NEET Chemistry Aldehydes, Ketones Question Bank

done Self Evaluation Test - Aldehydes, Ketons and Carboxylic Acids Total Questions - 100

• question_answer1)
  Product [B] is
  A)
     done clear
  B)
  done clear
  C)
     done clear
  D)
  done clear
  View Solution play_arrow

• question_answer2)

  \[(Q)\xrightarrow[^{\Delta }]{EOH}Ph-C{{H}_{2}}-OH+Ph-C{{O}_{2}}\]

  \[(R)\xrightarrow{{{O}_{3}}}P+Q\], Structure of(R) is:

  A)
  \[Ph-CH=CH-C{{H}_{3}}\] done clear
  B)
  done clear
  C)
  \[Ph-\overset{C{{H}_{3}}}{\mathop{\overset{|}{\mathop{C}}\,}}\,=CH-C{{H}_{3}}\] done clear
  D)
  \[Ph-\overset{C{{H}_{3}}}{\mathop{\overset{|}{\mathop{C}}\,}}\,=C{{H}_{2}}\] done clear
  View Solution play_arrow

• question_answer3)
  From the ozonolysis products, the two isomers A and B can be distinguished with the help of
  A)
  Fehling solution   done clear
  B)
  Tollen's reagent done clear
  C)
  Haloformtest     done clear
  D)
  only spectroscopy done clear
  View Solution play_arrow

• question_answer4)
  The correct set of reagents to carry out the following conversion
  A)
  \[{{B}_{2}}{{H}_{6}}/diglyme,{{H}_{2}}{{O}_{2}}/NaOH,\]\[PCC/C{{H}_{2}}C{{l}_{2}}\] done clear
  B)
  \[B{{r}_{2}},NaN{{H}_{2}},HgS{{O}_{4}}/{{H}_{2}}S{{O}_{4}}\] done clear
  C)
  \[{{H}_{2}}O/{{H}_{2}}S{{O}_{4}},Cr{{O}_{3}}/{{H}_{2}}S{{O}_{4}}\] done clear
  D)
  None of the above done clear
  View Solution play_arrow

• question_answer5)
  Which of the following gives ethanal \[C{{H}_{3}}CHO\]on acid hydrolysis?
  A)
  done clear
  B)
  done clear
  C)
  done clear
  D)
  done clear
  View Solution play_arrow

• question_answer6)
  The following reaction is known as
  A)
  Perkin reaction done clear
  B)
  Gattermann aldehyde synthesis done clear
  C)
  Kolbe's reaction done clear
  D)
  Gattermann-Koch reaction done clear
  View Solution play_arrow

• question_answer7)
  What is X in the following conversion?
  A)
  \[{{K}_{2}}C{{r}_{2}}{{O}_{7}},{{H}_{2}}S{{O}_{4}}/{{H}_{2}}O\] done clear
  B)
  \[HI{{O}_{4}}\] done clear
  C)
  \[PCC/C{{H}_{2}}C{{l}_{2}}\] done clear
  D)
  \[Os{{O}_{4}},{{\left( C{{H}_{3}} \right)}_{3}}C.COOH,{{\left( C{{H}_{3}} \right)}_{3}}COH,O{{H}^{-}}\] done clear
  View Solution play_arrow

• question_answer8)
  What is the product of the following reaction?
  A)
  2 - methyl -1 - pentene done clear
  B)
  4 - methyl -1 - pentene done clear
  C)
  2 - methyl - 2- propyloxirane done clear
  D)
  1 - pentene done clear
  View Solution play_arrow

• question_answer9)
  Product [B] in this reaction is:
  A)
                     done clear
  B)
  done clear
  C)
                         done clear
  D)
  done clear
  View Solution play_arrow

• question_answer10)
  Which of the following pairs of reactants is most effective in forming an enamine?
  A)
  \[C{{H}_{3}}C{{H}_{2}}\overset{O}{\mathop{\overset{||}{\mathop{C}}\,}}\,H+{{[{{(C{{H}_{3}})}_{2}}CH]}_{2}}NH\] done clear
  B)
  done clear
  C)
  \[{{(C{{H}_{3}})}_{3}}C\overset{O}{\mathop{\overset{||}{\mathop{C}}\,}}\,H+{{(C{{H}_{3}})}_{2}}NH\] done clear
  D)
  None of these form an enamine. done clear
  View Solution play_arrow

• question_answer11)
  In the reaction sequence \[2C{{H}_{3}}CHO\xrightarrow{O{{H}^{-}}}A\xrightarrow{\Delta }B;\] the product B is:
  A)
  \[C{{H}_{3}}-C{{H}_{2}}-C{{H}_{2}}-C{{H}_{2}}-OH\] done clear
  B)
  \[C{{H}_{3}}-CH=CH-CHO\] done clear
  C)
  \[C{{H}_{3}}-C{{H}_{2}}-C{{H}_{2}}-C{{H}_{3}}\] done clear
  D)
  \[C{{H}_{3}}-\overset{O}{\mathop{\overset{||}{\mathop{C}}\,}}\,-C{{H}_{3}}\] done clear
  View Solution play_arrow

