Question: Ozone of found in………………….. A. mesosphere B. ionosphere C. stratosphere D. exosphere Answer» c. stratosphere Note: The above multiple-choice question is for all general and Competitive Exams in India. 

Question: Causes pollution is/are…………………… A. human activities B. factories C. volcanoes D. all of the above Answer» d. all of the above Note: The above multiple-choice question is for all general and Competitive Exams in India.