1.
The following substance are air pollutants except
fertilizer.
sulphur(Iv) oxide.
dust.
exhaust fumes
2.
Excessive amount of nitrogen in the soil leads to
proper growth of plants.
increased photosynthesis in plants.
delayed maturity of crops.
well-developed stems of crops.
3.
Which of the following pollutants affect weather conditions?
I. Sulphur dioxide
II. Ozone
III. CFC
I and II only
I and III only
II and III only
I, II and III
4.
Oil dipped on the surface of water bodies kills mosquito larvae through
dehydration
poisoning
starvation
suffocation
5.
Which of the following pollutants cause(s) acid rain?
I. CO2
II. NO2
III. SO3
I only
II only
II and III only
I, II and III
6.
Which of the following substances is hazardous?
CO
CO₂
Ne
He
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