Question

    Which of the following substances are

    ozone-depleting? Select the correct answer from the code given below.                 I.         Chlorofluorocarbons              II.         Halones             III.         Carbon tetrachloride            IV.         Hydrochlorofluorocarbon
    A I, II, and IV only Correct Answer Incorrect Answer
    B II and IV only Correct Answer Incorrect Answer
    C I, III and IV only Correct Answer Incorrect Answer
    D All of the above Correct Answer Incorrect Answer

    Solution

    All substances are ozone-depleting substance.

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