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Carbonyl Compounds Model Question Paper

12th Standard

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Chemistry

Time : 00:45:00 Hrs
Total Marks : 35
    5 x 1 = 5
  1. The formation of cyanohydrin from acetone is an example of _______.

    (a)

    nucleophilic substitution

    (b)

    electrophilic substitution

    (c)

    electrophilic addition

    (d)

    Nucleophilic addition

  2. Reaction of acetone with one of the following reagents involves nucleophilic addition followed by elimination of water. The reagent is _______.

    (a)

    Grignard reagent

    (b)

    Sn / HCl

    (c)

    hydrazine in presence of slightly acidic solution

    (d)

    hydrocyanic acid

  3. \({ CH }_{ 2 }={ CH }_{ 2 }\overset { i){ O }_{ 3 } }{ \underset { zn/{ H }_{ 2 }O }{ \longrightarrow } } X\overset { { NH }_{ 3 } }{ \longrightarrow } Y \ 'Y'\) is _______.

    (a)

    Formaldelyde

    (b)

    di acetone ammonia

    (c)

    hexamethylene tetraamine

    (d)

    oxime

  4. Predict the product Z in the following series of reactions Ethanoic acid \(\overset { { PCI }_{ 5 } }{ \longrightarrow } X\overset { { C }_{ 6 }{ H }_{ 6 } }{ \underset { Anhydrous \ AlCI }-_{3}{ \longrightarrow } } Y\overset { 1){ CH }_{ 3 }MgBr }{ \underset { II){ H }_{ 3 }{ O }^{ + } }{ \longrightarrow } } Z.\)

    (a)

    (CH3)2 C(OH)C6H5

    (b)

    CH3CH(OH)C6H5

    (c)

    CH3CH(OH)CH2- CH3

    (d)

  5. Which of the following represents the correct order of acidity in the given compounds

    (a)

    FCH2COOH > CH3COOH > BrCH2COOH > ClCH2COOH

    (b)

    FCH2COOH > ClCH2COOH > BrCH2COOH > CH3COOH

    (c)

    CH3COOH > ClCH2COOH > FCH2COOH > Br-CH2COOH

    (d)

    Cl CH2COOH > CH3COOH > BrCH2COOH > ICH2COOH

  6. 3 x 2 = 6
  7. Identify X and Y.
    \({ CH }_{ 3 }CO{ CH }_{ 2 }{ CH }_{ 2 }COO{ C }_{ 2 }{ H }_{ 5 }\overset { { CH }_{ 3 }MgBr }{ \longrightarrow } X\overset { { H }_{ 3 }{ O }^{ + } }{ \longrightarrow } Y\)

  8. Derive the relation between f and R for a spherical mirror.

  9. What are the Cartesian sign conventions for a spherical mirror?

  10. 3 x 3 = 9
  11. How will you convert benzaldehyde into the following compounds?
    (i) benzophenone
    (ii) benzoic acid
    (iii) α-hydroxyphenylaceticacid.

  12. What is the action of HCN on
    (i) propanone
    (ii) 2,4-dichlorobenzaldehyde
    iii) ethanal

  13. A carbonyl compound A having molecular formula C5H10O forms crystalline precipitate with sodium bisulphate and gives positive iodoform test. A does not reduce Fehling solution. Identify A.

  14. 3 x 5 = 15
  15. Write the structure of the major product of the aldol condensation of benzaldehyde with acetone.

  16. Complete the following reaction
    \({ CH }_{ 3 }-{ CH }_{ 2 }-{ CH }_{ 2 }-\underset { \overset { || }{ O } }{ C } -{ CH }_{ 3 }\overset { HO-{ CH }_{ 2 }-{ CH }_{ 2 }-OH }{ \underset { { dry }{ HCl} }{ \longrightarrow } } ?\)

  17. Identify A, B and C

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