`{:(1."Separating ammonium chloride from salt",(a) "Filtration"),( 2. "Separating paneer from whey",(b) "Fractional distillation"),(3. "Separating flour from bran", (c ) "Centrifugation"),( 4. "Separating butter from milk",(d) "Sublimation"),( 5. "Separating petrol and diesel from crude oil", (e) "Sieving"):}`

Explanation

To solve the question of matching the separation methods with the respective substances, we will analyze each statement and determine the correct method of separation.

### Step-by-Step Solution:

1. **Separating Ammonium Chloride from Salt**:
- Ammonium chloride can be separated from salt using the process of **sublimation**. This is because ammonium chloride can be converted directly from solid to gas when heated, leaving the salt behind.
- **Match**: 1 → (d) Sublimation

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