ecology and environment awareness - Category wise Question and Answer Practice Test with Solutions

ecology and environment awareness PRACTICE TEST [1 - EXERCISES]

set 1

Question : 6

Acid rain is caused due to increase in concentration of (in atmosphere)

a) CO and CO2

b) CO and SO3

c) SO2 and NO2

d) O3 and dust

Answer: (c)

The main precursors of acid rain are SO2 and NO2 in the atmosphere which form H2 SO4 (Sulphuric acid) and HNO3 (nitric acid) with H2O and these come down with rain.

Such rains are called acid rains.

Question : 7

Which one of the following is not a gaseous biogeochemical cycle in ecosystem ?

a) Phosphorus cycle

b) Nitrogen cycle

c) Sulphur cycle

d) Carbon cycle

Answer: (a)

Phosphorus is mostly used as phosphate. Its reservoir pool is phosphate rocks while cycling pool is soil for terrestrial ecosystems and water for aquatic ecosystems.

Question : 8

Human population growth ________.

a) is currently in a logistic phase

b) is currently exponential

c) has an S-shaped curve

d) has reached carrying capacity

Answer: (b)

The exponential growth model virtually describes the population explosion of humans.

Question : 9

Which National park is the new home of the Indian onehorned rhinoceros ?

a) Jim Corbett

b) Kanha

c) Dudhwa

d) Bandhavgarh

Answer: (c)

Question : 10

Which constituent of the atmosphere is likely to change if the forest cover is removed ?

a) CO2 level is increased

b) O2 level is significantly increases

c) O2 level is increased

d) CO2 level is significantly decreased

Answer: (a)

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1766 ecology and environment awareness based general science mcq set 1 question answer with explanation pdf
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