Question:
Which of the following is a green alternative for dry cleaning solvents?
Which of the following is a green alternative for dry cleaning solvents?
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The green choice is non-toxic and recyclable: supercritical carbon dioxide.
Updated On: Oct 1, 2026
- Benzene
- Carbon tetrachloride
- Perchloroethylene
- Supercritical \(\text{CO}_2\)
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Verified By Collegedunia
The Correct Option is D
Solution and Explanation
Step 1: Recall green chemistry
Dry cleaning used tetrachloroethene (perchloroethylene) and CCl\(_4\), which are toxic and pollute groundwater. Benzene is carcinogenic.
Step 2: Alternative
Liquid or supercritical CO\(_2\) with a detergent is non-toxic, recyclable and leaves no harmful waste. Option (D).
Final Answer:
Supercritical CO\(_2\) is the green solvent, option (D). \[ \boxed{\text{(D)}} \]
Dry cleaning used tetrachloroethene (perchloroethylene) and CCl\(_4\), which are toxic and pollute groundwater. Benzene is carcinogenic.
Step 2: Alternative
Liquid or supercritical CO\(_2\) with a detergent is non-toxic, recyclable and leaves no harmful waste. Option (D).
Final Answer:
Supercritical CO\(_2\) is the green solvent, option (D). \[ \boxed{\text{(D)}} \]
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