Environmental Science and Ecology - Single MCQs (Page 4)

Sponsored
Q31. BOD test of biological oxygen demand test is made for measuring...Q32. In case COâ‚‚ of earth's atmosphere disappears, the temperature of earth's surfa...Q33. Ozone layer is formed in which zone of atmosphere...Q34. All organic substance found in the biosphere necessarily contain...Q35. In the environment, ozone is known for its...Q36. <u>Good ozone</u> is found in the...Q37. Biochemical Oxygen Demand ( BOD ) in a river water...Q38. Which one of the following pairs is mismatched...Q39. A major component of gobar gas is...Q40. Which of the following is a secondary pollutant...