- 1(current)
Q. No.Which of the following is the correct representation for intermediate of nucleophilic addition reaction to the given carbonyl compound (A) :
| a. |  |
| b. |  |
| c. |  |
| d. |  |
Choose the correct option
| 1. | (a, b) | 2. | (b, c) |
| 3. | (c, d) | 4. | (a, d) |
Subtopic: Isomers & Reaction Mechanism |
79%
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The most reactive compound among the following toward nucleophilic addition reaction is:
| 1. |  |
2. |  |
| 3. |  |
4. |  |
Subtopic: Isomers & Reaction Mechanism |
70%
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Through which of the following reactions number of carbon atoms can be increased in the chain?
a. Grignard reaction
b. Cannizzaro’s reaction
c. Aldol condensation
d. HVZ reaction
Choose the correct option:
1. (a, b)
2. (b, c)
3. (c, d)
4. (a, c)
Subtopic: Isomers & Reaction Mechanism | Name Reaction |
77%
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Select the correct option based on statements below:
| Assertion (A): | Compounds containing —CHO group are easily oxidised to corresponding carboxylic acids. |
| Reason (R): | Carboxylic acids can be reduced to alcohol by treatment with LiAlH4. |
| 1. | Both (A) and (R) are True and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are True but (R) is not the correct explanation of (A). |
| 3. | (A) is True but (R) is False. |
| 4. | (A) is False but (R) is True. |
Subtopic: Isomers & Reaction Mechanism |
82%
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Select the correct option based on statements below:
| Assertion (A): | The α -hydrogen atom in carbonyl compounds is less acidic. |
| Reason (R): | The anion formed after the loss of the α -hydrogen atom is resonance stabilized. |
| 1. | Both (A) and (R) are True and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are True but (R) is not the correct explanation of (A). |
| 3. | (A) is True but (R) is False. |
| 4. | (A) is False but (R) is True. |
Subtopic: Isomers & Reaction Mechanism |
70%
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Select the correct option based on statements below:
| Assertion (A): | Aromatic aldehydes and formaldehydes undergo the Cannizzaro reaction. |
| Reason (R): | Aromatic aldehydes are almost as reactive as formaldehyde. |
| 1. | Both (A) and (R) are True and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are True but (R) is not the correct explanation of (A). |
| 3. | (A) is True but (R) is False. |
| 4. | (A) is False but (R) is True. |
Subtopic: Isomers & Reaction Mechanism |
65%
From NCERT
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- 1(current)
Q. No.
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