• question_answer12)
  Which one of the following reactions will not result in the formation of carbon-carbon bond?
  A)
  Reimer-Tieman reaction done clear
  B)
  Friedel Craft's acylation done clear
  C)
  Wurtz reaction done clear
  D)
  Cannizzaro reaction done clear
  View Solution play_arrow

• question_answer13)
  Which is major product formed when acetone is heated with iodine and potassium hydroxide?
  A)
  lodoacetone       done clear
  B)
  Acetic acid done clear
  C)
  lodoform   done clear
  D)
  Acetophenone done clear
  View Solution play_arrow

• question_answer14)
  \[\xrightarrow{LAH}\left( C \right);\] product (C) of the reaction is:
  A)
              done clear
  B)
  done clear
  C)
                    done clear
  D)
  done clear
  View Solution play_arrow

• question_answer15)
  End product of the following sequence of reactions are:
  A)
  yellow ppt. of \[CH{{I}_{3}}\], done clear
  B)
  yellow ppt. of \[CH{{I}_{3}}\], done clear
  C)
  yellow ppt. of \[CH{{I}_{3}}\], done clear
  D)
  yellow ppt. of \[CH{{I}_{3}}\], done clear
  View Solution play_arrow

• question_answer16)

  Identify appropriate reagents for the above reaction:

  A)
  \[a=B{{r}_{2}}/CC{{l}_{4}},\]          \[b=aq.KOH\] done clear
  B)
  \[a=B{{r}_{2}}/{{H}^{+}},\]             \[b=aq.KOH\] done clear
  C)
  \[a=B{{r}_{2}}/{{H}^{+}},\]             \[b=alc.KOH\] done clear
  D)
  \[a=B{{r}_{2}}/H{{O}^{-}},\]          \[b=aq.KOH\] done clear
  View Solution play_arrow

• question_answer17)
  The starting compounds needed to make the following compound?
  A)
  benzaldehyde and 3-pentanone done clear
  B)
  acetophenone and 2-butanone done clear
  C)
  acetophenone and butanal done clear
  D)
  benzaldehyde and 2-pentanone done clear
  View Solution play_arrow

• question_answer18)
   X, most likely the compound X is
  A)
                          done clear
  B)
  done clear
  C)
                        done clear
  D)
  done clear
  View Solution play_arrow

• question_answer19)
  The reagents employed to carry the following transformation  
  A)
  \[LiAl{{H}_{4}},{{H}_{2}}S{{O}_{4}}/heat\] done clear
  B)
  \[PCC/C{{H}_{2}}C{{l}_{2}}\] followed by \[HI{{O}_{4}}\] done clear
  C)
  \[NaB{{H}_{4}}/C{{H}_{3}}OH\] followed by \[HI{{O}_{4}}\] done clear
  D)
  \[{{O}_{3}}\] followed by \[{{(C{{H}_{3}})}_{2}}S\] done clear
  View Solution play_arrow

• question_answer20)
  What is the product of the following reaction?
  A)
                         done clear
  B)
  done clear
  C)
                         done clear
  D)
  done clear
  View Solution play_arrow

• question_answer21)
  Arrange the following in order of decreasing acidity

  [A]        [B]   [C]

  A)
  C>A>B            done clear
  B)
  C>B>A done clear
  C)
  A>C>B            done clear
  D)
  A>B>C done clear
  View Solution play_arrow

• question_answer22)
  What is the product of the following reaction?
  A)
       done clear
  B)
  done clear
  C)
  done clear
  D)
  done clear
  View Solution play_arrow

• question_answer23)
  Identify Z in the sequence \[C{{H}_{3}}COON{{H}_{4}}\xrightarrow{\Delta }X\xrightarrow[\Delta ]{{{P}_{2}}{{O}_{5}}}Y\xrightarrow{{{H}_{2}}O/{{H}^{+}}}Z\]
  A)
  \[C{{H}_{3}}C{{H}_{2}}CON{{H}_{2}}\]       done clear
  B)
  \[C{{H}_{3}}CN\] done clear
  C)
  \[C{{H}_{3}}COOH\]                done clear
  D)
  \[{{(C{{H}_{3}}CO)}_{2}}O\] done clear
  View Solution play_arrow

• question_answer24)
  [A]; Product [A] of the reaction is:
  A)
  done clear
  B)
  done clear
  C)
  \[Ph-CH=CH-\overset{O}{\mathop{\overset{||}{\mathop{C}}\,}}\,-H\] done clear
  D)
  done clear
  View Solution play_arrow

• question_answer25)
  \[(X){{C}_{4}}{{H}_{7}}OCl\xrightarrow{N{{H}_{3}}}{{C}_{4}}{{H}_{9}}OH\] \[\xrightarrow[KOH]{B{{r}_{2}}}C{{H}_{3}}C{{H}_{2}}C{{H}_{2}}N{{H}_{2}};\] compound (X) is:
  A)
                    done clear
  B)
  done clear
  C)
    done clear
  D)
  done clear
  View Solution play_arrow

