Green chemistry used in day to day life

Options

A. Cleaning cloth with water
B. Using liquid `H_2O_2` in drying clothes
C. Using tetrachloroethane in laundries
D. Using chlorine in bleaching paper

Answer

### Step-by-Step Solution:

1. **Understanding Green Chemistry**: Green chemistry is a branch of chemistry focused on designing chemical processes and products that reduce or eliminate the generation of hazardous substances. It aims to minimize the environmental impact of chemical manufacturing and usage.

2. **Analyzing the Options**:
- **Option A**: Cleaning cloth with water. This is a conventional method and does not involve any specific green chemistry principles.
- **Option B**: Using liquid hydrogen peroxide (H2O2) in drying clothes. Hydrogen peroxide is known for its bleaching and disinfecting properties while being less toxic compared to chlorine-based bleaches. This aligns with green chemistry principles as it reduces harmful substances.
- **Option C**: Using tetrachloroethane in laundries. Tetrachloroethane is a known carcinogen and poses health risks, making it contrary to the goals of green chemistry.
- **Option D**: Using chlorine in bleaching paper. Chlorine is toxic and can lead to water pollution, which is not in line with green chemistry practices.

3. **Identifying the Correct Answer**: After analyzing all options, Option B (using liquid hydrogen peroxide in drying clothes) is the best choice as it adheres to the principles of green chemistry by being less toxic and effective for its purpose.

### Final Answer:
The correct answer is **using liquid hydrogen peroxide (H2O2) in drying clothes**.

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