Q. No.Which of the following is a vic-Dihalide?
1. Dichloromethane
2. 1,2-Dichloroethane
3. Ethylidene chloride
4. Allyl chloride
1. Dichloromethane
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What results from treating chloromethane with excess ammonia?
1. N, N-dimethylmethanamine (\(N{(CH_3)}_{3}\))
2. N-methylmethanamine (CH3-NH—CH3)
3. Methanamine (CH3NH2)
4. Mixture containing all these in equal proportion
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Match the items in Column I and Column II.
| Column l | Column ll |
| A. SN1 reaction | 1. Vic-dibromide |
| B. Elimination of HX from an alkyl halide | 2. Chlorobromocarbons |
| C. Bromination of alkenes | 3. Racemisation |
| D. Chemicals in fire extinguisher | 4. Saytzeff rule |
Codes:
| A | B | C | D | |
| 1. | 2 | 3 | 4 | 1 |
| 2. | 3 | 4 | 1 | 2 |
| 3. | 1 | 4 | 3 | 2 |
| 4. | 4 | 1 | 3 | 2 |
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Match the structures of compounds given in Column I with the classes of compounds given in Column II.
| Column I | Column II | ||
| A. |  |
1. | Aryl halide |
| B. |  |
2. | Alkyl halide |
| C. |  |
3. | Vinyl halide |
| D. |  |
4. | Allylic halide |
Codes:
| A | B | C | D | |
| 1. | 2 | 4 | 1 | 3 |
| 2. | 3 | 4 | 1 | 2 |
| 3. | 1 | 4 | 3 | 2 |
| 4. | 4 | 1 | 3 | 2 |
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Match the reactions given in Column I with the types of reactions given in Column II and mark the appropriate option.
| Column-I | Column-II | ||
| A. |  |
(i) | Nucleophilic aromatic substitution reaction |
| B. |  |
(ii) | Electrophilic aromatic substitution |
| C. |  |
(iii) | Saytzeff elimination |
| D |  |
(iv) | Electrophilic addition |
| (v) | Nucleophilic substitution reaction |
Codes:
| A | B | C | D | |
| 1. | (ii) | (iv) | (v) | (i) |
| 2. | (iii) | (i) | (v) | (ii) |
| 3. | (v) | (iv) | (iii) | (ii) |
| 4. | (iv) | (v) | (iii) | (ii) |
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Match the structures given in Column-I with the IUPAC names in Column-II.
| Column-I (Structure) | Column-II (IUPAC Name) | ||
| A. |  |
(i) | 4-Bromopent-2-ene |
| B. |  |
(ii) | 4-Bromo-3-methylpent-2-ene |
| C. |  |
(iii) | 1-Bromobut-2-ene |
| D. |  |
(iv) | 1-Bromo-2-methylpent-2-ene |
Codes:
| A | B | C | D | |
| 1. | (ii) | (iii) | (iv) | (i) |
| 2. | (i) | (ii) | (iii) | (iv) |
| 3. | (i) | (iv) | (iii) | (ii) |
| 4. | (iv) | (i) | (iii) | (ii) |
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The correct match of column I (Reactions) with column II (Name of reactions) is:
| Column I | Column II | ||
| A. |  |
1. | Fittig reaction |
| B. |  |
2. | Wurtz-Fittig reaction |
| C. |  |
3. | Finkelstein reaction |
| D. |  |
4. | Sandmeyer reaction |
Codes:
| A | B | C | D | |
| 1. | 2 | 1 | 4 | 3 |
| 2. | 3 | 1 | 4 | 2 |
| 3. | 1 | 4 | 3 | 2 |
| 4. | 4 | 1 | 3 | 2 |
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Select the correct option based on statements below:
| Assertion (A): | Phosphorus chlorides (tri and Penta) are preferred over thionyl chloride for the preparation of alkyl chlorides from alcohols. |
| Reason (R): | Phosphorus chlorides give pure alkyl halides. |
| 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. | Both (A) and (R) are False. |
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