a. Smoke, fog and N2O3
b. Smoke, fog and O3
c. Smoke, fog and SO2
d. Smoke, fog and CH2=CH–CHO
Answer: (c)
Reducing smog = smoke + fog + SO2
a. Smoke, fog and N2O3
b. Smoke, fog and O3
c. Smoke, fog and SO2
d. Smoke, fog and CH2=CH–CHO
Answer: (c)
Reducing smog = smoke + fog + SO2