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  3. 7th Class
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  5. Water: A Precious Resource

7th Class Science Water: A Precious Resource Question Bank Water : A Precious Resource

  • question_answer
    DIRECTIONS: Read the following two statements carefully and choose the correct options. (i) Boiling removes soluble impurities from water. (ii) Fertilizers and sewage cause water pollution. (iii) Chlorination cleans and removes insoluble impurities from water.

    A) Statements (i) and (iii) are incorrect but (ii) is correct.

    B) Statements (i) and (ii) are incorrect but (iii) is correct.

    C) All statements are correct.

    D) All statements are incorrect.

    Correct Answer: A

    Solution :

    Chlorination is done to kill germs and bacteria in water.


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