The part of the Earth where life exists,known as the biosphere,is composed of which components?

Approximately how many known derivatives of $CFC$ or $BFC$ (Bromofluorocarbons) are recognized as $ODS$ (Ozone Depleting Substances)?

Which of the following statements is $NOT$ true about acid rain?

Which of the following solvents reduces the environmental pollution?

Given below are two statements:
Statement $I:$ Classical smog occurs in cool humid climate. It is a reducing mixture of smoke,fog and sulphur dioxide.
Statement $II:$ Photochemical smog has components,ozone,nitric oxide,acrolein,formaldehyde,$PAN$ etc.
In the light of above statements,choose the most appropriate answer from the options given below:

Which of the following statements is $NOT$ in accordance with the fundamental principles of Green Chemistry?