CUET 2025 Environment Science MCQs for Practice

Environment Science MCQ Question Answers for CUET 2025

Environment Science MCQs– Practice the Environment Science MCQs suitable for various Entrance Exams including CUET. Learn and practice Environment Science questions and answers. Environment Science MCQ questions are very helpful for various competitive exams. CUET is a Common University Entrance Test that is now mandatory to take admission to Central Universities in India. Environment Science MCQ questions are based on the latest CUET 2025 exam pattern and other entrance exams, so that you can have a fair idea about exam trends that will be followed for various entrance exams.

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1. When was the World Wildlife Fund founded?

a.1969

b.1992

c.1965

d.1961

2. Which of the following has maximum bio-diversity?

a.Desert

b.Rier

c.Polar Region

d.Tropical Region

3. Long path optical measurement has a range of several kilometres.

a.TRUE

b.Some of the statement is true but not completely

c.Some of the Statement is false but not completely

d.FALSE

4. Many primates engage in social grooming, which is a very time-consuming activity. The main function of this is

a.To reinforce social bonds

b.To stimulate sexual activity

c. To remove parasites from other individuals

d.To ensure the good health of all members of the group

5. The scope of land reforms does not include-

a.Tenancy reforms

b.Intermediaries removal

c.Land reforms can encompass law

d.All above

6. What term describes the idea that humans consider themselves to have a superior and fundamental place in the universe?

