12 Chemistry Unit-18 Carbonyl Compounds

25 Questions | Total Attempts: 462

SettingsSettingsSettings
Please wait...
Chemistry Quizzes & Trivia

Questions and Answers
  • 1. 
    P { margin-bottom: 0.08in; } Schiffs reagent gives pink colour with a) acetone                   b) acetaldehyde c) ethyl alcohol          d) methy acetate
    • A. 

      Option 1

    • B. 

      Option 2

    • C. 

      Option 3

    • D. 

      Option 4

  • 2. 
    P{margin-bottom:0.08in;} Isopropyl alcohol vapours with air over silver catalyst at 520 K give a) tert.butyl alcohol            b) acetaldehyde c) acetone                           d) 2-porpanol
    • A. 

      Option 1

    • B. 

      Option 2

    • C. 

      Option 3

    • D. 

      Option 4

  • 3. 
    P { margin-bottom: 0.08in; } Methyl ketones are usually characterised by a) the Fehling's solution            b) the iodoform test c) the Schiff's test                     d) the Tollen's regent
    • A. 

      Option 1

    • B. 

      Option 2

    • C. 

      Option 3

    • D. 

      Option 4

  • 4. 
    P{margin-bottom:0.08in;} P{margin-bottom:0.08in;} Formaldehyde polymerises to give a) paraldehyde                b) paraformaldehyde c) formalin                       d) formic acid
    • A. 

      Option 1

    • B. 

      Option 2

    • C. 

      Option 3

    • D. 

      Option 4

  • 5. 
    P{margin-bottom:0.08in;} Tollens's reagent is a) ammonaical cuprous chloride    b) ammoniacal cuprous oxide c) ammoniacal silver nitrate   d) ammoniacal silver chloride
    • A. 

      Option 1

    • B. 

      Option 2

    • C. 

      Option 3

    • D. 

      Option 4

  • 6. 
    P{margin-bottom:0.08in;} When acetaldehyde is heated with Fehling solution, it gives a precipitate of a) Cu2O         b) CuO      c) CuO + Cu2O        c) Cu
    • A. 

      Option 1

    • B. 

      Option 2

    • C. 

      Option 3

    • D. 

      Option 4

  • 7. 
    P { margin-bottom: 0.08in; } The compound that does not undergo Cannizzaro reaction is a) formaldehyde           b) acetaldehyde c) benzaldehyde               d) trimethyl acetaldehyde
    • A. 

      Option 1

    • B. 

      Option 2

    • C. 

      Option 3

    • D. 

      Option 4

  • 8. 
    P{margin-bottom:0.08in;} The formation of cyanohydrin form a ketone is an example of a) electrophilic addition       b) nucleophilic addition c) nucleophilic substitution   d) electrophilic substitution
    • A. 

      Option 1

    • B. 

      Option 2

    • C. 

      Option 3

    • D. 

      Option 4

  • 9. 
    P{margin-bottom:0.08in;} Hydrogenation of benzoyl chloride in the presence of Pd on BaSO4 gives a) phenol                 b) benzoic acid c) bezyl alcohol       d) benzaldehyde
    • A. 

      Option 1

    • B. 

      Option 2

    • C. 

      Option 3

    • D. 

      Option 4

  • 10. 
    P { margin-bottom: 0.08in; } From which of the following, tertiary butyl alcohol is obtained by the action of methyl magnesium iodide ? a) HCHO   b) CH3CHO   c) CH3COCH3    d) CO2
    • A. 

      Option 1

    • B. 

      Option 2

    • C. 

      Option 3

    • D. 

      Option 4

  • 11. 
    P { margin-bottom: 0.08in; } P { margin-bottom: 0.08in; } P { margin-bottom: 0.08in; } P { margin-bottom: 0.08in; } During reduction of aldehydes with hydrazine and C2H5ONa the product formed is a) R-CH=N-NH2             b) R-C≡N c) R-C-NH2                    d) R-CH3               ⃦              O
    • A. 

      Option 1

    • B. 

      Option 2

    • C. 

      Option 3

    • D. 

      Option 4

  • 12. 
    P{margin-bottom:0.08in;} Aldol is a) 2-hydroxy butanol         b) 3-hydroxy butanol c) 3-hydroxy butanal         d) 2-hydroxy butanal
    • A. 

      Option 1

    • B. 

      Option 2

    • C. 

      Option 3

    • D. 

      Option 4

  • 13. 
    P { margin-bottom: 0.08in; } In the reducation of acetaldehyde using LiAlH4 the hydride ion acts as a) electrophile                b) nucleophile c) both (a) and (b)         d) a free radical
    • A. 

