Environment notes pdf in English for IAS/IFS

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1. Definition of Environmental Science:

Environmental Science is the study of the interactions between humans and the natural world, including the physical, biological, and social aspects of the environment.
2. Ecosystems and Biodiversity:

Ecosystems are dynamic systems where living organisms interact with each other and their physical environment.
Biodiversity refers to the variety of life forms, including plants, animals, and microorganisms, within ecosystems.
3. Environmental Degradation:

This includes processes like pollution, deforestation, habitat destruction, and overexploitation of resources that negatively impact ecosystems and biodiversity.
4. Pollution:

Pollution refers to the introduction of harmful substances into the environment, such as air, water, or soil, leading to adverse effects on living organisms and ecosystems.
5. Climate Change:

Climate change is the long-term alteration of Earth’s average weather patterns due to factors like greenhouse gas emissions from human activities.
Global warming is a significant aspect of climate change, causing shifts in temperatures and weather patterns.
6. Conservation and Sustainable Practices:

Conservation involves the protection and preservation of natural resources and ecosystems to ensure their long-term viability.
Sustainable practices aim to meet current needs without compromising the ability of future generations to meet their needs.
7. Renewable and Non-renewable Resources:

Renewable resources, like solar energy and wind power, can be naturally replenished over time.
Non-renewable resources, such as fossil fuels (coal, oil, natural gas), are finite and deplete with use.
8. Environmental Impact Assessment (EIA):

EIA is a process that evaluates the potential environmental effects of proposed projects or activities, helping in decision-making and planning.
9. Waste Management:

Waste management involves the collection, disposal, and recycling of waste materials to reduce environmental pollution and health hazards.
10. Conservation of Natural Habitats:

Protecting natural habitats, such as forests, wetlands, and coral reefs, is vital for preserving biodiversity and maintaining ecosystem functions.
11. Environmental Policy and Regulation:

Governments and international organizations create policies and regulations to address environmental issues, set standards, and encourage sustainable practices.
12. Environmental Ethics:

Environmental ethics examines the moral and ethical dimensions of human interactions with the environment, considering the responsibilities to future generations and non-human species.
13. Environmental Education and Advocacy:

Raising awareness about environmental issues and promoting sustainable behaviors are essential components of environmental education and advocacy.
Environmental Science is an interdisciplinary field that draws on knowledge from various disciplines, including biology, chemistry, physics, geography, economics, sociology, and more. It seeks to address the challenges posed by human activities on the environment and find solutions for a more sustainable future.

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Important ENVIRONMENT Question And Answer

Q1.Which one of the following is an important strategy for the conservation of biodiversity?

(A) Wild Life Sanctuaries

(B) National Parks

(D) Biosphere Reserves

Ans.(D) Biosphere Reserves

Q2.Which one of the following trees is considered to be an environmental hazard?

(A) Eucalyptus

(B) Babool

(D) Amaltas

Ans.(A) Eucalyptus

Q3.The greenhouse effect is mostly caused by

(A) Ozone layer

(B) Moisture in the atmosphere

(D) Carbon dioxide in the atmosphere

Ans. (D) Carbon dioxide in the atmosphere

Q4.Which one of the following adopted “Agenda 21”?

(A) Kyoto Protocol

(B) Montreal Protocol

(D) First Earth Summit

Ans.(D) First Earth Summit

Q5.Which of the following is not a greenhouse gas?

(A) Nitrogen

(B) Methane

(D) Carbon dioxide

Ans.(A) Nitrogen

Q6.Which one of the following is the best source of generating electricity in India from the viewpoint of sustainable development?

(A) Atomic energy

(B) Coal

(D) Hydroelectricity

Ans.(D) Hydro electricity

Q7.The use of fossil fuels is responsible for the increase in the amount of which gas in the atmosphere?

(A) Argon

(B) Carbon dioxide

(D) Nitrogen

Ans.(B) Carbon dioxide

Q8.The Ramsar Convention is associated with the conservation of

(A) Wet lands

(B) Drylands

(D) Biofuels

Ans.(A) Wet lands

Q9.The greatest diversity of animal and plant species occurs in

(A) Equatorial forests

(B) Deserts and Savanna

(D) Tropical moist forests

Ans.(A) Equatorial forests

Q10.In a food chain, the solar energy utilized by plants is only

(A) 1.0%

(B) 10%

(D) 0.1%

Ans.(A) 1.0%

Q11.The transitional zone between two distinct communities is known as

(A) Ecotone

(B) Ecotype

(D) Ecosphere

Ans.(A) Ecotone

Q12.Which one among the following is not an endangered bird in India?

