Q. No.
The reaction of a carbonyl compound with one of the following reagents involves nucleophilic addition followed by the elimination of water. The reagents are:
| 1. | A Grignard reagent. |
| 2. | Hydrazine in the presence of a feebly acidic solution. |
| 3. | Hydrocyanic acid. |
| 4. | Sodium hydrogen sulphite. |
Treatment of cyclopentanone with methyl lithium generates:
1. Cyclopentanonyl cation
2. Cyclopentanonyl radical
3. Cyclopentanonyl biradical
4. Cyclopentanonyl anion
Compounds that can exhibit tautomerism are:
| 1. | l and ll | 2. | l and lll |
| 3. | ll and lll | 4. | l, ll and lll |
An organic compound X having molecular formula C5H10O yields phenyl hydrazone and gives a negative response to the iodoform test and Tollen's test. It produces n-pentane on reduction. X could be:
2. 2-Pentanone
3. 3-Pentanone
4. n-Amyl alcohol
The compound, among the following, that will not be soluble in sodium hydrogen carbonate is:
| 1. | 2, 4, 6-Trinitrophenol | 2. | Benzoic acid |
| 3. | o-Nitrophenol | 4. | Benezenesulphonic acid |
What is the order of the stability of the following tautomeric compounds?
2. II > I > III
3. II > III > I
4. I > II > III
\(\text {HC} \equiv \text {CH} \xrightarrow [Hg^{2+}] { H_2SO_4} P \)
Product 'P' will not give
1. Tollen's reagent test
2. Fehling's solution
3. Victor Meyer test
4. Iodoform test
© 2026 GoodEd Technologies Pvt. Ltd.