Soil Pollution MCQs

Soil pollution is driven by toxic chemicals, including herbicides used in warfare, which have long-lasting impacts on human health, the environment, and soil quality across extensive areas of forest and agricultural land. The primary cause of soil acidification is acid rain, but it is also influenced by prolonged leaching of base elements, microbial respiration, nitrification, excessive land use, the application of inorganic nitrogen fertilizers, and land drainage. These factors lead to the formation of H+ ions or CO2, which dissolve in soil water to create carbonic acid.

Which of the following serves as an indicator of atmospheric pollution?

(a) fern
(b) liverworts
(c) hornworts
(d) epiphytic lichens

In 1984, the Bhopal gas tragedy took place because methyl isocyanate

(a) reacted with ammonia
(b) reacted with water
(c) reacted with DDT
(d) reacted with CO2

The quantity of DDT at each trophic level in the food chain

(a) decreases
(b) remains the same
(c) increases
(d) changes

Negative soil pollution is

(a) reduction in soil productivity due to erosion and overuse
(b) reduction in soil productivity due to addition of pesticides and industrial wastes
(c) converting fertile land into hardened land by dumping ash, sludge, and garbage
(d) None of the above

Formation of London smog takes place in

(a) winter during daytime
(b) summer during daytime
(c) summer during morning time
(d) winter during morning time

The concentration of dissolved oxygen in cold water can go up to

(a) 14 ppm
(b) 8 ppm
(c) 10 ppm
(d) 16 ppm

Brewery and sugar factory waste alter the quality of a water body by increasing

(a) temperature
(b) turbidity
(c) pH
(d) COD and BOD

The layer of the atmosphere between 10 km to 50 km above sea level is called

(a) troposphere
(b) thermosphere
(c) stratosphere
(d) mesosphere

In a coal-fired power plant, electrostatic precipitators are installed to control the emission of

(a) SO2
(b) NO2
(c) SPM
(d) CO

Air pollution that occurs in sunlight is

(a) reducing smog
(b) acid rain
(c) oxidizing smog
(d) fog