• question_answer26)
   Product. The product formed in the reaction is-
  A)
              done clear
  B)
  \[Me-\overset{O}{\mathop{\overset{||}{\mathop{C}}\,}}\,-\overset{O}{\mathop{\overset{||}{\mathop{C}}\,}}\,-Ph\] done clear
  C)
  \[Me-\underset{Ph}{\mathop{\underset{|}{\mathop{\overset{OH}{\mathop{\overset{|}{\mathop{C}}\,}}\,}}\,}}\,-COOH\] done clear
  D)
  \[Ph-\overset{O}{\mathop{\overset{||}{\mathop{C}}\,}}\,-\overset{O}{\mathop{\overset{||}{\mathop{C}}\,}}\,-O-Me\] done clear
  View Solution play_arrow

• question_answer27)
  Product (X) of the reaction is-
  A)
      done clear
  B)
  done clear
  C)
     done clear
  D)
  done clear
  View Solution play_arrow

• question_answer28)
  In a set of reactions, acetic acid yielded a product D. \[C{{H}_{3}}COOH\xrightarrow{SOC{{l}_{2}}}\left( A \right)\xrightarrow[AlC{{l}_{3}}]{Benzene}\left( B \right)\] \[\xrightarrow{HCN}(C)\xrightarrow{HOH}(D)\] The structure of [D] would be -
  A)
           done clear
  B)
  done clear
  C)
             done clear
  D)
  done clear
  View Solution play_arrow

• question_answer29)
  Calculate number of molecules of Grignard reagent consumed by 1 molecule of following compound. 
  A)
  5                      done clear
  B)
  2      done clear
  C)
  3                                  done clear
  D)
  1 done clear
  View Solution play_arrow

• question_answer30)
  Which of the following will not give butyl acetate when treated with 1-butanol
  A)
  \[C{{H}_{3}}-\overset{O}{\mathop{\overset{||}{\mathop{C}}\,}}\,-Cl\left( pyridene \right)\] done clear
  B)
  \[C{{H}_{3}}-\overset{O}{\mathop{\overset{||}{\mathop{C}}\,}}\,-OH\left( {{H}_{2}}S{{O}_{4}} \right)\] done clear
  C)
  \[C{{H}_{3}}-\overset{O}{\mathop{\overset{||}{\mathop{C}}\,}}\,-O-\overset{O}{\mathop{\overset{||}{\mathop{C}}\,}}\,-C{{H}_{3}}\left( pyridene \right)\] done clear
  D)
  \[C{{H}_{3}}-\overset{O}{\mathop{\overset{||}{\mathop{C}}\,}}\,-H\left( {{H}_{2}}S{{O}_{4}} \right)\] done clear
  View Solution play_arrow

• question_answer31)
  Tischenko reaction is a modification of:
  A)
  Aldol condensation done clear
  B)
  Claisen condensation done clear
  C)
  Cannizzaro reaction done clear
  D)
  Pinacol-pinacolon reaction done clear
  View Solution play_arrow

• question_answer32)
  Formaldehyde can be distinguished from acetaldehyde by the use of:
  A)
  Schiffs reagent   done clear
  B)
  Tollen's reagent done clear
  C)
  \[{{I}_{2}}\]/Alkali                    done clear
  D)
  Fehling's solution done clear
  View Solution play_arrow

• question_answer33)
  Clemmensen reduction of a ketone is carried out in the presence of:
  A)
  \[LiAl{{H}_{4}}\] done clear
  B)
  \[Zn-Hg\,with\,HCl\] done clear
  C)
  Glycol with KOH done clear
  D)
  \[{{H}_{2}}\] with Pt as catalyst done clear
  View Solution play_arrow

• question_answer34)
  Which of the following is the product of aldol condensation?
  A)
  done clear
  B)
  done clear
  C)
  done clear
  D)
  done clear
  View Solution play_arrow

• question_answer35)
  Cannizaro?s reaction is not given by:
  A)
  done clear
  B)
  done clear
  C)
  \[C{{H}_{3}}CHO\]                  done clear
  D)
  \[HCHO\]   done clear
  View Solution play_arrow

• question_answer36)
  
  A)
         done clear
  B)
  done clear
  C)
  done clear
  D)
    done clear
  View Solution play_arrow

• question_answer37)
  What is the product of the following reaction.
  A)
                         done clear
  B)
  done clear
  C)
                        done clear
  D)
  done clear
  View Solution play_arrow

• question_answer38)
  Compound 'A' (molecular formula \[{{C}_{3}}{{H}_{8}}O\]) is treated with acidified potassium dichromate to form a product 'B' (molecular formula \[{{C}_{3}}{{H}_{6}}O\]). 'B' forms a shining silver mirror on warming with ammonical silver nitrate. 'B' when treated with an aqueous solution of \[{{H}_{2}}NCONHN{{H}_{2}}.HCl\] and sodium acetate gives a product 'C'. Identify the structure of 'C'?
  A)
  \[C{{H}_{3}}C{{H}_{2}}CH=NNHCON{{H}_{2}}\] done clear
  B)
  \[C{{H}_{3}}-\underset{C{{H}_{3}}}{\mathop{\underset{|}{\mathop{C}}\,}}\,=NNHCON{{H}_{2}}\] done clear
  C)
  \[C{{H}_{3}}-\underset{C{{H}_{3}}}{\mathop{\underset{|}{\mathop{C}}\,}}\,=NCONHN{{H}_{2}}\] done clear
  D)
  \[C{{H}_{3}}C{{H}_{2}}CH=NCONHN{{H}_{2}}\] done clear
  View Solution play_arrow