a.Anthropocentrism

b.Narcissim

c.Egocentrism

d.Ethnocentrism

7. What was the green revolution based on ?

a.Planting more trees

b.Introduction of new plant varietiees

c.Crop Production

d.Planting of trees

8. Due to growing demand of which of the following product, tropical forest are being damaged the most

a.Pork

b.Beef

c.Meat of Goat

d.Sugar

9. If a nation has an open economy it means that the nation:

a.Has fixed exchange rates

b.Has flexible exchange rates

c.Conducts trade with other countries

d.Allows private ownership of capital

10. Rio Summit is associated with

a.Wet Lands

b.Green House Gases

c.Ozone depletion

d.Convention on Biological Diversity

11. Which of the following plants is extremely sensitive towards sulphur dioxide?

a.Potato

b.Onion

c.Tomato

d.Corn

12. The cause of reduction of forest coverage is

a.Agriculture

b.Manufacturing Industry

c.Rising Population

d.Tourism and Pilgrimage

13. According to the United Nations, the world’s major environmental problems include:

a.The quality of fresh water

b.Ozone depletion

c.All of the above

d.Deforestation

14. Land reforms policies in India have met with

a.None of the above

b.Complete failure

c.Tremendous success

d.Limited success

15. Which of the following represents the allowed rate of CO₂?

a.Less than 500 ppm

b.Less than 300 ppm

c.Less than 100 ppm

d.Less than 700 ppm

16. Which of the following is a renewable source of energy?

a.Atomic Power

b.Hydro Electric power

c.Thermal Power

d.Natural gas

17. Where is the secretariat of the Conference on Biological Diversity?

a.Montreal

b.Italy

c.London

d.Toronto

18. Which of the following is an air pollutant?

a.Oxygen

b.Carbon Monoxide

c.Nitrogen

d.Carbon Dioxide

19. Anthropogenic is a _______-

a.Both a and b

b.Natural Environment

c.Modified Environment

d.None to fhe above

20. Which of the following is an important Greenhouse Gas?

a.Chlorofluorocarbon

b.Carbon Monoxide

c.Freon

d.Carbon Dioxide

21. World Environmental day is celebrated on ________ every year.

a.1st December

b.1st October

c.5th June

d.1st May

22. Of the solar energy coming into the Biosphere, what percentage of it is actually used in photosynthesis?

a.More than 2 %

b.Between 15% and 2%

c.Between 1% and 15%

d.Less than 1

23. Soil colloidal particle shows the phenomena

a.Plasticity

b.Flocculation

c.All of the above

d.Adhesion and Cohension

24. What is the benefit of rain water storage?

a.Recharging ground water level

b.Reduce the scarcity of water

c.Protection from soil erosion

d.Respite from floods

25. The phenomenon slickenside found in which soil

a.Inceptisol

b.Spodosa

c.Vertisol

d.Gelisol

26. Long path optical measurement uses _____________

a.Both a and b

b.Ultraviolet radiation

c.None of the above

d.IR Radiation

27. Transportation cost of trade affects:

a.Boundries bwteen tradable and non-tradable goods

b.Pattern of trade

c.Global supply chains

d.All of the above

28. International Trade is most likely to generate short-term unemployment in:

a.Industries in which there are neither imports nor exports

b.Industries that sell to only foreign buyers

c. Industries that sell to domestic and foreign buyers

d.Import-competing industries

29. Carbonates in water produce

a.Temporary hardness

b.Permanent hardness

c.Acidity

d.Both a and b

30. The largest ecosystem of earth is

a.Biome

b.Lithosphere

c.Hydrospere

d.Biosphere

31. What does the phrase “anthropogenic CO₂ emissions” mean?

a.Natural CO₂ emissions

b.Human made CO₂ emissions

c.Industrial CO₂ emissions

d.All of the mentioned

32. The method of soil conservation in the coastal and dry regions where rows of trees are planted to check the wind movement to protect soil cover is called

a.Contour barriers

b.Mulching

c.Rock dam

d.Shelter belts

33. What is the cause of the ‘Greenhouse effect’?

a.Carbon Monoxide

b.Nitrogen

c.Nitrogen Dioxide

d.Carbon Dioxide

34. What sort of data describes meaning and experience?

a.Nomothetic

b.Idiographic

c.Qualitative

d.Quantitive

35. The radiant energy received by the Earth from the sun is

a.Insolation

b.Reflection

c.Radiation

d.Refraction

36. How is comparative advantage defined?

a.How the world actually works

b.Globalisation, growing economic linkages among countries

c.You produce the things you are especially good at, and buy from others, the goods you are less efficient in producing.

d.To produce and consume all goods without trade

37. The World’s largest biofuel plant has been established with a production capacity of 100 million litres per year, is located in

a.USA

b.China

c.Brazil

d.India

38. Soil is eroded heavily due to deforestation, it affects the flowing of surface water badly. Which of the following is badly affected by these causes

a.Human Resource

b.Ecological system

c.Local plants

d.Climate

39. What are the four factor endowments?

a.National resources, labour, physical capital and human capital

b.Material inputs used up in the process of production

c.International differences in climate

d.Types of technology

40. The basic purpose of introducing land reforms has been adversely affected due to

a.All of these

b.poor implementation

c.Lack of political will

d.Shortcoming in legislation

41. The evolution of hominids is generally believed to have begun around how many years ago?

a.50 million

b.250,000

c.2.5 Million

d.50,000

42. In which year was the Green Revolution started ?

a.1980

b.1978

c.1965

d.1977

43. Which of the following is not poisonous to humans?

a.HCI

b.Stack Gases

c.Flue gases

d.None of the above

44. Which of the following gas affects human health by reducing the blood’s ability to carry oxygen to different parts of the body?

a.Nitrous dioxide

b.Carbon Dioxide

c.Sulphur dioxide

d.Carbon monoxide

45. Male gorillas have relatively small testicles compared to those of a chimpanzee because

a.They have a different diet

b.They have a lower level of sexual activity

c.They live in large communities

d.The females exclusively mate one gorilla

46. How many of your first cousins (your uncle and aunt's children) would need to survive to maintain the genetic presence in the world as you?

a.8

b.16

c.32

d.64

47. Advantages of green revolution

a. It increases the production of the crops

b.In order to protect crops from different types of disease caused by pest as well as the damages caused by insects, the farmers started using pesticides and insecticides at a high amount.

c.The usage of a high quantity of pesticides and insecticides affects the plants

d.It explains the modern farming method ,example, irrigation method,

48. VOC stands for _______________

a.Viable organic components

b.Volatile organic components

c.Varying organic components

d.Virtual organic carriage

49. The ‘natural law’ perspective on international law is most associated with which IR theory

a.Critical Theory

b.Marxism

c.Realism

d.Liberalism

50. Which of the following types of pollution is Cultural eutrophication?

a.Soil Pollution

b.Thermal Pollution

c.Water Pollution

d.Noise pollution

51. Global warming is expected to result in

a.Increase in sea level

b.All of these

c.Change in coastal line

d.Change in crop pattern

52. Quantity of soil to be taken for texture analysis

a.30g

b.40g

c.10g

d.20g

53. Disadvantages of green revolution

a.As the water and soil from the farming land are ruined either due to rain or flood, all the toxic content of pesticides and other chemicals present in the soil gets mixed with the nearby water source which leads to the death of aquatic organisms, mostly fish.