      Option 1

    • B. 

      Option 2

    • C. 

      Option 3

    • D. 

      Option 4

  • 14. 
    Which of the following statement is wrong ? a) 2-pentanone and 3-pentanone are position isomers b) aqueous solution of formaldehyde is known as formalin P { margin-bottom: 0.08in; } c) aldehydes and ketones undergo nucleophilic substitution d) aldehydes act as reducing agents P{margin-bottom:0.08in;}
    • A. 

      Option 1

    • B. 

      Option 2

    • C. 

      Option 3

    • D. 

      Option 4

  • 15. 
    P { margin-bottom: 0.08in; } A cynohydrin of a compound X on hydrolysis gives lactic acid. The X is a)   HCHO         b)    CH3CHO  c)  (CH3)2CO    d)   C6H5CH2CHO
    • A. 

      Option 1

    • B. 

      Option 2

    • C. 

      Option 3

    • D. 

      Option 4

  • 16. 
    P{margin-bottom:0.08in;} The IUPAC name of CH3-C=CH-C-CH3 is                                                                             │                  ‖                                                                             CH3   O a) 4-methylpent-3-en-2-one   b) 2-methylpent-3-en-2-one c) 3-methylpent-2-en-1-one   d) None of these
    • A. 

      Option 1

    • B. 

      Option 2

    • C. 

      Option 3

    • D. 

      Option 4

  • 17. 
    P{margin-bottom:0.08in;} P{margin-bottom:0.08in;} Which of the following does not give idoform test ? a) acetopehenone     b) benzophenone P{margin-bottom:0.08in;} P{margin-bottom:0.08in;} c) CH3-CHOH       d) CH3-CH-CH2-CH2-CH3                         │                                                     ∣                        CH3                          OH
    • A. 

      Option 1

    • B. 

      Option 2

    • C. 

      Option 3

    • D. 

      Option 4

  • 18. 
    P { margin-bottom: 0.08in; } The compound which does not reduce Fehling solution is a) formaldehyde               b) acetaldehyde c) benzaldehyde                d) propionaldehyde
    • A. 

      Option 1

    • B. 

      Option 2

    • C. 

      Option 3

    • D. 

      Option 4

  • 19. 
    P { margin-bottom: 0.08in; } CH3COCH3 + conc H2SO4    The product is  a)  mesitylene                          b)   mesityl oxide  c)   phorone                              d)  paraldehyde
    • A. 

      Option 1

    • B. 

      Option 2

    • C. 

      Option 3

    • D. 

      Option 4

  • 20. 
    P { margin-bottom: 0.08in; } which compound on strong oxidation gives propionic acid ? a)    CH3-CH-CH3           b)    CH3-CO-CH3                               │                              OH c)                 CH3                      d) CH3-CH2-CH2-OH                                         │                       CH3 -C-OH                                         │                          CH3
    • A. 

      Option 1

    • B. 

      Option 2

    • C. 

      Option 3

    • D. 

      Option 4

  • 21. 
    P { margin-bottom: 0.08in; } The compound used in the preparation of the tranquilizer, sulphonal is a) acetone                         b) benzaldehyde c) isopropyl alcohol          d) phenyl benzote
    • A. 

      Option 1

    • B. 

      Option 2

    • C. 

      Option 3

    • D. 

      Option 4

  • 22. 
    P { margin-bottom: 0.08in; } Calcium acetate + calcium benzoate   ⟶ gives a) bezophenone                           b) benzaldehyde c) acetophenone                          d) phenyl benzoate
    • A. 

      Option 1

    • B. 

      Option 2

    • C. 

      Option 3

    • D. 

      Option 4

  • 23. 
    P { margin-bottom: 0.08in; } Bakelite is a product of reaction between a) formaldehyde and NaOH       b) phenol and methanal c) aniline and NaOH                    d) phenol and chloroform
    • A. 

      Option 1

    • B. 

      Option 2

    • C. 

      Option 3

    • D. 

      Option 4

  • 24. 
    P{margin-bottom:0.08in;}P{margin-bottom:0.08in;}The chain isomer of 2-methyl-poropanal is
    • A. 

      2-butanone

    • B. 

      Butanal

    • C. 

      2-methy propanol

    • D. 

      Bute-3-ene-2-ol

  • 25. 
    P { margin-bottom: 0.08in; }Which of the following compounds is oxidised togive ethyl methyl ketone ?
    • A. 

      2-propanol

    • B. 

      2-pentanone

    • C. 

      1-butanol

    • D. 

      2-butanol