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 |
A. A mixture containing two enantiomers in equal proportions will have zero optical rotation, such a mixture is known as a racemic mixture. The process of conversion of enantiomer into a racemic mixture is known as racemization. If an alkyl halide follows mechanism then racemization takes place.
B. Chlorobromocarbons are used in fire extinguishers.
C. Alkene reacts with Br2 and vicinal dihalide alkane is obtained as a product. The reaction is as follows:
D. Elimination of HX from alkyl halide follows the Saytzetf rule. This rule states that in dehydrohalogenation reactions, the preferred product is that alkene which has the greater number of alkyl groups attached to the doubly bonded carbon atoms.
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