Substance P has rough texture, Q is nonlustrous while R floats on water. P, Q and R could be respectively

Options

A. Copper vessel, steel spoon and wooden bowl
B. Sand paper, wooden bowl and petrol
C. Pumice stone, jute bag and wooden bowl
D. Both (B) and (C).

Explanation

To solve the problem, we need to identify substances P, Q, and R based on the given characteristics:

1. **Substance P** has a rough texture.
2. **Substance Q** is non-lustrous.
3. **Substance R** floats on water.

Let's analyze each substance step by step:

### Step 1: Identify Substance P
- **Characteristic**: Rough texture.
- **Possible Substance**: Sandpaper is a good candidate because it is known for its rough texture.

### Step 2: Identify Substance Q
- **Characteristic**: Non-lustrous.
- **Possible Substance**: A wooden bowl is a suitable choice here as wood typically does not have a shiny surface and is considered non-lustrous.

### Step 3: Identify Substance R
- **Characteristic**: Floats on water.
- **Possible Substance**: A wooden bowl also fits this description because wood generally has a density less than that of water, allowing it to float.

### Conclusion
Based on the analysis:
- **Substance P**: Sandpaper (rough texture)
- **Substance Q**: Wooden bowl (non-lustrous)
- **Substance R**: Wooden bowl (floats on water)

Thus, P, Q, and R could be respectively identified as:
- P: Sandpaper
- Q: Wooden bowl
- R: Wooden bowl

### Final Answer
P = Sandpaper, Q = Wooden bowl, R = Wooden bowl.

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