Shankar IAS Environment Chapter Wise MCQ. We covered all the Shankar IAS Environment Chapter Wise MCQ in this post for free so that you can practice well for the exam.
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MCQ on Environment Chapter Wise for Students
The nitrogen cycle involves bacteria capable of changing proteins to ammonia called
(a) bacteria of decay
(b) denitrifying bacteria
(c) nitrogen-fixing bacteria
(d) ammonifying bacteria
Option d – ammonifying bacteria
The phosphorus cycle is
(a) a gaseous cycle
(b) a perfect cycle
(c) an imperfect cycle
(d) partly gaseous and partly sedimentary
Option c – an imperfect cycle
The nitrogen content of the biosphere remains constant due to
(a) nitrogen fixation
(b) nitrogen cycle
(c) industrial pollution
(d) absorption of nitrogen
Option b – nitrogen cycle
Breaking down of rocks at or near the surface of the Earth by various physical, chemical, or biological processes results in the formation of ………
(a) nutrients
(b) soil
(c) minerals
(d) water
Option b – soil
Besides uneven heating of the atmosphere in different regions of the earth, other factors resulting in diverse atmospheric phenomena are
(a) rotation of the earth and mountain ranges coming in the paths of the winds.
(b) water vapors formed due to excessive heat getting into the air.
(c) air expands and cools as it rises up carrying the water vapors with it.
(d) All of these
Option d – All of these
The presence of high levels of pollutants in the atmosphere during cold weather leads to the formation of
(a) fog
(b) acid rains
(c) smog
(d) All of these
Option c – smog
All organisms require water to stay alive because
(a) all cellular processes take place in a water medium.
(b) biochemical reactions inside the body take place in an aqueous medium.
(c) substances are transported from one part of the body to other parts in a dissolved form.
(d) All of these
Option d – All of these
Sustainability and diversity of life are dependent on
(a) availability of water alone
(b) not only temperature, and the nature of soil but also the availability of water
(c) the nature of the soil
(d) temperature
Option b – not only temperature, and the nature of soil but also the availability of water
Soil conservation is the process where
(a) sterile soil is converted to fertile soil
(b) soil is aerated
(c) soil erosion is allowed
(d) soil is protected against loss
Option d – soil is protected against loss
Soil pollution is
(a) the removal of useful components or the addition of harmful ingredients.
(b) adversely affecting the fertility of the soil.
(c) killing the diversity of organism that live in it.
(d) All of these
Option d – All of these
Humus is a major factor in deciding soil structure because
(a) soil becomes more porous
(b) allows water and air to penetrate deep underground
(c) Both (1) and (2)
(d) None of these
Option c – Both (1) and (2)
Recent reports of acid rain in some industrial cities are due to the effect of atmospheric pollution by
(a) excessive release of CO₂ by burning fuels like wood and charcoal, cutting of forests, and increased animal population.
(b) excessive release of NO2 and SO₂ in the atmosphere by burning fossil fuel.
(c) excessive release of NH3 by industrial plants and coal gas.
(d) excessive release of CO in the atmosphere by incomplete combustion of coke, charcoal, and other carbonaceous fuel.
Option b – excessive release of NO2 and SO₂ in the atmosphere by burning fossil fuel
The average temperature on earth remains fairly steady because
(a) the atmosphere slows down the escape of heat into outer space during the night.
(b) the atmosphere prevents the sudden increase in temperature during day time.
(c) air is a bad conductor of heat.
(d) All of these
Option d – All of these
The stratospheric ozone depletion leads to
(a) global warming
(b) an increase in the incidence of skin cancers
(c) forest fires
(d) All the above
Option d – All the above
Biological Oxygen Demand (BOD) is a measure of
(a) industrial wastes poured into water bodies.
(b) the extent to which water is polluted with organic compounds.
(c) amount of carbon monoxide inseparably combined with hemoglobin.
(d) amount of oxygen needed by green plants during the night.
Option b – the extent to which water is polluted with organic compounds
The major source(s) of carbon for living things is/are
(a) coal, oil, and natural gas
(b) plants
(c) CO₂ in the atmosphere and oceans
(d) methane in the atmosphere
Option c – CO₂ in the atmosphere and oceans
Lichens while growing on the surface of rocks release certain substances
(a) that erode the rock surface to powder
(b) that enters into the cracks
(c) that grows into more organisms
(d) None of these
Option a – that erode the rock surface to powder
The type of soil is decided by the average size of particles, but the quality of soil is decided by
(a) uantity of particles
(b) amount of humus
(c) microscopic organisms
(d) amount of humus and the microscopic organisms found in it
Option d – amount of humus and the microscopic organisms found in it
Expansion of certain parts of rocks due to heat during the day and contraction at night lead to
(a) the formation of cracks in the rocks
(b) the breaking of rocks
(c) the formation of cracks and ultimately the huge rocks breaking into smaller pieces
(d) formation of soil directly
Option c – the formation of cracks and ultimately the huge rocks breaking into smaller pieces
Water is helpful in the formation of soil as
(a) it enters into the cracks formed due to uneven heating and then freezes inside the rocks.
(b) flowing water wears away even hard rocks.
(c) fast flowing water crushes big and small rocks into smaller particles while flowing downstream.
(d) All of these
Option d – All of these
Besides water ………. also erode rocks and carries sand from one place to other.
(a) the sun
(b) strong winds
(c) living organisms
(d) plants
Option b – strong winds
Conservation is
(a) protection of natural resources
(b) management of natural resources
(c) proper use of natural resources
(d) All the above
Option d – All the above
The largest amount of fresh water is found in
(a) lakes and streams
(b) underground
(c) polar ice and glaciers
(d) rivers
Option c – polar ice and glaciers
The major factor in causing global warming is ( Shankar IAS Environment Chapter Wise MCQ )
(a) an increase in oxygen concentration in the atmosphere.
(b) decrease in carbon dioxide concentration in the atmosphere.
(c) increase in carbon dioxide concentration in the atmosphere.
(d) decrease in atmospheric nitrogen.
Option c – increase in carbon dioxide concentration in the atmosphere
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