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In place of tetrachloroethene in dry-cle...

In place of tetrachloroethene in dry-cleaning we use

A

Sodium lauryl sulphate

B

Sodium stearate

C

Hydrogen peroxide

D

Sodium bisulphite

Text Solution

AI Generated Solution

The correct Answer is:
**Step-by-Step Solution:** 1. **Identify the Substance**: The question asks about the substance that has replaced tetrachloroethene in dry cleaning. Tetrachloroethene, also known as perchloroethylene, is a chemical compound that was commonly used as a solvent in the dry cleaning industry. 2. **Understand the Issues with Tetrachloroethene**: Tetrachloroethene is suspected to be a carcinogen, meaning it has the potential to cause cancer. Additionally, it poses environmental risks, particularly by contaminating groundwater. 3. **Explore Alternatives**: Due to the health and environmental concerns associated with tetrachloroethene, alternatives have been sought for dry cleaning processes. The video mentions several alternatives, including sodium lauryl sulfate, sodium stearate, hydrogen peroxide, and sodium bisulfite. 4. **Evaluate the Best Alternative**: Among the alternatives listed, hydrogen peroxide (H2O2) is highlighted as the most effective replacement. It is used not only for its cleaning properties but also for its ability to bleach fabrics. Moreover, it is noted for requiring less water compared to tetrachloroethene. 5. **Conclusion**: Based on the information provided, the correct answer to the question is that hydrogen peroxide is used in place of tetrachloroethene in dry cleaning. **Final Answer**: In place of tetrachloroethene in dry cleaning, we use hydrogen peroxide (H2O2). ---
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