Which of the following statements regarding hydrogen peroxide is`//` are incorrect ?

Options

A. The two hydroxyl groups in hydrogen peroxide lie in the different plane
B. Aqueous solution of `H_(2)O_(2)` turns blue litmus red.
C. When `H_(2)O_(2)` behaves as a reducing agent, the `O-O` bond in its molecules is not broken down.
D. Aqueous solution of `H_(2)O_(2)` is stored in plastic bottles and some urea, phosphoric acid or glycerol is added to that solution.

Explanation

To determine which statements regarding hydrogen peroxide (H2O2) are incorrect, we will analyze each statement one by one.

### Step 1: Analyze Statement A
**Statement A**: Hydrogen peroxide has two hydroxyl groups and they lie in different planes.

- **Analysis**: The structure of hydrogen peroxide (H2O2) consists of two hydroxyl (–OH) groups attached to the oxygen atoms. The molecular formula is H2O2, and the structure can be represented as H-O-O-H. The two hydroxyl groups indeed lie in different planes due to the angle between the oxygen atoms. Therefore, this statement is **correct**.

### Step 2: Analyze Statement B
**Statement B**: Aqueous solution of H2O2 turns blue litmus red.

- **Analysis**: Hydrogen peroxide in an aqueous solution behaves as a mild acid. Acids are known to turn blue litmus paper red. Therefore, this statement is also **correct**.

### Step 3: Analyze Statement C
**Statement C**: When H2O2 behaves as a reducing agent, the O-O bond in its molecule is not broken down.

- **Analysis**: When hydrogen peroxide acts as a reducing agent, the O-O bond does break. The reaction can be represented as:
\[ 2 \text{H}_2\text{O}_2 \rightarrow 2 \text{H}_2\text{O} + \text{O}_2 \]
In this reaction, the O-O bond is indeed broken, which contradicts the statement. Therefore, this statement is **incorrect**.

### Step 4: Analyze Statement D
**Statement D**: Aqueous solution of H2O2 is stored in plastic bottles and some urea, phosphoric acid, or glycerol is added to that solution.

- **Analysis**: Hydrogen peroxide is sensitive to light and can decompose when exposed to it. Therefore, it is commonly stored in opaque containers (like plastic or dark glass bottles) to prevent decomposition. Additionally, stabilizers such as urea or phosphoric acid are often added to prolong its shelf life. Thus, this statement is **correct**.

### Conclusion
The only incorrect statement regarding hydrogen peroxide is **Statement C**.

### Final Answer
**The incorrect statement is Statement C.**

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