Given below are two statements :
Statement I : The pH of rain water is normally 5.6.
Statement II : If the pH of rain water drops below 5.6, it is called acid rain.
In the light of the above statements, choose the correct answer from the options given below:

Options

A. Statement I is true but Statement II is false.
B. Both Statement I and Statement II are false
C. Statement I is false but Statement II is true
D. Both Statement I and Statement II are true

Answer

To solve the question regarding the statements about rainwater and acid rain, we will analyze each statement step by step.

### Step 1: Analyze Statement I
**Statement I:** The pH of rainwater is normally 5.6.

- Rainwater is naturally slightly acidic due to the presence of dissolved carbon dioxide (CO2), which forms carbonic acid (H2CO3) when it reacts with water.
- The typical pH of unpolluted rainwater is around 5.6, which is slightly below neutral pH (7).

**Conclusion for Statement I:** This statement is **True**.

### Step 2: Analyze Statement II
**Statement II:** If the pH of rainwater drops below 5.6, it is called acid rain.

- Acid rain is defined as any precipitation (rain, snow, sleet, etc.) that has a pH lower than 5.6.
- This decrease in pH is often due to the presence of sulfur dioxide (SO2) and nitrogen oxides (NOx) in the atmosphere, which can form sulfuric acid (H2SO4) and nitric acid (HNO3) when they react with water.

**Conclusion for Statement II:** This statement is also **True**.

### Step 3: Final Conclusion
Since both statements are true, we can conclude that the correct answer is:

**Both statements are correct.**

### Answer:
**Option A: Both statements are correct.**

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