Q.
Consider the following chemicals:
I. Benzene
II. Carbon tetrachloride
III. Sodium carbonate
IV. Trichloroethylene
Which of the above/ is are used as dry cleaning chemical?
[A]
I only
[B]
II only
[C]
I, II and IV only
[D]
I, II, III and IV
Answer & Explanation
Option: [C]