Which layer of the atmosphere contains the ozone layer?
(A) Troposphere
(B) Stratosphere
(C) Mesosphere
(D) Thermosphere
Answer: (B)

What is the main cause of acid rain?
(A) CO2 and CO
(B) SO2 and NOx
(C) CH4 and NH3
(D) CFCs and O3
Answer: (B)

Which of the following is a greenhouse gas?
(A) Oxygen
(B) Nitrogen
(C) Methane
(D) Argon
Answer: (C)

Which protocol is associated with the control of ozone-depleting substances?
(A) Kyoto Protocol
(B) Montreal Protocol
(C) Basel Convention
(D) Stockholm Convention
Answer: (B)

Which gas is primarily responsible for global warming?
(A) Oxygen
(B) Nitrous oxide
(C) Carbon dioxide
(D) Sulfur dioxide
Answer: (C)

Which species is considered an indicator of environmental pollution?
(A) Elephant
(B) Tiger
(C) Lichen
(D) Peacock
Answer: (C)

Which forest type is found in areas with over 200 cm rainfall?
(A) Tropical Thorn Forest
(B) Deciduous Forest
(C) Tropical Evergreen Forest
(D) Temperate Forest
Answer: (C)

Which organization publishes the Red Data Book?
(A) WHO
(B) UNEP
(C) IUCN
(D) WWF
Answer: (C)

The term ‘Biodiversity Hotspot’ was given by –
(A) Norman Myers
(B) Charles Darwin
(C) E.O. Wilson
(D) Rachel Carson
Answer: (A)

Which Indian biosphere reserve is included in UNESCO’s World Network?
(A) Sunderbans
(B) Gulf of Mannar
(C) Nilgiri
(D) Nanda Devi
Answer: (C)

Which act was enacted to prevent air pollution in India?
(A) EPA, 1986
(B) Forest Act, 1927
(C) Air Act, 1981
(D) Water Act, 1974
Answer: (C)

The headquarters of UNEP is located in –
(A) Geneva
(B) Nairobi
(C) Paris
(D) New York
Answer: (B)

The term ‘Ecology’ was coined by –
(A) Ernst Haeckel
(B) Charles Darwin
(C) Alexander Humboldt
(D) Aristotle
Answer: (A)

The largest source of renewable energy in India is –
(A) Solar
(B) Wind
(C) Hydropower
(D) Biomass
Answer: (C)

Silent Valley is located in –
(A) Tamil Nadu
(B) Kerala
(C) Karnataka
(D) Maharashtra
Answer: (B)

The Kyoto Protocol deals with –
(A) Biodiversity conservation
(B) Climate change
(C) Endangered species
(D) Ozone depletion
Answer: (B)

Which one of the following is a Ramsar site in India?
(A) Gir Forest
(B) Keoladeo National Park
(C) Bandipur National Park
(D) Corbett National Park
Answer: (B)

Which of the following gases is not a greenhouse gas?
(A) Water vapour
(B) Methane
(C) Nitrogen
(D) Ozone
Answer: (C)

What is the name of the international treaty to conserve wetlands?
(A) Kyoto Protocol
(B) Ramsar Convention
(C) Paris Agreement
(D) Nagoya Protocol
Answer: (B)

Which of the following causes eutrophication in water bodies?
(A) Oil spill
(B) Plastic waste
(C) Excess nitrates and phosphates
(D) Heavy metals
Answer: (C)

Which one is a man-made ecosystem?
(A) Forest
(B) Pond
(C) Aquarium
(D) Grassland
Answer: (C)

Carbon Trading is associated with –
(A) Wetland preservation
(B) Forest rights
(C) Emission reduction
(D) Eco-tourism
Answer: (C)

Which of the following is a keystone species in Indian forests?
(A) Elephant
(B) Peacock
(C) Langur
(D) Deer
Answer: (A)

Chipko Movement is related to –
(A) River conservation
(B) Forest conservation
(C) Air pollution
(D) Wildlife protection
Answer: (B)

Which region is most prone to desertification in India?
(A) Western Rajasthan
(B) Eastern Uttar Pradesh
(C) Coastal Odisha
(D) Western Ghats
Answer: (A)