• question_answer39)
  The most reactive compound towards formation of cyanohydrin on treatment with KCN followed by acidification is
  A)
  benzaldehyde done clear
  B)
  p-nitrobenzaldehyde done clear
  C)
  phenylacetaldehyde done clear
  D)
  p-hydroxybenzaldehyde done clear
  View Solution play_arrow

• question_answer40)
  An organic compound 'A' has the molecular formula \[{{C}_{3}}{{H}_{6}}O\]. It undergoes iodoform test. When staturated with \[HCl\] it gives 'B' of molecula formula \[{{C}_{9}}{{H}_{14}}O\]. 'A' and 'B' respectively are
  A)
  Propanal and mesitylene done clear
  B)
  Propanone and mesityl oxide done clear
  C)
  Propanone and 2,6-dimethyl-2,5-heptadien- 4-one done clear
  D)
  Propanone and mesitylene oxide done clear
  View Solution play_arrow

• question_answer41)
  What is D in the following sequence of reactions?
  A)
      done clear
  B)
  done clear
  C)
    done clear
  D)
  done clear
  View Solution play_arrow

• question_answer42)
  The major product in the above reaction is
  A)
  done clear
  B)
  done clear
  C)
  done clear
  D)
    done clear
  View Solution play_arrow

• question_answer43)
  Identify the missing reagent in the reaction given below
  A)
  Diethyl carbonate \[{{\left( EtO \right)}_{2}}C=O\] done clear
  B)
  Ethyl acetate \[C{{H}_{3}}COOEt\] done clear
  C)
  Ethyl formate \[HCOOEt\] done clear
  D)
  Diethyl oxalate \[Et.OOC.COOEt\] done clear
  View Solution play_arrow

• question_answer44)
  The final product of the following sequence of reactions is
  A)
  done clear
  B)
  done clear
  C)
  done clear
  D)
    done clear
  View Solution play_arrow

• question_answer45)
  Identify Z in the following reaction sequence. \[C{{H}_{3}}CHO\xrightarrow[Dil.{{H}_{2}}S{{O}_{4}}]{MnO_{4}^{-}}X\xrightarrow{SOC{{l}_{2}}}Y\xrightarrow[\Delta ]{C{{H}_{3}}COONa}Z\]
  A)
  \[C{{H}_{3}}COC{{H}_{2}}COONa\] done clear
  B)
  \[{{(C{{H}_{3}}CO)}_{2}}O\] done clear
  C)
  \[C{{H}_{3}}CO-O-COC{{H}_{2}}Cl\] done clear
  D)
  \[C{{H}_{3}}CO-OCOCHC{{l}_{2}}\] done clear
  View Solution play_arrow

• question_answer46)
  In the following sequence of reactions, what is D?    \[A\xrightarrow{SOC{{l}_{2}}}B\xrightarrow{Na{{N}_{3}}}C\xrightarrow{heat}D\]
  A)
  Primary amine done clear
  B)
  An amide done clear
  C)
  Phenyl isocyanate done clear
  D)
  A higher hydrocarbon done clear
  View Solution play_arrow

• question_answer47)
  Which one of the following compounds undergoes decarboxylation upon heating?
  A)
  done clear
  B)
    done clear
  C)
          done clear
  D)
  done clear
  View Solution play_arrow

• question_answer48)
  Which lactone is formed by heating the following hydroxy acid?
  A)
                   done clear
  B)
  done clear
  C)
                    done clear
  D)
  done clear
  View Solution play_arrow

• question_answer49)
  The correct product of the following sequence of reactions \[\xrightarrow[{{H}_{3}}{{O}^{+}}]{NaOH.{{H}_{2}}O,\Delta }\xrightarrow{\Delta }?\]
  A)
  4 - heptanone done clear
  B)
  4 - methyl -3 - hexanone done clear
  C)
  2 - ethyl pentanoic acid done clear
  D)
  2 - propyl butanoic acid done clear
  View Solution play_arrow

• question_answer50)
  The correct product of the following reactions  
  A)
  2, 2-dimethyl propane diol done clear
  B)
  2-methyl-1-propanol done clear
  C)
  2, 2-dimethyl propanedioic acid done clear
  D)
  2-methyl propanoic acid done clear
  View Solution play_arrow

• question_answer51)
  Arrange the following carbonyl compounds in decreasing order of their reactivity in nucleophilic addition reaction.
  A)
  (ii)>(iii)>(i)>(iv) done clear
  B)
  (ii)>(i)>(iv)>(iii) done clear
  C)
  (iii)>(ii)>(i)>(iv) done clear
  D)
  (iii)>(i)>(iv)>(ii) done clear
  View Solution play_arrow

• question_answer52)
    In the above reaction, product is:  
  A)
    done clear
  B)
      done clear
  C)
      done clear
  D)
      done clear
  View Solution play_arrow