b.It decreases the production of the crops

c.In order to protect crops from different types of disease caused by pest as well as the damages caused by insects, the farmers started using pesticides and insecticides at a high amount.

d.It increases the production of the crops

54. Sustainable development means maximising

a.None of the above

b.Economic growth

c.The productivity of produced assets

d.Income inequality

55. What sort of data describes numerical data?

a.Quantitive

b.Qualitative

c.Idiographic

d.Nomothetic

56. Which of the following environments supports the growth of Mangrove Swamp?

a.Mixed

b.Tidal Flat

c.Monsoon

d.Equatorial

57. Which of the following is a major health consequence of environmental degradation, especially in developing countries?

a.Biodiversity

b.Lack of clean water

c.Carbon sequestration

d.Winter kill

58. The air pollutants are mainly classified as____________

a.Point source and non-point source

b.Primary and secondary pollutants

c.None of the above

d.Natural or anthripogennic pollutants

59. What is the biggest source of pollution in the world?

a.Sewage and Garbage

b.Industrial Tributaties

c.Automobile Laxity

d.Herbicide and Insecticide

60. The nitrate concentration in domestic water supplies, is generally limited to

a.30 ppm

b.15 ppm

c.10 ppm

d.45 ppm

61. What was the first economic theory of international trade to be developed?

a.The theory of absolute advantage

b.The theory of comparative advantage

c.The Heckscher-Ohlin theory

d.The theory of mercantilism

62. The concept of survival of the fittest refers to

a. The individuals who are the strongest and most likely to survive

b.The individuals who work out the most

c.The individuals who have characteristics that fit in best to the environment

d.The individuals who have characteristics that make them more attractive and hence more likely to get a mate

63. Environment includes

a.Biotic component

b.Abiotic and iotic component

c.Oxygen and Nitrogen

d.Abiotic Component

64. Among the following, the only secondary pollutant is:

a.Sulphur tetra oxide

b.Sulphur dioxide

c.Ozone

d.Sulphur tera Oxide

65. International trade forces domestic firms to become more competitive in terms of

a.Product price

b.The introduction of new products

c.Product design and quality

d.All of the above

66. The first authoritative exposition of the national policy on tenancy reform is found in the document of the

a.Second Plan

b.Third Plan

c.First Plan

d.Fourth Plan

67. The method of soil conservation in which different crops are grown in alternate rows and are sown at different times to protect the soil from rain wash is called?

a.Terrace Farming

b.Mulching

c.Intercropping

d.Rock dam

68. What are some of the costs of a high fertility rate and rapid population growth?

a.increase in the ration of depenedent to working age population

b.Rapid labour fore growth

c.Diminshing returns to natural resources

d.All of the above

69. Which of the following reduces the planet’s carrying capacity?

a.reduced inequality

b.Increase land erosion

c.Technological improvement

d.Increase resources

70. Which of these is the chief court of the UN?

a.International Court of Justice (ICJ)

b.Eurpoean Court of Justice (ECJ)

c.Permanent court of International Justice (PCIJ)

d.International Criminal Court (ICC)

71. Which fertiliser produce acidity in soil

a.Calcium ammonium nitrate

b.Calcium notrate

c.Ammonium sulphate

d.Sodium nitrate

72. Which of the following is least likely to be an effect of global warming?

a.Shrinking of the polar ice regions

b.Loss of fertile delta region as for agriculture

c.Increase frequency of hurricanes

d.Decreased rate of photosynthesis in vegetation

73. Among the following climatic factors, which one has the least effect upon a terrestrial ecosystem?

a.Wind

b.Conditions of sunlights

c.Availability of water

d.Temperature variation

74. Cast iron pipes are generally preferred to, because

a.Of ease to join

b.Of longer life

c.Of moderate cost

d.All of the above

75. The yield rates of crops between 1950 and 1998

a.None of the above

b.Dramatically increased

c.Dramitically declined

d.Slighlty declined

76. What is the ecological system integrating all living beings and their relationships?

a.Total Wild life

b.Hydrosphere

c.Biosphere

d.Lithosphere

77. The demographic transition is

a.None of the above is correct

b.The period when crude birth and death rates are equal

c.The period between preindustrial and modern equality of crude birth and death rates

