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b. Prelims Paper (GS) Paper – 1

(UPSC 2013) 34. Which of the following adds / add nitrogen

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  • May 27, 2015 at 6:02 pm #6082
    Wonder Boy
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      34. Which of the following adds / add nitrogen to the soil?

      1. Excretion of urea by animals

      2. Burning of coal by man

      3. Death of vegetation

       

      Select the correct answer using the codes given below.

       

      (a) 1 only

      (b) 2 and 3 only

      (e) 1 and 3 only

      (d) 1, 2 and 3

       

      Solve & post answer with explanation below (Mobile Users – Click Visit Website). Login/Register  for  unmoderated reply and posts.

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