Question

13. Photochemical smog is-
i. Poisonous ii. harmful for ozone layer iii. responsible for acid rain Which one of the following is correct?
a) i & ii b) i & iii
c) ii & iii d) i, ii & iii​

Answer 1

. Photochemical smog is-

i. Poisonous ii. harmful for ozone layer iii. responsible for acid rain Which one of the following is correct?

your answer is

a) i & ii