(A) Forest Owlet

(B) Mallard

(D) White-bellied Heron

Ans.(B) Mallard

Q13.Chipko movement was basically against

(A) Cultural pollution

(B) Deforestation

(D) Water pollution

Ans.(B) Deforestation

Q14.Global-500 Award is given for achievement in the field of

(A) Population control

(B) Movement against terrorism

(D) Environmental protection

Ans.(D) Environmental protection

Q15.The loss of biodiversity is due to

(A) Destruction of forests

(B) Environmental pollution

(D) All of the above

Ans.(D) All of the above

Q16.In an ecosystem, a stable group is called

(A) Succession

(B) Seral

(D) Ecotone

Ans.(D) Ecotone

Q17.Which of the following is not helpful in maintaining ecological stability?

(A) Ecosystem diversity

(B) Homeostatic mechanism

(D) Ecosystem uniformity

Ans.(D) Ecosystem uniformity

Q18.Which of the following is not a water pollutant?

(A) Sulphur dioxide

(B) Zinc

(D) Nickel

Ans.(C) Coppe

Q19.Acid rain is caused due to air pollution by

(A) Nitrous oxide and sulphur dioxide

(B) Carbon dioxide

(D) Methane

Ans. (A) Nitrous oxide and sulphur dioxide

Q20.Which of the following components of the ecosystem acts as an intermediatory between biotic and abiotic components?

(A) Habitat

(B) Decomposer

(D) Producer

Ans.(D) Producer

Q21.What term denotes the organisms getting their food from others?

(A) Autotrophs

(B) Heterotrophs

(D) Producers

Ans.(B) Heterotrophs

Q22.The Ozone layer restricts

(A) Ultraviolet radiation

(B) X-rays and Gamma rays

(D) Visible light

Ans.(A) Ultraviolet radiation

Q23.Among the biotic components of the ecosystem, the producer system is

(A) Green plants

(B) Tiger

(D) Peacock

Ans.(A) Green plants

Q24.The maximum biodiversity is found in

(A) Arctic forests

(B) Tropical rainforests

(D) Coniferous forests

Ans.(B) Tropical rain forests

Q25.Which of the following is designated as the “lungs of the world”?

(A) Equatorial evergreen forests

(B) Taiga forests

(D) Mangrove forests

Ans.(A) Equatorial evergreen forests

Q26.Global warming is caused due to the emission of

(A) Hydrocarbon

(B) Carbon monoxide

(D) Nitrogen

Ans.(C) Carbon dioxide

Q27.An artificial ecosystem is represented by

(A) Aquarium

(B) Agriculture land

(D) Zoo

Ans.(A) Aquarium

Q28.Which one of the following is a part of the Geological cycle?

(A) Hydrological cycle

(B) Nitrogen cycle

(D) Carbon cycle

Ans.(A) Hydrological cycle

Q29.Which one of the following energy is most utilized in biomass?

(A) Tidal energy

(B) Geothermal energy

(D) Atomic energy

Ans.(C) Solar energy

Q30.The word ‘Ecology’ was coined in 1866 by

(A) Ernst Haeckel

(B) Charles Darwin

(D) Arthur Tansley

Ans.(A) Ernst Haeckel

Q31.Which one of the following is related to ozone formation?

(A) Photosynthesis process

(B) Photochemical process

(D) Hydrolysis process

Ans.(B) Photochemical process

Q32.Solar radiation plays the most important role in the

(A) Water cycle

(B) Nitrogen cycle

(D) Oxygen cycle

Ans.(A) Water cycle

Q33.The author of Green Development is

(A) M.J. Bradshaw

(B) M. Nicolson

(D) R.H. Whittaker

Ans.(C) W.M. Adams

Q34.Lichens are the best indicator of

(A) Noise pollution

(B) Soil pollution

(D) Air pollution

Ans.(D) Air pollution

Q35.The term ‘ecosystem’ was enunciated by

(A) A.G. Tansley

(B) E.P. Odum

(D) C.C. Park

Ans.(A) A.G. Tansley

Q36.Mangrove forests in Asia are largely concentrated in

(A) Philippines

(B) Indonesia

(D) India

Ans.(B) Indonesia

Q37. The biotic component of the environment does not include

(A) Micro-organism system

(B) Plant system

(D) Soil system

Ans.(D) Soil system

Q38.Which one of the following ecosystems is known as the ‘Land of Big Games’?

