Human Reproduction Question 392
Question: Acid rain is caused by or recent reports of acid rain in some industrial cities are due to the effect of atmospheric pollution by [MP PMT 1987, 90; BHU 1989; CPMT 1989; CBSE PMT 1988, 89; KCET 1994; EAMCET 1995; Pb. PMT 2004]
Options:
A) Excessive release of $ CO_2 $ by burning of fuels like wood and charcoal, cutting of forests and increased animal population
B) Excessive release of $ NO_2 $ and $ SO_2 $ in atmosphere by burning of fossil fuel
C) Excessive release of $ NH_3 $ by industrial plants and coal gas
D) Excessive release of $ CO $ in atmosphere by incomplete combustion of coke, charcoal and other carbonaceous fuel in paucity of oxygen
Show Answer
Answer:
Correct Answer: B
Solution:
When $ SO_2 $ pollution in air is much higher.
Sometimes, $ SO_2 $ mixes in the air with small particles of metals near the factories and gets oxidised into sulphur trioxide $ SO_3 $ .
These gases are harmful and they react with water to form sulphuric acid $ ( H_2SO_4 ) $ or sulphurous acid $ ( H_2SO_3 ) $ and come down to earth with rain water; it is called acid rain or acid precipitation.
BETA