• question_answer53)
  Correct order of reactivity of following compounds towards Grignard reagent?           
  A)
  I>II>III                         done clear
  B)
  II>I>III done clear
  C)
  II>III>I                         done clear
  D)
  I>III>II done clear
  View Solution play_arrow

• question_answer54)
  What is the final product (B) of this sequence?
  A)
  done clear
  B)
  done clear
  C)
    done clear
  D)
  done clear
  View Solution play_arrow

• question_answer55)
  1-Phenylethanol can be prepared by reaction of benzaldehyde with
  A)
  methyl bromide done clear
  B)
  ethyl iodide and magnesium done clear
  C)
  methyl bromide and aluminium bromide done clear
  D)
  methyl iodide and magnesium done clear
  View Solution play_arrow

• question_answer56)
  Oxidation of acetaldehyde with selenium dioxide produces
  A)
  ethanoicacid       done clear
  B)
  methanoic acid done clear
  C)
  glyoxal              done clear
  D)
  oxalic acid done clear
  View Solution play_arrow

• question_answer57)
  Which of the following will respond to Cannizzaro's reaction?
  A)
  2,2-Dimethylpropanal done clear
  B)
  Acetaldehyde done clear
  C)
  Propionaldehyde done clear
  D)
  Cinnamaldehyde done clear
  View Solution play_arrow

• question_answer58)
  If 3-hexanone is reacted with \[NaB{{H}_{4}}\] followed by hydrolysis with\[{{D}_{2}}O\], the product will be
  A)
  \[C{{H}_{3}}C{{H}_{2}}CH(OH)C{{H}_{2}}C{{H}_{2}}C{{H}_{3}}\] done clear
  B)
  \[C{{H}_{3}}C{{H}_{2}}CD\left( OH \right)C{{H}_{2}}C{{H}_{2}}C{{H}_{3}}\] done clear
  C)
  \[C{{H}_{3}}C{{H}_{2}}CH\left( OD \right)C{{H}_{2}}C{{H}_{2}}C{{H}_{3}}\] done clear
  D)
  \[C{{H}_{3}}C{{H}_{2}}CD\left( OD \right)C{{H}_{2}}C{{H}_{2}}C{{H}_{3}}\] done clear
  View Solution play_arrow

• question_answer59)
  Propanal on reaction with dilute \[NaOH\] forms
  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)
  \[C{{H}_{3}}C{{H}_{2}}C{{H}_{2}}CH(OH)C{{H}_{2}}CHO\] done clear
  D)
  \[C{{H}_{3}}C{{H}_{2}}CH(OH)CH{{(CH)}_{3}}CHO\] done clear
  View Solution play_arrow

• question_answer60)
  Which is not true about acetophenone?
  A)
  It reacts with 2, 4-dinitrophenylhydrazine to form 2,4-dinitrophenylhydrazone done clear
  B)
  It reacts with Tollen 's reagent to form silver mirror done clear
  C)
  It reacts with \[{{I}_{2}}/NaOH\] to form iodoform done clear
  D)
  On oxidation with alkaline \[KMn{{O}_{4}}\] followed by hydrolysis it gives benzoic acid done clear
  View Solution play_arrow

• question_answer61)
  The order of decreasing ease of reaction with ammonia is
  A)
  anhydrides, esters, ethers done clear
  B)
  anhydrides, ethers, esters done clear
  C)
  ethers, anhydrides, esters done clear
  D)
  esters, ethers, anhydrides done clear
  View Solution play_arrow

• question_answer62)
  \[C{{H}_{3}}C{{H}_{2}}COOH\xrightarrow[\operatorname{Red}\,P]{B{{r}_{2}}}X\xrightarrow{N{{H}_{3}}(alc.)}Y\] Y in the above reactions is
  A)
  lactic acid         done clear
  B)
  ethyiamine done clear
  C)
  propylamine      done clear
  D)
  alanine done clear
  View Solution play_arrow

• question_answer63)
  In the mechanism of Hoffinann reaction, which intermediate rearranges to alkyl isocyanate?
  A)
  Bromamide       done clear
  B)
  Nitrene done clear
  C)
  Nitroso                          done clear
  D)
  Amide done clear
  View Solution play_arrow

• question_answer64)
  A colourless liquid, at room temperature, reacts with soda-lime to form sodium salt of a carboxylic acid and ammonia gas. The liquid is
  A)
  propanoic acid                done clear
  B)
  formamide done clear
  C)
  propanamide     done clear
  D)
  methyl enthanoate   done clear
  View Solution play_arrow

• question_answer65)
  Which of the following on oxidation followed by hydrolysis gives pyruvic acid?
  A)
  Acetaldehyde cyanohydrin done clear
  B)
  Acetone cyanohydrin done clear
  C)
  Formaldehyde cyanohydrin done clear
  D)
  None of these done clear
  View Solution play_arrow

• question_answer66)
  Identify the correct order of boiling points of the following compounds:

  \[\underset{1}{\mathop{C{{H}_{3}}C{{H}_{2}}C{{H}_{2}}OH}}\,\]

  \[\underset{2}{\mathop{C{{H}_{3}}C{{H}_{2}}C{{H}_{2}}CHO}}\,\]

  \[\underset{3}{\mathop{C{{H}_{3}}C{{H}_{2}}C{{H}_{2}}COOH}}\,\]

