Arrange the following efforts to control pollution in chronological order.
A. In India, the air (Prevention and control of Pollution) Act was amended to include noise as an air pollutant.
B. The government of India passed the water (Prevention and Control of Pollution)Act to safeguard our water resources.
C. Recognizing the deleterious effects of ozone depletion, the Montreal Protocol became effective.
D. The National Forest Policy of India recommended 33% forest cover for the plains and 67 % for this hills.

Options

A. A - B - D - C
B. B - A - D- C
C. B - A - C - D
D. A - B - C - D

Answer

To arrange the efforts to control pollution in chronological order, we need to identify the years in which each of the mentioned acts or protocols was established. Here’s a step-by-step breakdown:

1. **Identify the Acts and Their Years**:
- **A**: The Air (Prevention and Control of Pollution) Act was amended to include noise as an air pollutant. This amendment occurred in **1987**.
- **B**: The Water (Prevention and Control of Pollution) Act was passed to safeguard water resources. This act was established in **1974**.
- **C**: The Montreal Protocol, recognizing the effects of ozone depletion, became effective in **1987**.
- **D**: The National Forest Policy of India recommended 33% forest cover for plains and 67% for hills. This policy was introduced in **1988**.

2. **Chronological Order**:
- First, we have **B (1974)**: Water (Prevention and Control of Pollution) Act.
- Next is **A (1987)**: Air (Prevention and Control of Pollution) Act amendment.
- Then we have **C (1987)**: Montreal Protocol.
- Finally, **D (1988)**: National Forest Policy.

3. **Final Arrangement**:
- The chronological order of the efforts to control pollution is:
1. B (1974)
2. A (1987)
3. C (1987)
4. D (1988)

Therefore, the correct chronological order is: **B, A, C, D**.