8 JEE Main 2020 Environmental Chemistry previous-year questions with verified answers and step-by-step solutions.
These are the JEE Main 2020 previous-year questions from the Environmental Chemistry chapter of Chemistry. Each links to a full solution with a verified answer key. To see the whole chapter across all years, visit the Environmental Chemistry chapter hub.
The processes of calcination and roasting in metallurgical industries, respectively, can lead to :
Thermal power plants can lead to :
The condition that indicates a polluted environment is:
Biochemical Oxygen Demand B O D is the amount of oxygen required (in p p m ):
Among the gases a - e , the gases that cause greenhouse effect are: a C O 2 b H 2 O c C F C s d O 2 e O 3
10.30 m g of O 2 is dissolved into a liter of sea water of density 1.03 g / m L . The concentration of O 2 in ppm is __…
The incorrect statement(s) among (a) – (d) regarding acid rain is (are): a) It can corrode water pipes (b) It can…
The statement that is not true about ozone is :