Q. No.For the given reaction:
\(\mathrm{CH}_3-\mathrm{Br} \xrightarrow{\mathrm{CH}_3 \mathrm{OH} / \mathrm{Nu^-}}\)
Determine the correct order of reaction rates for the nucleophilic substitution using the following nucleophiles \( \Rightarrow \mathrm{I}^{\ominus}, \mathrm{F}^{\ominus}, \mathrm{C}_2 \mathrm{H}_5 \mathrm{O}^{\ominus}, \mathrm{PhO}^{\ominus}\)?
1. \( \mathrm{F}^{\ominus}>\mathrm{PhO}^{\ominus}>\mathrm{C}_2 \mathrm{H}_5 \mathrm{O}^{\ominus}>\mathrm{I}^{\ominus}\)
2. \( \mathrm{C}_2 \mathrm{H}_5 \mathrm{O}^{\ominus}>\mathrm{PhO}^{\ominus}>\mathrm{I}^{\ominus}>\mathrm{F}^{\ominus}\)
3. \( \mathrm{I}^{\ominus}>\mathrm{C}_2 \mathrm{H}_5 \mathrm{O}^{\ominus}>\mathrm{PhO}^{\ominus}>\mathrm{F}^{\ominus}\)
4. \( \mathrm{PhO}^{\ominus}>\mathrm{C}_2 \mathrm{H}_5 \mathrm{O}^{\ominus}>\mathrm{F}^{\ominus}>\mathrm{I}^{\ominus}\)
\(\mathrm{CH}_3-\mathrm{Br} \xrightarrow{\mathrm{CH}_3 \mathrm{OH} / \mathrm{Nu^-}}\)
Determine the correct order of reaction rates for the nucleophilic substitution using the following nucleophiles \( \Rightarrow \mathrm{I}^{\ominus}, \mathrm{F}^{\ominus}, \mathrm{C}_2 \mathrm{H}_5 \mathrm{O}^{\ominus}, \mathrm{PhO}^{\ominus}\)?
1. \( \mathrm{F}^{\ominus}>\mathrm{PhO}^{\ominus}>\mathrm{C}_2 \mathrm{H}_5 \mathrm{O}^{\ominus}>\mathrm{I}^{\ominus}\)
2. \( \mathrm{C}_2 \mathrm{H}_5 \mathrm{O}^{\ominus}>\mathrm{PhO}^{\ominus}>\mathrm{I}^{\ominus}>\mathrm{F}^{\ominus}\)
3. \( \mathrm{I}^{\ominus}>\mathrm{C}_2 \mathrm{H}_5 \mathrm{O}^{\ominus}>\mathrm{PhO}^{\ominus}>\mathrm{F}^{\ominus}\)
4. \( \mathrm{PhO}^{\ominus}>\mathrm{C}_2 \mathrm{H}_5 \mathrm{O}^{\ominus}>\mathrm{F}^{\ominus}>\mathrm{I}^{\ominus}\)
Subtopic: Mechanism of Reactions |
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Arrange the following compounds in the increasing order of \(SN_1\) reaction:
1. P > Q > R > S
2. R > S > P > Q
3. R > S > Q > P
4. S > R > Q > P
1. P > Q > R > S
2. R > S > P > Q
3. R > S > Q > P
4. S > R > Q > P
Subtopic: Mechanism of Reactions | Chemical Properties |
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Cycloalkene (X) reacts with bromine. During reaction 1 mole of cycloalkane consumes 1 mole of \(Br_2\) then form a product (Y). The product (Y) has C, Br ratio is 3 : 1. The % of bromine in product (Y) is :
1. 66.11 %
2. 65.11 %
3. 76.11 %
4. 67.11 %
1. 66.11 %
2. 65.11 %
3. 76.11 %
4. 67.11 %
Subtopic: Mechanism of Reactions | Chemical Properties |
52%
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Given below are two statements :
In the light of the above statements, choose the correct answer from the options given below.
| Statement I: | The conversion proceeds well in the less polar medium. |
| Statement II: | The conversion proceeds well in the more polar medium. |
| 1. | Both Statement I and Statement II are true |
| 2. | Both Statement I and Statement II are false |
| 3. | Statement I is false but Statement II is true |
| 4. | Statement I is true but Statement II is false |
Subtopic: Mechanism of Reactions |
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The major product of the following reaction is:
1. 6-Phenylhepta-2,4-diene
2. 2-Phenylhepta-2,5-diene
3. 6-Phenylhepta-3,5-diene
4. 2-Phenylhepta-2,4-diene
1. 6-Phenylhepta-2,4-diene
2. 2-Phenylhepta-2,5-diene
3. 6-Phenylhepta-3,5-diene
4. 2-Phenylhepta-2,4-diene
Subtopic: Mechanism of Reactions |
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Given below are two statements:
| Statement I: | Alcohol is prepared from alkyl halide in presence of aq. KOH by elimination. |
| Statement II: | Alkenes are prepared from alkyl halide with alc. KOH by \(\beta-\)elimination. |
| 1. | Statement I and statement II both are correct. |
| 2. | Statement I is correct, but Statement II is incorrect. |
| 3. | Statement I is incorrect but statement II is correct. |
| 4. | Statement I and statement II both are incorrect. |
Subtopic: Mechanism of Reactions |
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Match the column:
1. P-IV, Q-III, R-II, S-I
2. P-I, Q-II, R-III, S-IV
3. P-II, Q-III, R-I, S-IV
4. P-III, Q-II, R-I, S-IV
| Column-I (Name reaction) |
Column -I (Representation of reaction) |
||
| (P) | Finkelstein reaction | (I) |  |
| (Q) | Lucas reaction | (II) |  |
| (R) | Wurtz reaction | (III) |  |
| (S) | Gattermann-Koch reaction | (IV) |  |
1. P-IV, Q-III, R-II, S-I
2. P-I, Q-II, R-III, S-IV
3. P-II, Q-III, R-I, S-IV
4. P-III, Q-II, R-I, S-IV
Subtopic: Mechanism of Reactions |
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Subtopic: Mechanism of Reactions |
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How many of the following halobenzenes can be prepared by Sandmeyer’s reaction?
| 1. | Two | 2. | One |
| 3. | Zero | 4. | Four |
Subtopic: Mechanism of Reactions |
76%
Level 2: 60%+
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Subtopic: Mechanism of Reactions |
68%
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