Maximum background radiation occurs in

Options

A. Chennai beaches
B. mumbai beaches
C. kerela beaches
D. Andaman and nicobar islands

Answer

To solve the question regarding where maximum background radiation occurs, we can follow these steps:

### Step-by-Step Solution:

1. **Understand Background Radiation**: Background radiation refers to the ionizing radiation present in the environment, which comes from natural sources such as cosmic rays, radon gas, and terrestrial sources.

2. **Identify the Options**: The question provides four options:
- A) Chennai beaches
- B) Mumbai beaches
- C) Kerala beaches
- D) Andaman and Nicobar Islands

3. **Research Background Radiation Levels**: To determine which location has the highest background radiation, we need to consider geological factors. Certain areas have higher concentrations of radioactive materials.

4. **Analyze Each Option**:
- **Chennai Beaches**: Known to have some background radiation due to radionuclides, but not the highest.
- **Mumbai Beaches**: Similar to Chennai, does not have the highest levels of background radiation.
- **Kerala Beaches**: Notably contains thorium-rich monazite sand, which contributes to higher background radiation levels.
- **Andaman and Nicobar Islands**: Generally lower levels of background radiation compared to Kerala.

5. **Conclusion**: Based on the analysis, Kerala beaches have the highest background radiation due to the presence of thorium-rich monazite sand.

6. **Final Answer**: The correct answer is **C) Kerala beaches**.