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 actions was taken. Here’s the step-by-step solution:

1. **Identify the Years of Each Action**:
- **A**: In India, the Air (Prevention and Control of Pollution) Act was amended to include noise as an air pollutant. (Year: 1987)
- **B**: The Government of India passed the Water (Prevention and Control of Pollution) Act to safeguard our water resources. (Year: 1974)
- **C**: Recognizing the deleterious effects of ozone depletion, the Montreal Protocol became effective. (Year: 1987)
- **D**: The National Forest Policy of India recommended 33% forest cover for the plains and 67% for the hills. (Year: 1988)

2. **Chronological Order**:
- First, we have **B** (1974) - Water (Prevention and Control of Pollution) Act.
- Next, we have **A** (1987) - Amendment of the Air (Prevention and Control of Pollution) Act to include noise.
- Then, we have **C** (1987) - Montreal Protocol becomes effective.
- Finally, we have **D** (1988) - National Forest Policy of India.

3. **Final Arrangement**:
- The chronological order is: **B, A, C, D**.

Thus, the correct answer is **B A C D**.