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Q.

Which of the following are the harmful effects of nitrogen oxide?

I. It retards the rate of photosynthesis.
II. It causes respiratory disease in children.
III. It is toxic to living tissues,

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a

Both I and II

b

Both II and III

c

I, II and III

d

Both I and III

answer is C.

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Detailed Solution

Higher concentrations of No2 damage the leaves of plants and retard the rate of photosynthesis. NO, is a lung irritant that can lead to an acute respiratory disease in children. It is toxic to living tissues also.

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