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  4. Ecology And Environment

SSC Ecology And Environment Sample Paper NCERT Sample Paper-3

  • question_answer
    Which of the following pollutant increases the hardness of water?

    A)  \[{{H}_{2}}S{{O}_{4}}\]       

    B)  DDT

    C)  Pb

    D)                     Cu.

    Correct Answer: A

    Solution :

    [a] Sulfuric acid is a highly corrosive strong mineral acid with the molecular formula \[{{H}_{2}}S{{O}_{4}}.\]It is a pungent-ethereal, colourless to slightly yellow viscous liquid which is soluble in water at all concentrations.


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