323517 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
Explanation:
Stereocentres \({\mathrm{=3}}\) Possible stereoisomers \({\mathrm{=2^{3}=8}}\) \(\text { Ratio }=\dfrac{8}{3}=2.67\)
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:
Reaction of carbonyl compounds with ammonia derivatives is an example of Nucleophilic addition elimination reaction.
CHXII12:ALDEHYDES KETONES AND CARBOXYLIC ACIDS
323519
\(\mathrm{CH}_{3}-\mathrm{CHO}+\mathrm{H}_{2} \mathrm{~N}-\mathrm{OH} \longrightarrow \mathrm{A}\). The type of isomerism shown by compound ' \(\mathrm{A}\) ' is
1 Geometrical isomeism
2 Optical isomerism
3 Both 1 & 2
4 Does not exhibit any isomerism
Explanation:
\(\mathrm{A}: \mathrm{CH}_{3} \mathrm{CH}=\mathrm{N}-\mathrm{OH}\) (oximes) and shows geometrical isomerism.
CHXII12:ALDEHYDES KETONES AND CARBOXYLIC ACIDS
323520
Assertion : Rate of addition of \(\mathrm{HCN}\) on carbonyl compounds increases in presence of \(\mathrm{NaCN}\). Reason : Reaction involves the addition of \(\mathrm{CN}^{-}\) 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.
Explanation:
\(\mathrm{NaCN}\) catalyzes the nucleophilic addition of \(\mathrm{HCN}\) to carbonyl compounds by continuously generating cyanide ions, enhancing the reaction rate and efficiency to yield higher amounts of cyanohydrin products. So the option (1) is correct.
323517 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
Explanation:
Stereocentres \({\mathrm{=3}}\) Possible stereoisomers \({\mathrm{=2^{3}=8}}\) \(\text { Ratio }=\dfrac{8}{3}=2.67\)
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:
Reaction of carbonyl compounds with ammonia derivatives is an example of Nucleophilic addition elimination reaction.
CHXII12:ALDEHYDES KETONES AND CARBOXYLIC ACIDS
323519
\(\mathrm{CH}_{3}-\mathrm{CHO}+\mathrm{H}_{2} \mathrm{~N}-\mathrm{OH} \longrightarrow \mathrm{A}\). The type of isomerism shown by compound ' \(\mathrm{A}\) ' is
1 Geometrical isomeism
2 Optical isomerism
3 Both 1 & 2
4 Does not exhibit any isomerism
Explanation:
\(\mathrm{A}: \mathrm{CH}_{3} \mathrm{CH}=\mathrm{N}-\mathrm{OH}\) (oximes) and shows geometrical isomerism.
CHXII12:ALDEHYDES KETONES AND CARBOXYLIC ACIDS
323520
Assertion : Rate of addition of \(\mathrm{HCN}\) on carbonyl compounds increases in presence of \(\mathrm{NaCN}\). Reason : Reaction involves the addition of \(\mathrm{CN}^{-}\) 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.
Explanation:
\(\mathrm{NaCN}\) catalyzes the nucleophilic addition of \(\mathrm{HCN}\) to carbonyl compounds by continuously generating cyanide ions, enhancing the reaction rate and efficiency to yield higher amounts of cyanohydrin products. So the option (1) is correct.
323517 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
Explanation:
Stereocentres \({\mathrm{=3}}\) Possible stereoisomers \({\mathrm{=2^{3}=8}}\) \(\text { Ratio }=\dfrac{8}{3}=2.67\)
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:
Reaction of carbonyl compounds with ammonia derivatives is an example of Nucleophilic addition elimination reaction.
CHXII12:ALDEHYDES KETONES AND CARBOXYLIC ACIDS
323519
\(\mathrm{CH}_{3}-\mathrm{CHO}+\mathrm{H}_{2} \mathrm{~N}-\mathrm{OH} \longrightarrow \mathrm{A}\). The type of isomerism shown by compound ' \(\mathrm{A}\) ' is
1 Geometrical isomeism
2 Optical isomerism
3 Both 1 & 2
4 Does not exhibit any isomerism
Explanation:
\(\mathrm{A}: \mathrm{CH}_{3} \mathrm{CH}=\mathrm{N}-\mathrm{OH}\) (oximes) and shows geometrical isomerism.
CHXII12:ALDEHYDES KETONES AND CARBOXYLIC ACIDS
323520
Assertion : Rate of addition of \(\mathrm{HCN}\) on carbonyl compounds increases in presence of \(\mathrm{NaCN}\). Reason : Reaction involves the addition of \(\mathrm{CN}^{-}\) 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.
Explanation:
\(\mathrm{NaCN}\) catalyzes the nucleophilic addition of \(\mathrm{HCN}\) to carbonyl compounds by continuously generating cyanide ions, enhancing the reaction rate and efficiency to yield higher amounts of cyanohydrin products. So the option (1) is correct.
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CHXII12:ALDEHYDES KETONES AND CARBOXYLIC ACIDS
323517 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
Explanation:
Stereocentres \({\mathrm{=3}}\) Possible stereoisomers \({\mathrm{=2^{3}=8}}\) \(\text { Ratio }=\dfrac{8}{3}=2.67\)
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:
Reaction of carbonyl compounds with ammonia derivatives is an example of Nucleophilic addition elimination reaction.
CHXII12:ALDEHYDES KETONES AND CARBOXYLIC ACIDS
323519
\(\mathrm{CH}_{3}-\mathrm{CHO}+\mathrm{H}_{2} \mathrm{~N}-\mathrm{OH} \longrightarrow \mathrm{A}\). The type of isomerism shown by compound ' \(\mathrm{A}\) ' is
1 Geometrical isomeism
2 Optical isomerism
3 Both 1 & 2
4 Does not exhibit any isomerism
Explanation:
\(\mathrm{A}: \mathrm{CH}_{3} \mathrm{CH}=\mathrm{N}-\mathrm{OH}\) (oximes) and shows geometrical isomerism.
CHXII12:ALDEHYDES KETONES AND CARBOXYLIC ACIDS
323520
Assertion : Rate of addition of \(\mathrm{HCN}\) on carbonyl compounds increases in presence of \(\mathrm{NaCN}\). Reason : Reaction involves the addition of \(\mathrm{CN}^{-}\) 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.
Explanation:
\(\mathrm{NaCN}\) catalyzes the nucleophilic addition of \(\mathrm{HCN}\) to carbonyl compounds by continuously generating cyanide ions, enhancing the reaction rate and efficiency to yield higher amounts of cyanohydrin products. So the option (1) is correct.
