323547
How many stereoisomers are possible for the product formed from the condensation of benzaldehyde with acetaldehyde by the action of hot concentrated \(\mathrm{NaOH}\) ?
1 Two
2 Three
3 Four
4 None of these
Explanation:
Two optically active compounds are formed as product contain one chiral carbon.
CHXII12:ALDEHYDES KETONES AND CARBOXYLIC ACIDS
323548
The number of aldol reaction(s) that occurs in the given transformation is
1 3
2 4
3 1
4 2
Explanation:
CHXII12:ALDEHYDES KETONES AND CARBOXYLIC ACIDS
323549
Assertion : Aromatic aldehydes and formaldehyde undergo Cannizzaro reaction. Reason : Aromatic aldehydes are almost as reactive as formaldehyde.
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:
Aromatic aldehydes and formaldehyde, lacking \(\alpha\)-hydrogen atoms, undergo Cannizzaro reaction. Formaldehyde exhibits heightened reactivity, being the simplest aldehyde, due to its smaller size and absence of steric hindrance, leading to efficient formation of carboxylic acid and alcohol. So the option (3) is correct.
CHXII12:ALDEHYDES KETONES AND CARBOXYLIC ACIDS
323550
The number of H -atoms in the product formed is ____.
1 8
2 7
3 6
4 5
Explanation:
Unsaturated aldehydes and ketones can be reduced to unsaturated alcohols without affecting carbon-carbon double bond in presence of \({\mathrm{\mathrm{NaBH}_{4}}}\) in alcohol. The molecular formula of product is \({{\text{C}}_{\text{5}}}{{\text{H}}_{\text{8}}}{\text{O}}\).
323547
How many stereoisomers are possible for the product formed from the condensation of benzaldehyde with acetaldehyde by the action of hot concentrated \(\mathrm{NaOH}\) ?
1 Two
2 Three
3 Four
4 None of these
Explanation:
Two optically active compounds are formed as product contain one chiral carbon.
CHXII12:ALDEHYDES KETONES AND CARBOXYLIC ACIDS
323548
The number of aldol reaction(s) that occurs in the given transformation is
1 3
2 4
3 1
4 2
Explanation:
CHXII12:ALDEHYDES KETONES AND CARBOXYLIC ACIDS
323549
Assertion : Aromatic aldehydes and formaldehyde undergo Cannizzaro reaction. Reason : Aromatic aldehydes are almost as reactive as formaldehyde.
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:
Aromatic aldehydes and formaldehyde, lacking \(\alpha\)-hydrogen atoms, undergo Cannizzaro reaction. Formaldehyde exhibits heightened reactivity, being the simplest aldehyde, due to its smaller size and absence of steric hindrance, leading to efficient formation of carboxylic acid and alcohol. So the option (3) is correct.
CHXII12:ALDEHYDES KETONES AND CARBOXYLIC ACIDS
323550
The number of H -atoms in the product formed is ____.
1 8
2 7
3 6
4 5
Explanation:
Unsaturated aldehydes and ketones can be reduced to unsaturated alcohols without affecting carbon-carbon double bond in presence of \({\mathrm{\mathrm{NaBH}_{4}}}\) in alcohol. The molecular formula of product is \({{\text{C}}_{\text{5}}}{{\text{H}}_{\text{8}}}{\text{O}}\).
323547
How many stereoisomers are possible for the product formed from the condensation of benzaldehyde with acetaldehyde by the action of hot concentrated \(\mathrm{NaOH}\) ?
1 Two
2 Three
3 Four
4 None of these
Explanation:
Two optically active compounds are formed as product contain one chiral carbon.
CHXII12:ALDEHYDES KETONES AND CARBOXYLIC ACIDS
323548
The number of aldol reaction(s) that occurs in the given transformation is
1 3
2 4
3 1
4 2
Explanation:
CHXII12:ALDEHYDES KETONES AND CARBOXYLIC ACIDS
323549
Assertion : Aromatic aldehydes and formaldehyde undergo Cannizzaro reaction. Reason : Aromatic aldehydes are almost as reactive as formaldehyde.
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:
Aromatic aldehydes and formaldehyde, lacking \(\alpha\)-hydrogen atoms, undergo Cannizzaro reaction. Formaldehyde exhibits heightened reactivity, being the simplest aldehyde, due to its smaller size and absence of steric hindrance, leading to efficient formation of carboxylic acid and alcohol. So the option (3) is correct.
CHXII12:ALDEHYDES KETONES AND CARBOXYLIC ACIDS
323550
The number of H -atoms in the product formed is ____.
1 8
2 7
3 6
4 5
Explanation:
Unsaturated aldehydes and ketones can be reduced to unsaturated alcohols without affecting carbon-carbon double bond in presence of \({\mathrm{\mathrm{NaBH}_{4}}}\) in alcohol. The molecular formula of product is \({{\text{C}}_{\text{5}}}{{\text{H}}_{\text{8}}}{\text{O}}\).
NEET Test Series from KOTA - 10 Papers In MS WORD
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CHXII12:ALDEHYDES KETONES AND CARBOXYLIC ACIDS
323547
How many stereoisomers are possible for the product formed from the condensation of benzaldehyde with acetaldehyde by the action of hot concentrated \(\mathrm{NaOH}\) ?
1 Two
2 Three
3 Four
4 None of these
Explanation:
Two optically active compounds are formed as product contain one chiral carbon.
CHXII12:ALDEHYDES KETONES AND CARBOXYLIC ACIDS
323548
The number of aldol reaction(s) that occurs in the given transformation is
1 3
2 4
3 1
4 2
Explanation:
CHXII12:ALDEHYDES KETONES AND CARBOXYLIC ACIDS
323549
Assertion : Aromatic aldehydes and formaldehyde undergo Cannizzaro reaction. Reason : Aromatic aldehydes are almost as reactive as formaldehyde.
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:
Aromatic aldehydes and formaldehyde, lacking \(\alpha\)-hydrogen atoms, undergo Cannizzaro reaction. Formaldehyde exhibits heightened reactivity, being the simplest aldehyde, due to its smaller size and absence of steric hindrance, leading to efficient formation of carboxylic acid and alcohol. So the option (3) is correct.
CHXII12:ALDEHYDES KETONES AND CARBOXYLIC ACIDS
323550
The number of H -atoms in the product formed is ____.
1 8
2 7
3 6
4 5
Explanation:
Unsaturated aldehydes and ketones can be reduced to unsaturated alcohols without affecting carbon-carbon double bond in presence of \({\mathrm{\mathrm{NaBH}_{4}}}\) in alcohol. The molecular formula of product is \({{\text{C}}_{\text{5}}}{{\text{H}}_{\text{8}}}{\text{O}}\).
