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  3. 9th Class
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  5. Improvement in food resources

9th Class Science Improvement in food resources Question Bank Improvement in Food Resources

  • question_answer
    Which of these methods is used to kill pests?

    A) Retting              

    B)        Winnowing

    C) Fumigation                      

    D) Dusting

    Correct Answer: C

    Solution :

    Fumigation is the using of chemicals in the storage of grains to kill pests.


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