Complete Environment & Ecology MCQs for UPSC, PSC and SSC(Part-3)

Which species are known as ‘umbrella species’ in conservation?
(A) Insects
(B) Amphibians
(C) Large mammals
(D) Small rodents
Answer: (C)

Which gas is mainly responsible for acidification of oceans?
(A) Oxygen
(B) Carbon dioxide
(C) Sulphur dioxide
(D) Methane
Answer: (B)

Which is the largest carbon sink on Earth?
(A) Atmosphere
(B) Forests
(C) Oceans
(D) Soil
Answer: (C)

Which of the following is not a greenhouse gas?
(A) Carbon dioxide
(B) Methane
(C) Sulphur hexafluoride
(D) Nitrogen
Answer: (D)

Which international body releases the ‘Global Environment Outlook’?
(A) IPCC
(B) UNEP
(C) IUCN
(D) WWF
Answer: (B)

Which of these is an example of ex-situ conservation?
(A) Sacred groves
(B) National parks
(C) Botanical gardens
(D) Biosphere reserves
Answer: (C)

The phenomenon of increasing concentration of non-biodegradable substances along the food chain is called –
(A) Bioaccumulation
(B) Biomagnification
(C) Bioremediation
(D) Biodilution
Answer: (B)

Which international organization deals with the conservation of migratory species?
(A) CITES
(B) CMS
(C) CBD
(D) UNFCCC
Answer: (B)

Which ecosystem has the highest biodiversity?
(A) Grassland
(B) Desert
(C) Tropical rainforest
(D) Arctic tundra
Answer: (C)

Which of these causes ozone depletion?
(A) Nitrogen dioxide
(B) Carbon dioxide
(C) Methane
(D) CFCs
Answer: (D)

Which protocol replaced the Kyoto Protocol after 2020?
(A) Rio Agreement
(B) Paris Agreement
(C) Montreal Accord
(D) Cancun Summit
Answer: (B)

The main source of soil pollution is –
(A) Overgrazing
(B) Industrial waste
(C) Landslide
(D) Waterlogging
Answer: (B)

Which species is the state animal of Madhya Pradesh?
(A) Lion
(B) Tiger
(C) Barasingha
(D) Asiatic Wild Ass
Answer: (C)

Which of the following is not a fossil fuel?
(A) Coal
(B) Oil
(C) Uranium
(D) Natural gas
Answer: (C)

Which one is the largest mangrove forest in the world?
(A) Amazon
(B) Congo Basin
(C) Sunderbans
(D) Mekong Delta
Answer: (C)

Which Act in India aims to protect endangered animals?
(A) Wildlife Protection Act, 1972
(B) Environmental Protection Act, 1986
(C) Forest Conservation Act, 1980
(D) Biodiversity Act, 2002
Answer: (A)

Which region of the earth is known as the “lungs of the planet”?
(A) Taiga
(B) Amazon Rainforest
(C) Gobi Desert
(D) Tundra
Answer: (B)

What percentage of the Earth’s surface is covered by oceans?
(A) 50%
(B) 60%
(C) 71%
(D) 80%
Answer: (C)

The largest source of freshwater on Earth is –
(A) Rivers
(B) Glaciers
(C) Lakes
(D) Underground water
Answer: (B)

Which of the following is a non-renewable energy source?
(A) Solar
(B) Wind
(C) Biomass
(D) Coal
Answer: (D)

Which term refers to planting trees to reclaim desert land?
(A) Agroforestry
(B) Social forestry
(C) Afforestation
(D) Desertification
Answer: (C)

Which of the following is a threatened species?
(A) House Sparrow
(B) Indian Bustard
(C) Domestic Dog
(D) Cow
Answer: (B)

Which of these is an in-situ method of conserving biodiversity?
(A) Zoo
(B) Botanical Garden
(C) Wildlife Sanctuary
(D) Seed Bank
Answer: (C)

Which of the following countries does NOT have a part of the Amazon Rainforest?
(A) Brazil
(B) Colombia
(C) Argentina
(D) Peru
Answer: (C)

Which river has the highest silt load in the world?
(A) Ganga
(B) Amazon
(C) Nile
(D) Brahmaputra
Answer: (A)