Which of the following is a renewable resource?
(A) Fossil fuel
(B) Coal
(C) Wind
(D) Natural gas
Answer: (C)

Which of these is a major cause of biodiversity loss?
(A) Earthquakes
(B) Habitat destruction
(C) Volcanic eruptions
(D) Sea level rise
Answer: (B)

Agenda 21 was adopted at –
(A) Kyoto
(B) Paris
(C) Rio de Janeiro
(D) Stockholm
Answer: (C)

Which energy source is associated with nuclear fission?
(A) Thorium
(B) Biogas
(C) Wind
(D) Solar
Answer: (A)

Mangroves are mainly found in –
(A) Mountains
(B) Deserts
(C) River valleys
(D) Coastal areas
Answer: (D)

Which of the following pollutants is responsible for Minamata disease?
(A) Lead
(B) Mercury
(C) Arsenic
(D) Nitrate
Answer: (B)

Which of the following is a biodegradable pollutant?
(A) Plastic
(B) Pesticide
(C) DDT
(D) Sewage
Answer: (D)

Which is not a function of the ecosystem?
(A) Productivity
(B) Decomposition
(C) Nutrient cycling
(D) Deforestation
Answer: (D)

Carrying capacity refers to –
(A) Maximum population that an ecosystem can support
(B) Number of vehicles a road can hold
(C) Weight a forest can hold
(D) Limit of pollution
Answer: (A)

Which gas is absorbed by plants during photosynthesis?
(A) Nitrogen
(B) Oxygen
(C) Carbon dioxide
(D) Sulphur dioxide
Answer: (C)

Which is the most abundant greenhouse gas?
(A) Methane
(B) Nitrous oxide
(C) Water vapour
(D) Carbon dioxide
Answer: (C)

The ‘Eco-Sensitive Zones’ are created under which act?
(A) EPA, 1986
(B) Forest Act, 1927
(C) Wildlife Protection Act, 1972
(D) Biodiversity Act, 2002
Answer: (A)

Which state has the highest forest cover in India by area?
(A) Madhya Pradesh
(B) Arunachal Pradesh
(C) Chhattisgarh
(D) Odisha
Answer: (A)

The Paris Agreement deals with –
(A) Wetlands
(B) Climate change
(C) Biodiversity
(D) Desertification
Answer: (B)

Which organization releases the ‘Living Planet Report’?
(A) UNEP
(B) WWF
(C) IUCN
(D) IPCC
Answer: (B)

Which is a major source of marine pollution?
(A) Volcanic eruption
(B) Sewage discharge
(C) Mangrove deforestation
(D) Coral bleaching
Answer: (B)

Which of the following is not a renewable energy source?
(A) Solar
(B) Geothermal
(C) Wind
(D) Coal
Answer: (D)

The process by which plants release water vapour is called –
(A) Photosynthesis
(B) Transpiration
(C) Respiration
(D) Condensation
Answer: (B)

Which of these is the correct sequence in the food chain?
(A) Producer → Consumer → Decomposer
(B) Decomposer → Producer → Consumer
(C) Consumer → Producer → Decomposer
(D) Producer → Decomposer → Consumer
Answer: (A)

Which gas is used in fire extinguishers and also a greenhouse gas?
(A) Ozone
(B) Carbon monoxide
(C) Carbon dioxide
(D) Nitrous oxide
Answer: (C)

Which region is most affected by coral bleaching?
(A) Amazon Rainforest
(B) Sunderbans
(C) Himalayas
(D) Great Barrier Reef
Answer: (D)

The ‘Project Tiger’ was launched in –
(A) 1970
(B) 1973
(C) 1985
(D) 1990
Answer: (B)

Which of the following is not a part of the lithosphere?
(A) Soil
(B) Rocks
(C) Crust
(D) Water
Answer: (D)

Which term is used for species found only in a particular area?
(A) Extinct
(B) Endemic
(C) Exotic
(D) Rare
Answer: (B)

Which is the most recent international climate treaty?
(A) Montreal Protocol
(B) Kyoto Protocol
(C) Paris Agreement
(D) Doha Agreement
Answer: (C)