UPSC General Studies Solved Paper - General Studies-2014

  • question_answer
    There is some concern regarding the nanoparticles of some chemical elements that are used by the industry in the manufacture of various products. Why?
    1. They can accumulate in the environment and contaminate water and soil.
    2. They can enter the food chains.
    3. They can trigger the production of free radicals.
    Select the correct answer using the codes given below.

    A)  1 and 2

    B)  Only 3

    C)  1 and 3           

    D)  All of these

    Correct Answer: D

    Solution :

    Exp. [d] Nanoparticles of chemical elements have properties like accumulation in environment because of its complex structure. They also have the capability to enter food chains and to trigger the production of free radicals.

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