d.The period when both crude birth and death rates rise

78. The Ozone hole over Antarctica was discovered in

a.1987

b.1985

c.1975

d.1978

79. For which of the following reasons, it is necessary to secure a large area for forest?

a.Ecological balance

b.More rain

c.Absorption of carbon dioxide

d.Conservation of wild

80. EL-Nino is

a.Sea Storm

b.Another name of Typhoon

c.Warm Ocean Current

d.Trophical Disturbance

81. Altruism can be defined as

a.Ensuring that all individuals have equal access to resources

b.Working together for a common goal

c.An act that benefits the recipient at a cost to the donor

d.Buying patronising Band Aid records at Christmas

82. The first protocol to ban the emissions of chlorofluorocarbons in the atmosphere was made in

a.Geneva

b.Florida

c.Montreal

d.Osaka

83. Nitrogen oxide affects human health by__________

a.Aggravating asthma Problem

b.None of the above

c.Causing irritation to the eyes and skin

d.Decreasing blood's ability to transport oxygen

84. Which has the maximum rate of deforestation?

a.Desert Zone

b.Tropical Zone

c.Northern Forest

d.Temperate Zone

85. Which of these is not an official source of Public International Law?

a.Verdicts of the International Criminal court (ICC)

b.International Treaties

c.The opinions of international legal experts

d.Custom

86. What type of chemical weathering is enhanced by acid rain?

a.Oxidation

b.Hydrolysis

c.Dissolution

d.None of the above

87. In order for natural selection to occur, what must there be amongst individuals of each generation?

a.Variation

b.Unimited access to resource

c.Homogeneity

d.Harmony

88. Which is the first zone of purification in a sand bed?

a.Autotrophic zone

b.Heterotrophic zone

c.Electrolytic zone

d.Schutzdecke zone

89. Which of the following aquatic plants is effective in preventing the water-pollution caused by industrial waste?

a.Elephant Grass

b.Both b and c

c.Water Hyacinth

d.Parthenium

90. During Inversion:

a.Temerature decreases with altitudfe

b.Temperature remians constant

c.None of the above

d.Temperature increases with altitude

91. The Biosphere is a region of earth which supports life. It includes- 1.Hydrosphere, 2.Lithosphere, 3.Stratosphere, 4.Troposphere

a.1 and 4

b.2, 3 and 4

c.1 and 3

d.1,2 and 4

92. The Earth summit was organised by

a.UNICEF

b.UNESCO

c.WHO

d.UNCED

93. Ozone depletion is caused due to increase in the level of

a.Oxygen

b.Water Vapour

c.Chlorofluorocarbon

d.Carbon monoxide

94. The correct sequence in decreasing order of the albedo values of these ecosystem is::,1. Taiga,2. Tropical evergreen,3. Tropical deciduous,4. Tundra

a.1, 4, 3, 2

b.4, 1, 3, 2

c.1,4, 2, 3

d.4, 1, 2, 3

95. The environmental lapse rate is found to be:

a. 5.6°C/km

b. 6.5°C/km

c. 8.6°C/km

d.– 6.5°C/km

96. Which one of the following ecosystems covers the largest area of the earth’s surface?

a.Marine Ecosystem

b.Desert Ecosystem

c.Mountain Ecosystem

d.Grassland Ecosystem

97. A no-trade world will have which of the following characteristics

a.Consumers across countries will have identical and homogenous tastes

b.There will be no distortions or externalities

c.Countries will have same relative endowments of production factors

d.All of the above

98. The method of soil conservation in which rocks are piled up to slow down the flow of water which prevents gullies and further soil loss is called

a.Mulching

b.Rock dam

c.Contour barriers

d.Terrace Farming

99. What is 'HYV'

a.Higer yeild variety

b.High yielding crops

c.High yielding variety

d.Decreased yielding variety

100. Being able to adapt to changes in the environment is referred to as what?

a.Evolution

b.Survival of the fittest

c.Versatility

d.Natural Selection

101. Which of these political issues does not fall under Public International Law?

a.A Policeman torturing a criminal suspect in a acountry where this is not considered illegal

b.A country claming to own the moon

c.A disputed National Election

d.Mining on the seabed of an ocean outside of territorial waters

CUET 2025 Environment Science MCQ Question Answers – 100 MCQs for Practice

Environment Science MCQ Question Answers for CUET 2025

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