In which year was the Forest Conservation Act passed in India?
(A) 1972
(B) 1980
(C) 1986
(D) 1992
Answer: (B)

Which international body is responsible for the Ramsar Convention?
(A) UNEP
(B) IUCN
(C) UNFCCC
(D) UNESCO
Answer: (B)

Which of these is the correct sequence for waste management hierarchy?
(A) Reuse > Reduce > Recycle
(B) Reduce > Reuse > Recycle
(C) Recycle > Reduce > Reuse
(D) Reduce > Recycle > Reuse
Answer: (B)

Which of these is a carbon-neutral country?
(A) Bhutan
(B) India
(C) China
(D) USA
Answer: (A)

Which act controls hazardous waste management in India?
(A) Forest Conservation Act
(B) Wildlife Protection Act
(C) EPA, 1986
(D) Water Act, 1974
Answer: (C)

Which one is an example of a producer in a food chain?
(A) Deer
(B) Lion
(C) Grass
(D) Wolf
Answer: (C)

Which event led to the awareness about environmental protection worldwide?
(A) Stockholm Conference 1972
(B) Rio Earth Summit 1992
(C) Kyoto Protocol 1997
(D) Paris Agreement 2015
Answer: (A)

Which region is known for the highest biodiversity on Earth?
(A) Coral Reefs
(B) Deserts
(C) Arctic Circle
(D) Grasslands
Answer: (A)

The natural environment does not include –
(A) Mountains
(B) Rivers
(C) Buildings
(D) Forests
Answer: (C)

Which Indian festival promotes environmental awareness related to trees?
(A) Diwali
(B) Holi
(C) Van Mahotsav
(D) Dussehra
Answer: (C)

What is the process of converting waste into reusable material called?
(A) Recycling
(B) Bioremediation
(C) Composting
(D) Vermiculture
Answer: (A)

Which of these is a biodegradable pollutant?
(A) Plastic
(B) Iron
(C) Sewage
(D) DDT
Answer: (C)

Which pollutant mainly causes the greenhouse effect?
(A) Nitrogen dioxide
(B) Carbon dioxide
(C) Lead
(D) CFCs
Answer: (B)

The goal of Kyoto Protocol was to –
(A) Reduce biodiversity loss
(B) Reduce greenhouse gas emissions
(C) Control ocean acidification
(D) Stop desertification
Answer: (B)

Which forest is famous for rubber plantations?
(A) Mangrove
(B) Tropical rainforest
(C) Taiga
(D) Deciduous forest
Answer: (B)

Which of the following is NOT a function of wetlands?
(A) Water purification
(B) Flood control
(C) Carbon storage
(D) Oil drilling
Answer: (D)

Which year was the Paris Climate Agreement adopted?
(A) 2012
(B) 2015
(C) 2018
(D) 2021
Answer: (B)

The Chipko Movement originated in –
(A) Rajasthan
(B) Himachal Pradesh
(C) Uttarakhand
(D) Gujarat
Answer: (C)

Which of the following activities causes water logging and salinization?
(A) Drip irrigation
(B) Excessive flood irrigation
(C) Organic farming
(D) Crop rotation
Answer: (B)

Which of the following biomes has the coldest climate?
(A) Desert
(B) Rainforest
(C) Tundra
(D) Savanna
Answer: (C)

Which Indian island is famous for coral reefs?
(A) Andaman
(B) Lakshadweep
(C) Sunderbans
(D) Majuli
Answer: (B)

Which gas is most responsible for photochemical smog?
(A) Ozone
(B) Methane
(C) Carbon monoxide
(D) Nitrogen dioxide
Answer: (D)

Which environmental movement opposed the construction of Tehri Dam?
(A) Narmada Bachao Andolan
(B) Chipko Movement
(C) Save Silent Valley
(D) Tehri Dam Protests
Answer: (D)

Which initiative is related to the conservation of snow leopards?
(A) Project Tiger
(B) Global Snow Leopard and Ecosystem Protection Program
(C) Project Elephant
(D) Coral Triangle Initiative
Answer: (B)

Which agency publishes the “State of India’s Environment” report?
(A) CPCB
(B) UNEP
(C) CSE (Centre for Science and Environment)
(D) WWF
Answer: (C)

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