Chemical change does not take place in case of

Options

A. formation of manure from leaves
B. beating aluminium to make aluminium foil
C. digestion of food
D. burning of magnesium ribbon in air

Answer

To determine which option does not involve a chemical change, we can analyze each option provided in the question.

### Step-by-Step Solution:

1. **Understanding Chemical Change**:
- A chemical change occurs when a substance undergoes a transformation that alters its chemical composition, resulting in the formation of new substances.

2. **Analyzing Each Option**:
- **Option 1: Formation of manure from leaves**:
- This process involves decomposition, where the chemical composition of the leaves changes to form manure. Therefore, this is a chemical change.

- **Option 2: Beating aluminum foil**:
- Beating aluminum foil changes its shape but does not alter its chemical composition. No new substance is formed, which means this is a physical change.

- **Option 3: Digestion of food**:
- Digestion involves breaking down food into simpler molecules through chemical reactions facilitated by enzymes. This is a chemical change as new substances are formed.

- **Option 4: Burning of magnesium ribbon in air**:
- Burning magnesium produces magnesium oxide (MgO), which is a new substance. This is a chemical change.

3. **Conclusion**:
- The only option that does not involve a chemical change is **Option 2: Beating aluminum foil**.

### Final Answer:
Chemical change does not take place in case of **Option 2: Beating aluminum foil**.

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