  C)
                  Highly acidic hydrogen done clear
  D)
                  Resonance stabilization of their conjugate base done clear
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• question_answer9)
  \[R-C{{H}_{2}}-C{{H}_{2}}OH\] can be converted into \[RC{{H}_{2}}C{{H}_{2}}COOH.\] The correct sequence of the reagents is [AIIMS 1997]
  A)
                  \[PB{{r}_{3}},KCN,{{H}_{3}}{{O}^{+}}\]   done clear
  B)
                  \[PB{{r}_{3}},KCN,{{H}_{2}}\] done clear
  C)
                  \[HCN,PB{{r}_{3}},{{H}^{+}}\]     done clear
  D)
                  \[KCN,{{H}^{+}}\] done clear
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• question_answer10)
  When propionic acid is treated with aqueous sodium bicarbonate \[C{{O}_{2}}\] is liberated. The 'C' of \[C{{O}_{2}}\] comes from [IIT-JEE (Screening) 1999]
  A)
  Methyl group    done clear
  B)
  Carboxylic acid group done clear
  C)
  Methylene group            done clear
  D)
  Bicarbonate done clear
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• question_answer11)
  Benzoyl chloride is prepared from benzoic acid by [IIT-JEE (Screening) 2000]
  A)
                  \[C{{l}_{2}},\,\,hv\]         done clear
  B)
                  \[S{{O}_{2}}C{{l}_{2}}\] done clear
  C)
                  \[SOC{{l}_{2}}\]                done clear
  D)
                  \[C{{l}_{2}},{{H}_{2}}O\] done clear
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• question_answer12)
  Identify the correct order of boiling points of the following compounds \[\underset{(1)}{\mathop{C{{H}_{3}}C{{H}_{2}}C{{H}_{2}}C{{H}_{2}}OH}}\,\],\[\underset{(2)}{\mathop{C{{H}_{3}}C{{H}_{2}}C{{H}_{2}}CHO}}\,\], \[\underset{(3)}{\mathop{C{{H}_{3}}C{{H}_{2}}C{{H}_{2}}COOH}}\,\]     [IIT-JEE (Screening) 2002]
  A)
                  \[1>2>3\]            done clear
  B)
                  \[3>1>2\] done clear
  C)
                  \[1>3>2\]            done clear
  D)
                  \[3>2>1\] done clear
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• question_answer13)
  The compound not soluble in acetic acid is [UPSEAT 2003; IIT-JEE 1986]
  A)
                  \[CaC{{O}_{3}}\]               done clear
  B)
                  \[CaO\] done clear
  C)
                  \[Ca{{C}_{2}}{{O}_{4}}\]                done clear
  D)
                  \[Ca{{(OH)}_{2}}\] done clear
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• question_answer14)
  The ortho/para directing group among the following is [AIIMS 2003]
  A)
                  \[COOH\]            done clear
  B)
                  \[CN\] done clear
  C)
                  \[COC{{H}_{3}}\]              done clear
  D)
                  \[NHCOC{{H}_{3}}\] done clear
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• question_answer15)
  Iodoform test is not given by      [BHU 1995]
  A)
                  Acetone               done clear
  B)
                  Ethyl alcohol done clear
  C)
                  Acetic acid           done clear
  D)
                  None of these done clear
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• question_answer16)
  How will you convert butan-2-one to propanoic acid [IIT-JEE (Screening) 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
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• question_answer17)
  Which of the acids cannot be prepared by Grignard reagent [MH CET 2004]
  A)
                  Acetic acid           done clear
  B)
                  Succinic acid done clear
  C)
              Formic acid     done clear
  D)
              All of these done clear
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