- 1(current)
Q. No.Subtopic: Isomers & Reaction Mechanism |
81%
Level 1: 80%+
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Identify (X) in the given sequential reaction.
1. CH3OH
2. Ethyl alcohol
3. Methyl cyanide
4. tert-Butyl alcohol
Subtopic: Isomers & Reaction Mechanism |
89%
Level 1: 80%+
Hints
In this reaction,
CH3CHO + HCN CH3CH(OH)CN CH3CH(OH)COOH
an asymmetric compound is generated. The acid obtained would be
1. 50% D + 50% L-isomer
2. 20% D + 80% L-isomer
3. D-isomer
4. L-isomer
Subtopic: Isomers & Reaction Mechanism |
84%
Level 1: 80%+
Hints
| Assertion (A) : | In the addition of Grignard reagent to carbonyl compound, the R group of RMgX attacks carbonyl carbon. |
| Reason (R) : | The carbon magnesium bond of the Grignard reagent is highly polar, carbon being negative relative to electropositive magnesium. |
| 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 |
81%
Level 1: 80%+
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Consider the following reaction sequence:
\((i)CH_3CH_2CH_2C\equiv CH\xrightarrow[\text{dil. }H_2SO_4]{Hg^{2+}}\text{A(major)}\\ (ii)A\xrightarrow[\text{(ii) }KOH,\text{ethylene glycol},\Delta]{\text{(i)}~NH_2NH_2}\text{B(major)} \)
Major products A and B are:
\((i)CH_3CH_2CH_2C\equiv CH\xrightarrow[\text{dil. }H_2SO_4]{Hg^{2+}}\text{A(major)}\\ (ii)A\xrightarrow[\text{(ii) }KOH,\text{ethylene glycol},\Delta]{\text{(i)}~NH_2NH_2}\text{B(major)} \)
Major products A and B are:
| 1. |  |
| 2. |  |
| 3. |  |
| 4. |  |
Subtopic: Isomers & Reaction Mechanism |
80%
Level 1: 80%+
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- 1(current)
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