Environment MCQ UPSC. We covered all the Environment MCQ UPSC in this post for free so that you can practice well for the exam.
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MCQ on Environment for UPSC Students
Accumulation of non-biodegradable pesticides in the food chain in increasing amounts at each higher trophic level is known as
(a) Eutrophication
(b) Pollution
(c) Biomagnification
(d) Accumulation
Option c – Biomagnification
Which of the following is biodegradable?
(a) Plastic mugs
(b) Leather belts
(c) Silver foil
(d) Iron nails
Option b – Leather belts
Which of the following is non-biodegradable?
(a) Wool
(b) Nylon
(c) Animal bones
(d) Tea leaves
Option b – Nylon
Which is the odd one out
(a) Newspaper
(b) glass bottles
(c) pesticides
(d) polythene bags
Option a – Newspaper
The biological methods of getting rid of waste is/are :
(a) Bioplastics
(b) Biological manure formation
(c) Bioremediation
(d) All of these
Option d – All of these
Burning of coal and petroleum will
(a) Cause global warming
(b) Release CO2
(c) Both (a) and (b)
(d) None of the above
Option c – Both (a) and (b)
An Ecosystem has
(a) only one food chain goes from producer to consumer
(c) a Special food chain, for example, no link between the aquatic food chain with terrestrial
(d) None of above
The full form of a biocide BHC that acts as a biomagnifier
(a) Beta Hepto Chloride
(b) Benzene Hepto Carbonate
(c) Benzene Hexa chloride
(d) Beta Hexa Carbonate
Option c – Benzene Hexa chloride
Which of the following are environment-friendly practices?
(a) Carrying cloth bags to put purchases in while shopping
(b) Switching off unnecessary lights and fans
(c) Walking to school instead of getting your mother to drop you on her scooter
(d) All of the above
Option d – All of the above
Select the most dangerous pollutant
(a) CO
(b) SO₂
(c) NO₂
(d) CO₂
Option a – CO
The presence of which of the following pollutants in the atmosphere has caused damage to the Taj Mahal?
(a) CO₂
(b) SO2
(c) Pb particles
(d) Radioactive disintegrations
Option b – SO2
A food chain comprising birds, green plants, fish, and man. The concentration of harmful chemicals entering the food chain will be maximum in
(a) green plants
(b) man
(c) birds
(d) fish
Option b – man
The first link in any food chain is usually green plants because
(a) they are widely distributed
(b) they are fixed in one place in the soil
(c) they alone have the capacity to synthesize food using sunlight
(d) there are more herbivores than carnivores
Option c – they alone have the capacity to synthesize food using sunlight
Which of the following statements about the food chain and energy flow through the ecosystem is false?
(a) Food webs include two or more food chains.
(b) All organisms that are not producers are consumers.
(c) A single organism can feed at several trophic levels.
(d) Detritivores feed at all trophic levels except the producer level.
(e) The lower the trophic level at which an organism feeds, the more energy is available.
Option d – Detritivores feed at all trophic levels except the producer level
Which of food the following is a logical sequence chain
(a) producer → consumer→ decomposer
(b) producer→ decomposer → consumer
(c) consumer → producer → decomposer
(d) decomposerproducer → consumer
Option a – producer → consumer→ decomposer
Which one of the following will undergo the fastest biodegradation?
(a) Mango seed
(b) Wood
(c) Mango peel
(d) Mango pulp
Option d – Mango pulp
In an ecosystem, herbivores represent
(a) producers
(b) primary consumers
(c) secondary consumers
(d) decomposers
Option b – primary consumers
The trophic level in an ecosystem represents
(a) oxygen level
(b) water level
(c) energy level
(d) salt level
Option c – energy level
Which of the following is biodegradable?
(a) Plastic
(b) Steel
(c) Paper
(d) Copper wires
Option c – Paper
One of these gases does not work to accelerate the greenhouse effect
(a) CFCs
(b) CO₂
(c) O2
(d) N₂O
Option c – O2
The chemical notation of ozone is
(a) CFCs
(b) O₂O
(c) O3
(d) Both (b) & (c)
Option c – O3
UV light radiation is harmful to us
(a) It can cause skin cancer
(b) It can cause mutations in our genes
(c) It can affect our eyes
(d) All of the above.
Option d – All of the above
The depletion of the ozone layer is due to pollutants except :
(a) CFCs
(b) O₂
(c) CCl4
(d) CH3CCI3
Option d – CH3CCl3
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