JEE Main 2016 · 10 Apr · Shift 1 · Chemistry Q50

ChemistrySingle correct+4 / -1Question 50 of 90

Which one of the following substances used in dry cleaning is a better strategy to control environmental pollution ?

Tetrachloroethylene

Carbon dioxide

Sulphur dioxide

Nitrogen dioxide

Answer and worked solution

Official answer: B

Liquid (supercritical) $\ce{CO2}$ is the green replacement for chlorinated solvents such as tetrachloroethylene in dry cleaning.

JEE Main 2016 · 10 Apr · Shift 1, Chemistry question 50