R

Ravi Chauhan • 11.26K Points
Tutor II 

Q. The nitrogen molecules present in air can be converted into nitrates and nitrites by

  • (A) a biological process of nitrogen fixing bacteria present in soil
  • (B) a biological process of carbon fixing factor present in soil
  • (C) any of the industries manufacturing nitrogenous compounds
  • (D) the plants used as cereal crops in field
Correct Answer - Option (A)
Share

Discusssion

Login to discuss.

Related MCQs