For the separation of components of a mixture of camphor, filings and sand, arrange the following processes in sequence.
(a) Magnetic separation, (b) Distillation
(c ) Sublimation, (d) Sedimentation and decantation

Options

A. a,b,c,d
B. b,a
C. b,d
D. a,c

Explanation

To separate the components of a mixture of camphor, iron filings, and sand, we can follow these steps in sequence:

### Step-by-Step Solution:

1. **Magnetic Separation**:
- Start by using a magnet to attract the iron filings from the mixture. Since iron filings are magnetic, they will stick to the magnet, allowing you to separate them from the non-magnetic components (camphor and sand).

2. **Sedimentation and Decantation**:
- Next, add water to the remaining mixture of camphor and sand. The sand, being heavier, will settle at the bottom (sedimentation). After some time, carefully pour off the water along with the dissolved camphor, leaving the sand behind (decantation).

3. **Distillation**:
- To separate the camphor from the water, you can use distillation. Heat the mixture, and since camphor has a lower boiling point than water, it will vaporize first. The vapor can then be cooled and collected as liquid camphor, leaving the water behind.

4. **Sublimation**:
- Finally, if any camphor remains mixed with sand, you can use sublimation. Heat the mixture, and the camphor will sublime (turn into vapor) and can be collected, leaving the sand behind.

### Final Sequence:
- (a) Magnetic separation
- (d) Sedimentation and decantation
- (b) Distillation
- (c) Sublimation