Chemical Reactions of Aldehydes and Ketones
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CHXII12:ALDEHYDES KETONES AND CARBOXYLIC ACIDS

323518 Reaction of carbonyl compound with one of the following reagents involves nucleophilic addition followed by elimination of water. The reagent is:

1 A Grignard reagent, RMgX
2 Hydrazine in presence of feebly acidic solution
3 Hydrocyanic acid, HCN
4 Sodium hydrogen sulphite, NaHSO3
CHXII12:ALDEHYDES KETONES AND CARBOXYLIC ACIDS

323519 CH3−CHO+H2 N−OH⟶A. The type of isomerism shown by compound ' A ' is

1 Geometrical isomeism
2 Optical isomerism
3 Both 1 & 2
4 Does not exhibit any isomerism
CHXII12:ALDEHYDES KETONES AND CARBOXYLIC ACIDS

323520 Assertion :
Rate of addition of HCN on carbonyl compounds increases in presence of NaCN.
Reason :
Reaction involves the addition of CN− as the rate determining step.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
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CHXII12:ALDEHYDES KETONES AND CARBOXYLIC ACIDS

323517 supporting img
In the above reaction product formed is X. The ratio of possible number of stereoisomers of the product to the sterocenters in X is ____ .

1 2.67
2 0.81
3 3.9
4 6.8
CHXII12:ALDEHYDES KETONES AND CARBOXYLIC ACIDS

323518 Reaction of carbonyl compound with one of the following reagents involves nucleophilic addition followed by elimination of water. The reagent is:

1 A Grignard reagent, RMgX
2 Hydrazine in presence of feebly acidic solution
3 Hydrocyanic acid, HCN
4 Sodium hydrogen sulphite, NaHSO3
CHXII12:ALDEHYDES KETONES AND CARBOXYLIC ACIDS

323519 CH3−CHO+H2 N−OH⟶A. The type of isomerism shown by compound ' A ' is

1 Geometrical isomeism
2 Optical isomerism
3 Both 1 & 2
4 Does not exhibit any isomerism
CHXII12:ALDEHYDES KETONES AND CARBOXYLIC ACIDS

323520 Assertion :
Rate of addition of HCN on carbonyl compounds increases in presence of NaCN.
Reason :
Reaction involves the addition of CN− as the rate determining step.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
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CHXII12:ALDEHYDES KETONES AND CARBOXYLIC ACIDS

323517 supporting img
In the above reaction product formed is X. The ratio of possible number of stereoisomers of the product to the sterocenters in X is ____ .

1 2.67
2 0.81
3 3.9
4 6.8
CHXII12:ALDEHYDES KETONES AND CARBOXYLIC ACIDS

323518 Reaction of carbonyl compound with one of the following reagents involves nucleophilic addition followed by elimination of water. The reagent is:

1 A Grignard reagent, RMgX
2 Hydrazine in presence of feebly acidic solution
3 Hydrocyanic acid, HCN
4 Sodium hydrogen sulphite, NaHSO3
CHXII12:ALDEHYDES KETONES AND CARBOXYLIC ACIDS

323519 CH3−CHO+H2 N−OH⟶A. The type of isomerism shown by compound ' A ' is

1 Geometrical isomeism
2 Optical isomerism
3 Both 1 & 2
4 Does not exhibit any isomerism
CHXII12:ALDEHYDES KETONES AND CARBOXYLIC ACIDS

323520 Assertion :
Rate of addition of HCN on carbonyl compounds increases in presence of NaCN.
Reason :
Reaction involves the addition of CN− as the rate determining step.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
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CHXII12:ALDEHYDES KETONES AND CARBOXYLIC ACIDS

323517 supporting img
In the above reaction product formed is X. The ratio of possible number of stereoisomers of the product to the sterocenters in X is ____ .

1 2.67
2 0.81
3 3.9
4 6.8
CHXII12:ALDEHYDES KETONES AND CARBOXYLIC ACIDS

323518 Reaction of carbonyl compound with one of the following reagents involves nucleophilic addition followed by elimination of water. The reagent is:

1 A Grignard reagent, RMgX
2 Hydrazine in presence of feebly acidic solution
3 Hydrocyanic acid, HCN
4 Sodium hydrogen sulphite, NaHSO3
CHXII12:ALDEHYDES KETONES AND CARBOXYLIC ACIDS

323519 CH3−CHO+H2 N−OH⟶A. The type of isomerism shown by compound ' A ' is

1 Geometrical isomeism
2 Optical isomerism
3 Both 1 & 2
4 Does not exhibit any isomerism
CHXII12:ALDEHYDES KETONES AND CARBOXYLIC ACIDS

323520 Assertion :
Rate of addition of HCN on carbonyl compounds increases in presence of NaCN.
Reason :
Reaction involves the addition of CN− as the rate determining step.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
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