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UPSC Chemistry Environmental Chemistry / पर्यावरणीय रसायन Question Bank Environmental Chemistry

  • question_answer
          Consider the following chemicals: [IAS Prelim]
    1. Benzene
    2. Carbon tetrachloride
    3. Sodium carbonate
    4. Trichloroethylene
    Which of the above/is are used as dry cleaning chemical?

    A) 1 only              

    B)          2 only

    C) 1, 2 and 4 only   

    D)          1, 2, 3 and 4

    Correct Answer: C

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