Pollution (air, water, soil), greenhouse effect, ozone depletion, deforestation, e-waste.
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Q1 · Environmental Issues (Class 12) · EASY
Which of the following gases is primarily responsible for the greenhouse effect leading to global warming?
Q2 · Environmental Issues (Class 12) · MEDIUM
Catalytic converters in automobiles reduce air pollution by converting harmful gases into less harmful substances. Which of the following conversions takes place in a catalytic converter?
Q3 · Environmental Issues (Class 12) · HARD
The Montreal Protocol, signed in 1987, was an international agreement to phase out the production of certain chemicals that deplete the ozone layer. The protocol was particularly successful in reducing the atmospheric concentration of chlorofluorocarbons (CFCs). Which of the following best explains why CFCs are particularly harmful to the ozone layer?