Mark 'T' if the statement is true and 'F' if it is false:
Nitric acid turns red litmus blue. (T/F)

Answer

To determine whether the statement "Nitric acid turns red litmus blue" is true or false, we can follow these steps:

### Step 1: Understand Litmus Paper
Litmus paper is a pH indicator used to test whether a solution is acidic or basic. There are two types of litmus paper:
- **Red litmus paper**: Indicates acidic solutions. If it turns blue, the solution is basic.
- **Blue litmus paper**: Indicates basic solutions. If it turns red, the solution is acidic.

### Step 2: Identify the Nature of Nitric Acid
Nitric acid is a strong acid, and its chemical formula is HNO3. As an acid, it has specific properties when tested with litmus paper.

### Step 3: Analyze the Statement
The statement claims that nitric acid turns red litmus blue. Since nitric acid is an acid, it will not turn red litmus blue. Instead, it will turn blue litmus red.

### Step 4: Conclusion
Since the statement is incorrect, we mark it as false.

**Final Answer**: F (False)

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