(A) Prairie

(B) Taiga

(D) Selvas

Ans.(C) Savannah

Q39.The National Environment Research Institute is located at

(A) Dehradun

(B) New Delhi

(D) Nagpur

Ans.(D) Nagpur

Q40.he uses of CFCs are –

(A)Insulators

(B)Aerosol propellants

(C)Refrigerants

(D)All of the above

Ans.(D)All of the above…

1. There are days and nights on Earth?
(A) due to daily speed
(B) Due to annual speed
(C) Due to the half-speed
(D) Due to quarterly pace

Answer. A
2. Which is the largest planet?
(A) Jupiter
(B) Earth
(C) Uranus
(D) Venus

Answer. A
3. Which is the smallest planet?
(A) Mars
(B) Saturn
(C) Mercury
(D) Neptoon

Answer. C
4. Agulhas stream is formed in which ocean?
(A) Pacific Ocean
(B) In the Indian Ocean
(C) Arctic Ocean
(D) Others

Answer. B
5. The core of the earth’s inner core is made up of
(A) Copper and Zinc
(B) Nickel and copper
(C) Iron and zinc
(D) Iron and Nickel

Answer. D
6. India ranks second in manganese production, which is the first country?
(A) France
(B) Russian Federation
(C) Canada
(D) United States

Answer. B
7. Which of the following countries is the largest producer of coal?
(A) Brazil
(B) India
(C) America
(D) China

Answer. C
8. Who among them is called Manchester of Japan?
(A) Osaka
(B) Tokyo
(C) Nagasaki
(D) Yokohama

Answer. A
9. During the independence struggle of India, who founded the institution called ‘Deccan Educational Society’?
(A) Jawaharlal Nehru
(B) Rabindra Nath Tagore
(C) Bal Gangadhar Tilak
(D) Vyomesh Chandra Banerjee

Answer. C
10. Who was the Governor General of India at the time of the mutiny of 1857?
(A) Lord Canning
(B) Neil Armstrong
(C) John Mathai
(D) Others

Answer. A

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Environment PDF Related Questions And Answer

1. There are days and nights on Earth?
(A) due to daily speed
(B) Due to annual speed
(C) Due to the half-speed
(D) Due to quarterly pace

Answer- A
2. Which is the largest planet?
(A) Jupiter
(B) Earth
(C) Uranus
(D) Venus

Answer- A
3. Which is the smallest planet?
(A) Mars
(B) Saturn
(C) Mercury
(D) Neptoon

Answer- C
4. Agulhas stream is formed in which ocean?
(A) Pacific Ocean
(B) In the Indian Ocean
(C) Arctic Ocean
(D) Others

Answer- B
5. The core of the earth’s inner core is made up of
(A) Copper and Zinc
(B) Nickel and copper
(C) Iron and zinc
(D) Iron and Nickel

Answer- D
6. India ranks second in manganese production, which is the first country?
(A) France
(B) Russian Federation
(C) Canada
(D) United States

Answer- B
7. Which of the following countries is the largest producer of coal?
(A) Brazil
(B) India
(C) America
(D) China

Answer- C
8. Who among them is called Manchester of Japan?
(A) Osaka
(B) Tokyo
(C) Nagasaki
(D) Yokohama

Answer- A
9. During the independence struggle of India, who founded the institution called ‘Deccan Educational Society’?
(A) Jawaharlal Nehru
(B) Rabindra Nath Tagore
(C) Bal Gangadhar Tilak
(D) Vyomesh Chandra Banerjee

Answer- C
10. Who was the Governor General of India at the time of the mutiny of 1857?
(A) Lord Canning
(B) Neil Armstrong
(C) John Mathai
(D) Others

Answer- A

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Environment notes pdf in English for IAS/IFS