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SSC Sample Paper SSC CHSL (10+2) Sample Test Paper-4

  • question_answer
    The substance that causes the worst air pollution is

    A)  sulphur dioxide 

    B)  carbon dioxide

    C)  carbon monoxide  

    D)         smoke

    Correct Answer: C

    Solution :

     Carbon monoxide (CO) - is colorless, odorless, non-irritating but very poisonous gas. It is a product by incomplete combustion of fuel such as natural gas, coal or wood. Vehicular exhaust is a major source of carbon monoxide.


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