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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]

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