Aldehydes and Ketones Mains

ALDEHYDES AND KETONES 1.

The major products in the following reaction is

1) 2.

2)

3)

4)

How many oxime(s) formed if the smallest ketone and its homologues ketone are reacted with NH2OH.HCl 1) 1

2) 2

3) 3

4) 4 OH

O H

CH3

1) "X" moles of CH3MgBr 2)H3O

+

OH

OH

3.

One mole

Find the minimum value of “X” to archive the above reaction 1) 1 4.

2) 2

3) 3

4) 4

Maximum hydration takes place that of O

O

O

O CH3 CH C CH3

1) CF3 C CF3

2)

CH3 C CH3

3)

CI

4)

C6H5CC6H5

5.

O

1) HO

O

3) HO 6.

O

Hydrolysis product of

O

is:

OH

H

H O H

2) O

OH

O

4) HO

O

CH3 OH

Enolisation is maximum in case of O

O

O O

O

1)

2)

3)

4)

C6H5CC6H5

7. H3C

OH

1) H3C O

OH

OH

2) H3C OH CH3

8.

HO

O

3) 4) End product in the following sequence of reaction is

O

1)

2)

9.

3)

is formed by intramolecular aldol condensation of O

O

1) CH3 CCH2CH2CH2CH2CH O

3) 10.

4)

CHCH2CH2CH2CH2CH2CH

2)

CHCH2CH2CH2CH2CH

O

CH3CCH2CH2CH2CCH3

O

O

4)

O

O

CH 3CH 2CHO    1) dil2). NaOH 

Major product formed in the above reaction is CH3

1)

CH3CH2CH

CHCH2CHO

2)

CH3CH2CH=CCHO CH3

CH3CH2CHCH2CH2CHO

3)

OH

CH3CH2CHCHCHO

4)

OH

11. X and Y are respectively D

O D

C

O-

, D

C

1) C

C

O-

, D

C

2)

O-

, D

C

D

OH

C

4)

D

OH

H

H

O

3)

O-

, D

C

OH

H

Which is the best hydride donor in Cannizzaro reaction (assume R is Phenyl)? H | 1) R  C  O  | OH

13.

D

D

O

12.

OH

D

H

D

O

OH | A. CH 3  C  CN | CH 3 OH | CH  C  CN B. 3 | H

H | 2) R  C  O  | O

3) RCOOH

ˆ‡ˆKˆ1ˆ†

O || CH 3  C  CH 3  HCN

ˆ‡ˆKˆ2ˆ†

O || CH 3  C  H  HCN

RC  O | 4) H

Relation between K1 and K 2 is 1) K1  K 2

2) K1  K 2

3) K 2  K1

4) unpredictable

    ii  " y " moles NaNH5 2 i " x " moles PCl

CH 3  C  C  CH 3

14.

, the sum, x + y is 1) 2

15.

16.

17.

18. 19.

2) 3

3) 4

4) 5

Which one of the following produces an acetal? 1) It is the condensation product from 2 molecules of aldehyde. 2) It is the condensation product from 2 molecules of ketone. 3) It is the condensation product from 2 molecules of alcohol. 4) It is the product of addition of R-OH to O in acidic medium The reduction of C6 H 5CH =CHCHO with NaBH 4 yields majorly 1) C6H5CH2CH2CH2OH 2) C6H5CH=CHCH2OH 3) C6H5CH2CH2CHO 4) C6H5CH2CHOHCH3  - hydroxy carbonyl compound is obtained by the action of dil.NaOH on 1) (CH 3 )3 C.CHO 2) C6 H 5CHO 3) CH 3CHO 4) HCHO The high potency sweetener among the following 1) Aspartame 2) Saccarin 3) Sucrolose 4) Alitame The end product of the following sequence of reaction is

CN

COCH3

COOH

COCH3

1) 20.

21. 22.

2)

3)

4)

The following is not a food preservative 1) Sodium benzoate

2) salt of sorbic acid

3) sodium stearate

4) salt of propanoic acid

Urotropine is obtained when 1) urea reacts with formamide 2) urea reacts with ammonia 3) Methanal reacts with ammonia 4) acetone reacts with ammonia What are A, B and C in the following?

O

OH

in all cases

1)

in all cases

2)

OH in all cases

3) A;

4) 23.

OH

OH

O

B;

C;

Which of the following reagents is best reagent used for the conversion shown below?

24.

1) 1.NaBH 4 / 2. D3O 

2) 1.NaBD4 / 2. H 3O 

3) 1.LiAlH 4 / 2. D3O 

4) 1.LiAlH 4 / 2. H 3O 

CH 3  C  CH 

HgSO4 dil . H 2 SO4

CH 3  C  CH 

 1 BH 3 .THF  2  H 2O2 / HO 

 A  B

Product (A) and (B) is differentiated by : 1) 2-4-DNP 25.

2) NaOI

The final product of the following sequence of reaction is

O

O

1) CH3OCCH2CH2CH2CH2OH O

26. 27. 28. 29.

4) NaHSO3

3) Lucas reagent

2) CH3CCH2CH2CH2CH2OH O

O

3) HCCH2CH2CH2CH2OH 4) HCCH2CH2CH2CH The substance used in the birth control pills is 1) Tetracycline 2) Sulphadiazine 3)Novestrol 4) Penicillin Acetylation of the two -OH groups of morphine with acetic anhydride gives 1) codeine 2) heroin 3) cocaine 4) quinine The drug used as an anti depressant is 1) luminal 2) phenalzine 3) mescaline 4) sulphadiazine The IUPAC name of the insectiside lindane is 1) dichlorodiphenyltrichloroethane 2) benzene hexachloride 3) hexachloran 4) 1,2,3,4,5,6-hexachlorocyclohexane

30.

Penicillin G contains 1) phenyl group 2) Benzyl group

3) Benzo group

4) Benzal group