A mixture of rice and salt can be best separated by

Options

A. sieving
B. crystallisation
C. hand picking
D. threshing

Explanation

To separate a mixture of rice and salt, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding the Mixture**:
- We have a mixture of rice (solid grains) and salt (fine crystalline solid).

2. **Choosing the Separation Method**:
- We need to select a method that can effectively separate these two substances based on their physical properties.

3. **Using Sieving**:
- **Sieving** is a method that utilizes a sieve (a device with small holes) to separate particles based on size.
- In this case, the salt particles are much smaller than the rice grains.

4. **Performing the Separation**:
- Place the mixture of rice and salt onto the sieve.
- Shake or tap the sieve gently.
- The salt will pass through the holes of the sieve, while the larger rice grains will remain on top.

5. **Collecting the Separated Substances**:
- Collect the rice that remains on the sieve.
- Collect the salt that has passed through into a container below the sieve.

6. **Final Check**:
- Ensure that all the salt has passed through and that the rice is clean and free of salt.

### Conclusion:
The best method to separate a mixture of rice and salt is **sieving**.

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