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    Question

    Which of the following substances are

    ozone-depleting? Select the correct answer from the code given below. ┬а ┬а ┬а ┬а ┬а ┬а ┬а ┬а I.┬а┬а┬а┬а┬а┬а┬а┬а Chlorofluorocarbons ┬а┬а┬а┬а┬а┬а┬а┬а┬а┬а┬а┬а II.┬а┬а┬а┬а┬а┬а┬а┬а Halones ┬а┬а┬а┬а┬а┬а┬а┬а┬а┬а┬а III.┬а┬а┬а┬а┬а┬а┬а┬а Carbon tetrachloride ┬а┬а┬а┬а┬а┬а┬а┬а┬а┬а IV.┬а┬а┬а┬а┬а┬а┬а┬а 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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