  A)
  1>2>3      done clear
  B)
  3>1>2 done clear
  C)
  1>3>2                         done clear
  D)
  3>2>1 done clear
  View Solution play_arrow

• question_answer67)
  Carboxylic acids are more acidic than phenol and alcohol because of
  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
  View Solution play_arrow

• question_answer68)
  Which of the following compounds will react with \[NaHC{{O}_{3}}\] solution to give sodium salt and carbon dioxide?
  A)
  Acetic acid       done clear
  B)
  n-Hexanol done clear
  C)
  Phenol                           done clear
  D)
  Both [b] and [c] done clear
  View Solution play_arrow

• question_answer69)
  Which of the following acids has the smallest dissociation constant?
  A)
  \[C{{H}_{3}}CH\left( F \right)COOH\]     done clear
  B)
  \[FC{{H}_{2}}C{{H}_{2}}COOH\] done clear
  C)
  \[BrC{{H}_{2}}C{{H}_{2}}COOH\] done clear
  D)
  \[C{{H}_{3}}CH(Br)COOH\] done clear
  View Solution play_arrow

• question_answer70)
  Which of the following orders of relative strengths of acids is correct?
  A)
  \[FC{{H}_{2}}COOH>ClC{{H}_{2}}COOH>BrC{{H}_{2}}COOH\] done clear
  B)
  \[ClC{{H}_{2}}COOH>BrC{{H}_{2}}COOH>FC{{H}_{2}}COOH\] done clear
  C)
  \[BrC{{H}_{2}}COOH>ClC{{H}_{2}}COOH>FC{{H}_{2}}COOH\] done clear
  D)
  \[ClC{{H}_{2}}C{{O}_{2}}H>FC{{H}_{2}}COOH>BrC{{H}_{2}}COOH\] done clear
  View Solution play_arrow

• question_answer71)
  Acetic acid on heating in presence of \[{{P}_{2}}{{O}_{5}}\] gives
  A)
  acetic anhydride done clear
  B)
  acetylene done clear
  C)
  peracid              done clear
  D)
  no reaction done clear
  View Solution play_arrow

• question_answer72)
  Among the given compounds, the most susceptible to nucleophilic attack at the carbonyl group is
  A)
  \[MeCOCl\]       done clear
  B)
  \[MeCHO\] done clear
  C)
  \[MeCOOMe\]                done clear
  D)
  \[MeCOOCOMe\] done clear
  View Solution play_arrow

• question_answer73)
  Ethyl acetate is obtained when methylmagnesium iodide reacts with
  A)
  ethyl formate     done clear
  B)
  ethyl chloroformate done clear
  C)
  acetyl chloride                done clear
  D)
  carbon dioxide done clear
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• question_answer74)
  An ester is boiled with KOH. The product is cooled and acidified with concentrated\[HCl\]. A white crystalline acid separates. The ester is
  A)
  methyl acetate                done clear
  B)
  ethyl acetate done clear
  C)
  ethyl formate     done clear
  D)
  ethyl benzoate done clear
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• question_answer75)
  Hydrolsis of an ester gives a carboxylic acid which on Kolbe's electrolysis yields ethane. The ester is
  A)
  ethyl methanoate done clear
  B)
  methyl ethanoate done clear
  C)
  methyl methanoate         done clear
  D)
  methyl propanoate done clear
  View Solution play_arrow

• question_answer76)
  What is the missing reagent in the synthesis shown below
  A)
  bromocyclopentane done clear
  B)
  1,5- dibromo pentane done clear
  C)
  1,4-dibromo butane done clear
  D)
  1, 1- dibromo cyclopentane done clear
  View Solution play_arrow

• question_answer77)
  The correct product of the following sequence of reactions  \[{{(C{{H}_{3}})}_{2}}CHCOOH\text{ }\xrightarrow[(ii)\,{{H}_{2}}O]{(i)\,LiAl{{H}_{4}}}\,\,\,\xrightarrow{PB{{r}_{3}}}\] \[\xrightarrow[DMSO]{KCN}\,\,\,\,\xrightarrow[\Delta ]{{{H}_{2}}{{O}^{+}},\,{{H}^{+}}}\]
  A)
  \[{{\left( C{{H}_{3}} \right)}_{2}}CHCHBr.COOH\] done clear
  B)
  \[{{(C{{H}_{3}})}_{2}}CHC{{H}_{2}}COOH\] done clear
  C)
  \[{{\left( C{{H}_{3}} \right)}_{2}}CHC{{H}_{2}}C{{H}_{2}}N{{H}_{2}}\] done clear
  D)
  \[{{\left( C{{H}_{3}} \right)}_{2}}C=CHCOOH\] done clear
  View Solution play_arrow

• question_answer78)
  Carboxylic acid group does not give the usual addition and elimination reactions of aldehydes and ketones because
  A)
  \[O-H\] bond is more polar than  group done clear
  B)
  carboxylate ion gets ionized done clear
  C)
  carboxylate ion gets stabilised by resonance done clear
  D)
  it exists as \[-COOH\] and there is no carbonyl group done clear
  View Solution play_arrow

