In this page you can learn and practice General Knowledge Questions and Answers on Environment Science with detailed solution. These questions and answers will help you to prepare for various competitive exams (UPSC, SSC, PSC, Bank, Railway, Insurance), Entrance Test (CAT, MAT, XAT) and Job interviews.
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Almost 99% of clean air consists of two gases which are;
|A. Nitrogen and Carbon Dioxide.|
|B. Oxygen and Argon.|
|C. Oxygen and Carbon Dioxide.|
|D. Nitrogen and Oxygen.|
Ozone layer exists in;
Ozone layer is being depleted by;
|B. Sulphur dioxide.|
|C. Carbon monoxide.|