Select correct statement :

Options

A. `Cl_(2)O` and `ClO_(2)` are used as bleaching agents and as germicides.
B. `I_(2)O_(5)` is used in the quantitative estimation of CO.
C. `Cl_(2)O` explodes in presence of ammonia forming `NH_(4)Cl` and liberating `N_(2)` gas.
D. all are correct.

Answer

To solve the question, we need to evaluate the statements provided and determine which ones are correct. Here’s a step-by-step breakdown:

### Step 1: Evaluate the first statement
**Statement:** Cl2O and ClO2 are used as bleaching agents and as germicides.

**Analysis:**
- Cl2O (Dichlorine monoxide) and ClO2 (Chlorine dioxide) are known for their bleaching properties.
- They can act as germicides because they can oxidize organic matter and kill bacteria.
- They also change the color of litmus paper, turning blue litmus red due to their acidic nature.

**Conclusion:** This statement is correct.

### Step 2: Evaluate the second statement
**Statement:** I2O5 is used in the quantitative estimation of CO.

**Analysis:**
- I2O5 (Iodine pentoxide) is indeed used in analytical chemistry, particularly in the quantitative estimation of carbon monoxide (CO) through redox reactions.
- It reacts with CO to form iodine and other products, allowing for the measurement of CO concentration.

**Conclusion:** This statement is also correct.

### Step 3: Evaluate the third statement
**Statement:** Cl2O explodes in the presence of ammonia forming NH4Cl and liberating N2 gas.

**Analysis:**
- The reaction of Cl2O with ammonia (NH3) can be represented as:
\[ Cl2O + 2NH3 \rightarrow NH4Cl + N2 + H2O \]
- This reaction does indeed produce ammonium chloride (NH4Cl), nitrogen gas (N2), and water (H2O).
- The explosive nature of the reaction is also noted in chemical literature.

**Conclusion:** This statement is correct as well.

### Final Conclusion
Since all three statements are correct, the answer to the question is that all of the statements are correct.

### Answer: D) All of the above

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