• question_answer79)
  Which one of the following orders of acid strength is correct?
  A)
  \[RCOOH>HOH>ROH>HC\equiv CH\] done clear
  B)
  \[RCOOH>HOH>HC\equiv CH>ROH\] done clear
  C)
  \[RCOOH>HC\equiv CH>HOH>ROH\] done clear
  D)
  \[RCOOH>ROH>HOH>HC\equiv CH\] done clear
  View Solution play_arrow

• question_answer80)
  Which of the following is incorrect?
  A)
  \[FeC{{l}_{3}}\] is used in detection of phenols. done clear
  B)
  Fehling solution is used in detection of glucose. done clear
  C)
  Tollen's reagent is used in detection of unsaturation. done clear
  D)
  \[NaHS{{O}_{3}}\] is used in detection of carbonyl compounds. done clear
  View Solution play_arrow

• question_answer81)
  \[{{(C{{H}_{3}})}_{2}}CO\xrightarrow[(HCl)]{NaCN}A\xrightarrow[\Delta ]{{{H}_{3}}{{O}^{+}}}B\] In the above sequence of reactions A and B are
  A)
  \[{{(C{{H}_{3}})}_{2}}C(OH)CN,{{(C{{H}_{3}})}_{2}}C(OH)COOH\] done clear
  B)
  \[{{(C{{H}_{3}})}_{2}}C(OH)CN,{{(C{{H}_{3}})}_{2}}C{{(OH)}_{2}}\] done clear
  C)
  \[{{(C{{H}_{3}})}_{2}}C(OH)CN,{{(C{{H}_{3}})}_{2}}CHCOOH\] done clear
  D)
  \[{{(C{{H}_{3}})}_{2}}C(OH)CN,{{(C{{H}_{3}})}_{2}}C=O\] done clear
  View Solution play_arrow

• question_answer82)
  Acetophenone when reacted with a base, \[{{C}_{2}}{{H}_{5}}ONa,\] yields a stable compound which has the structure.
  A)
  done clear
  B)
  done clear
  C)
  done clear
  D)
  done clear
  View Solution play_arrow

• question_answer83)
  In Cannizzaro reaction given below \[2PhCHO\xrightarrow{:O{{H}^{-}}}PhC{{H}_{2}}OH+PhC\overset{..}{\mathop{O}}\,_{2}^{-}\]  the slowest step is:
  A)
  the transfer of proton to the carbonyl group done clear
  B)
  the abstraction of proton from the carboxylic group done clear
  C)
  the deprotonation of \[PhC{{H}_{2}}OH\] done clear
  D)
  the attack of: \[\overline{O}H\] at the carboxyl group done clear
  View Solution play_arrow

• question_answer84)
  In the above sequence of reaction X and Y are respectively
  A)
  \[{{H}_{2}}/Pt;B{{r}_{2}}\] done clear
  B)
  \[KMn{{O}_{4}};{{H}_{2}}/Pt\] done clear
  C)
  \[KMn{{O}_{4}}\left( aq \right);HI/P\] done clear
  D)
  \[N{{H}_{2}}-N{{H}_{2}}/KOH,HI/P\] done clear
  View Solution play_arrow

• question_answer85)
  Consider the following transformations: \[C{{H}_{3}}COOH\xrightarrow{CaC{{O}_{3}}}A\xrightarrow{heat}B\xrightarrow[NaOH]{{{I}_{2}}}C\] The molecular formula of C is
  A)
  \[C{{H}_{3}}-\underset{I}{\overset{OH}{\mathop{\underset{|}{\overset{|}{\mathop{C}}}\,}}}\,-C{{H}_{3}}\]    done clear
  B)
  \[IC{{H}_{2}}-COC{{H}_{3}}\] done clear
  C)
  \[CH{{I}_{3}}\]                        done clear
  D)
  \[C{{H}_{3}}I\] done clear
  View Solution play_arrow

• question_answer86)
  Silver benzoate will react with bromine in \[CC{{l}_{4}}\] to form:
  A)
                       done clear
  B)
  done clear
  C)
               done clear
  D)
  done clear
  View Solution play_arrow

• question_answer87)
  The compound that undergoes decarboxylation most readily under mild condition is
  A)
  done clear
  B)
  done clear
  C)
              done clear
  D)
  done clear
  View Solution play_arrow

• question_answer88)
  Which of the following reaction can produce \[R-CO-Ar?\]
  A)
  \[ArCOCl+H-Ar\xrightarrow{AlC{{l}_{3}}}\] done clear
  B)
  \[RCOCl+ArMgX\xrightarrow{{}}\] done clear
  C)
  \[ArCOCl+RMgX\xrightarrow{\text{ }}\] done clear
  D)
  \[RCOCl+H-Ar\xrightarrow{Alc{{l}_{3}}}\] done clear
  View Solution play_arrow

• question_answer89)
  The end product (C) in the following sequence of reactions is \[HC\equiv CH\xrightarrow[20(percent){{H}_{2}}S{{O}_{4}}]{1(percent)HgS{{O}_{4}}}A\xrightarrow[{{H}_{2}}O]{C{{H}_{3}}MgX}B\xrightarrow{(O)}(C)\]
  A)
  acetic acid        done clear
  B)
  isopropyi alcohol done clear
  C)
  acetone             done clear
  D)
  ethanol done clear
  View Solution play_arrow

