Question

Which one of the following chemical agent is not being used for dry-cleaning of clothes ?

• A. $CCl_4$
• B. $Cl_2C=CCl_2$
• C. Liquid $CO_2$
• D. $H_2O_2$

Hint:

Carbon tetrachloride is strictly avoided in modern household and industrial applications due to its severe health impacts.

Answer 1

The Correct Option is A

Step 1: Understanding the Concept:
Green chemistry aims to replace toxic chemicals with safer alternatives.
Step 2: Detailed Explanation:
1. \(CCl_4\): Was used earlier but is no longer used because it is highly toxic and carcinogenic. It also pollutes groundwater and is a suspected ozone depleter.
2. \(Cl_2C=CCl_2\): (Tetrachloroethene) Is used but is being phased out due to toxicity.
3. Liquid \(CO_2\): Used as a modern, environment-friendly alternative.
4. \(H_2O_2\): Used as a bleaching agent in laundry for a cleaner effect with less toxicity than chlorine-based bleach.
Step 3: Final Answer:
\(CCl_4\) is not being used today.