• question_answer90)
  Predict the product 'B' in the sequence of reactions \[HC\equiv CH\xrightarrow[(percent) HgS{{O}_{4}}]{30(percent){{H}_{2}}S{{O}_{4}}}A\xrightarrow[{}]{NaOH}B\]
  A)
  \[C{{H}_{3}}COONa\] done clear
  B)
  \[C{{H}_{3}}COOH\] done clear
  C)
  \[C{{H}_{3}}CHO\] done clear
  D)
  \[C{{H}_{3}}-\underset{OH}{\mathop{\underset{|}{\mathop{C}}\,}}\,H-C{{H}_{2}}-CHO\] done clear
  View Solution play_arrow

• question_answer91)
  A substance \[{{C}_{4}}{{H}_{10}}O\] yields on oxidation a compound, \[{{C}_{4}}{{H}_{8}}O\] which gives an oxime and a positive iodoform test. The original substance on treatment with cone. \[{{H}_{2}}S{{O}_{4}}\] gives \[{{C}_{2}}{{H}_{8}}\] The structure of the compound is
  A)
  \[C{{H}_{3}}C{{H}_{2}}C{{H}_{2}}C{{H}_{2}}OH\] done clear
  B)
  \[C{{H}_{3}}CHOHC{{H}_{2}}C{{H}_{3}}\] done clear
  C)
  \[{{\left( C{{H}_{3}} \right)}_{3}}COH\] done clear
  D)
  \[C{{H}_{3}}C{{H}_{2}}-O-C{{H}_{2}}C{{H}_{3}}\] done clear
  View Solution play_arrow

• question_answer92)
  Which of following compound is hemiacetal?
  A)
                     done clear
  B)
  done clear
  C)
                        done clear
  D)
  All of these done clear
  View Solution play_arrow

• question_answer93)
  reactant [A] in this reaction is:
  A)
              done clear
  B)
  done clear
  C)
  done clear
  D)
  both [b] and [c] done clear
  View Solution play_arrow

• question_answer94)
  Which of following can be used as a catalyst in the above reaction?
  A)
  \[C{{l}^{-}}\]                          done clear
  B)
  \[C{{H}_{3}}-\overset{O}{\mathop{\overset{||}{\mathop{C}}\,}}\,-{{O}^{-}}\] done clear
  C)
  \[Et{{O}^{-}}\]                        done clear
  D)
  \[HSO_{4}^{-}\] done clear
  View Solution play_arrow

• question_answer95)
  Which of the following reagent(s) used for the conversion?
  A)
  \[glycol/LiAl{{H}_{4}}/{{H}_{3}}{{O}^{+}}\] done clear
  B)
  \[glycol/NaH/{{H}_{3}}{{O}^{+}}\] done clear
  C)
  \[LiAl{{H}_{4}}\] done clear
  D)
  \[NaB{{H}_{4}}\] done clear
  View Solution play_arrow

• question_answer96)
  Among the following the order of reactivity towards nucleophilic addition is
  A)
  \[C{{H}_{3}}CHO>C{{H}_{3}}COC{{H}_{3}}>HCHO\] done clear
  B)
  \[HCHO>C{{H}_{3}}CHO>C{{H}_{3}}COC{{H}_{3}}\] done clear
  C)
  \[C{{H}_{3}}CHO>HCHO>C{{H}_{3}}COC{{H}_{3}}\] done clear
  D)
  \[C{{H}_{3}}COC{{H}_{3}}>C{{H}_{3}}CHO>HCHO\] done clear
  View Solution play_arrow

• question_answer97)
  The reaction, \[C{{H}_{3}}CHO\xrightarrow{Zn(Hg)/Conc.HCl[H]}C{{H}_{3}}C{{H}_{3}}\] is
  A)
  Cannizaro's reaction done clear
  B)
  Rosenmund reduction done clear
  C)
  Wolf-Kishner reduction done clear
  D)
  Clemmenson reduction done clear
  View Solution play_arrow

• question_answer98)
  Tollen's reagent and Fehling solutions are used to distinguish between
  A)
  acids and alcohols done clear
  B)
  alkanes and alcohols done clear
  C)
  ketones and aldehydes done clear
  D)
  n-alkanes and branched alkanes done clear
  View Solution play_arrow

• question_answer99)
  In the presence of a small amount of phosphorous, aliphatic carboxylic acids react with chlorine or bromine to yield a compound in which \[\alpha \]-hydrogen has been replaced by halogen. This reaction is known as:
  A)
  Wolff- Kishner reaction done clear
  B)
  Rosenmund reaction done clear
  C)
  Etard reaction done clear
  D)
  Hell - Volhard - Zelinsky reaction done clear
  View Solution play_arrow

• question_answer100)
  Phthalic acid reacts with resorcinol in the presence of concentrated \[{{H}_{2}}S{{O}_{4}}\] to give:
  A)
  Phenolphthalein              done clear
  B)
  Alizarin done clear
  C)
  Coumarin         done clear
  D)
  Fluorescein done clear
  View Solution play_arrow