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

a.Increase land erosion

b.reduced inequality

c.Technological improvement

d.Increase resources

2. The cause of reduction of forest coverage is

a.Rising Population

b.Agriculture

c.Manufacturing Industry

d.Tourism and Pilgrimage

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

a.Natural gas

b.Hydro Electric power

c.Thermal Power

d.Atomic Power

4. How is comparative advantage defined?

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

b.Globalisation, growing economic linkages among countries

c.How the world actually works

d.To produce and consume all goods without trade

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

a.1st May

b.1st October

c.1st December

d.5th June

6. The scope of land reforms does not include-

a.All above

b.Intermediaries removal

c.Land reforms can encompass law

d.Tenancy reforms

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

a.Montreal

b.London

c.Toronto

d.Italy

8. 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.32

b.16

c.64

d.8

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

a.A disputed National Election

b.A country claming to own the moon

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

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

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

a.Consumers across countries will have identical and homogenous tastes

b.Countries will have same relative endowments of production factors

c.All of the above

d.There will be no distortions or externalities

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

a.45 ppm

b.15 ppm

c.30 ppm

d.10 ppm

12. Long path optical measurement uses _____________

a.Both a and b

b.Ultraviolet radiation

c.IR Radiation

d.None of the above

13. 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.Intercropping

b.Mulching

c.Rock dam

d.Terrace Farming

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

a.Marxism

b.Critical Theory

c.Liberalism

d.Realism

15. 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.Shelter belts

b.Contour barriers

c.Rock dam

d.Mulching

16. The largest ecosystem of earth is

a.Biosphere

b.Biome

c.Hydrospere

d.Lithosphere

17. Altruism can be defined as

a.Working together for a common goal

b.Ensuring that all individuals have equal access to resources

c.Buying patronising Band Aid records at Christmas

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

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

a.Hydrolysis

b.None of the above

c.Dissolution

d.Oxidation

19. When was the World Wildlife Fund founded?

a.1992

b.1969

c.1961

d.1965

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

a.The quality of fresh water

b.All of the above

c.Ozone depletion

d.Deforestation

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

a.Polar Region

b.Tropical Region

c.Desert

d.Rier

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

a.1 and 3

b.1 and 4

c.1,2 and 4

d.2, 3 and 4

23. The phenomenon slickenside found in which soil

a.Gelisol

b.Vertisol

c.Inceptisol

d.Spodosa

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

a.Hydrosphere

b.Total Wild life

c.Biosphere

d.Lithosphere

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

a.Carbon Dioxide

b.Nitrogen Dioxide

c.Nitrogen

d.Carbon Monoxide

26. Sustainable development means maximising

a.Economic growth

b.None of the above

c.The productivity of produced assets

d.Income inequality

27. EL-Nino is

a.Warm Ocean Current

b.Another name of Typhoon

c.Sea Storm

d.Trophical Disturbance

28. VOC stands for _______________

a.Virtual organic carriage

b.Volatile organic components

c.Viable organic components

d.Varying organic components

29. The Ozone hole over Antarctica was discovered in

a.1978

b.1987

c.1985

d.1975

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

a.Third Plan

b.First Plan

c.Second Plan

d.Fourth Plan

31. 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.Decreased rate of photosynthesis in vegetation

d.Increase frequency of hurricanes

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

a.Flue gases

b.Stack Gases

c.None of the above

d.HCI

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

a.Water Pollution

b.Soil Pollution

c.Thermal Pollution

d.Noise pollution

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

a.The theory of comparative advantage

b.The Heckscher-Ohlin theory

c.The theory of absolute advantage

d.The theory of mercantilism

35. What are the four factor endowments?

a.Types of technology

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

c.Material inputs used up in the process of production

d.International differences in climate

36. The demographic transition is

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

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

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

d.None of the above is correct

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

a.Custom

b.The opinions of international legal experts

c.Verdicts of the International Criminal court (ICC)

d.International Treaties

38. 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, 2, 3

b.4, 1, 3, 2

c.4, 1, 2, 3

d.1, 4, 3, 2

39. What is 'HYV'

a.Higer yeild variety

b.Decreased yielding variety

c.High yielding crops

d.High yielding variety

40. Which has the maximum rate of deforestation?

a.Desert Zone

b.Tropical Zone

c.Northern Forest

d.Temperate Zone

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

a.Chlorofluorocarbon

b.Carbon monoxide

c.Oxygen

d.Water Vapour

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

a.Herbicide and Insecticide

b.Industrial Tributaties

c.Sewage and Garbage

d.Automobile Laxity

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

a.Between 1% and 15%

b.Between 15% and 2%

c.Less than 1

d.More than 2 %

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

a.Ecological balance

b.Conservation of wild

c.More rain

d.Absorption of carbon dioxide

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

a.Less than 100 ppm

b.Less than 300 ppm

c.Less than 700 ppm

d.Less than 500 ppm

46. Global warming is expected to result in

a.Increase in sea level

b.Change in crop pattern

c.Change in coastal line

d.All of these

47. Transportation cost of trade affects:

a.All of the above

b.Pattern of trade

c.Global supply chains

d.Boundries bwteen tradable and non-tradable goods

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

a.Human made CO₂ emissions

b.All of the mentioned

c.Industrial CO₂ emissions

d.Natural CO₂ emissions

49. The air pollutants are mainly classified as____________

a.Natural or anthripogennic pollutants

b.Primary and secondary pollutants

c.Point source and non-point source

d.None of the above

50. In which year was the Green Revolution started ?

a.1977

b.1965

c.1980

d.1978

51. The environmental lapse rate is found to be:

a. 8.6°C/km

b. 5.6°C/km

c.– 6.5°C/km

d. 6.5°C/km

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

a.Temperature variation

b.Wind

c.Availability of water

d.Conditions of sunlights

53. Which fertiliser produce acidity in soil

a.Calcium ammonium nitrate

b.Calcium notrate

c.Ammonium sulphate

d.Sodium nitrate

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

a.Some of the statement is true but not completely

b.FALSE

c.Some of the Statement is false but not completely

d.TRUE

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

a.Tidal Flat

b.Monsoon

c.Equatorial

d.Mixed

56. What is the benefit of rain water storage?

a.Respite from floods

b.Recharging ground water level

c.Reduce the scarcity of water

d.Protection from soil erosion

57. Carbonates in water produce

a.Temporary hardness

b.Acidity

c.Both a and b

d.Permanent hardness

58. The concept of survival of the fittest refers to

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

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

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

d.The individuals who work out the most

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

a.They live in large communities

b.The females exclusively mate one gorilla

c.They have a different diet

d.They have a lower level of sexual activity

60. Environment includes

a.Biotic component

b.Abiotic and iotic component

c.Oxygen and Nitrogen

d.Abiotic Component

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

a.Autotrophic zone

b.Heterotrophic zone

c.Electrolytic zone

d.Schutzdecke zone

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

a.Corn

b.Potato

c.Tomato

d.Onion

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

a.Marine Ecosystem

b.Mountain Ecosystem

c.Grassland Ecosystem

d.Desert Ecosystem

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

a.Freon

b.Chlorofluorocarbon

c.Carbon Dioxide

d.Carbon Monoxide

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

a.Egocentrism

b.Narcissim

c.Ethnocentrism

d.Anthropocentrism

66. Land reforms policies in India have met with

a.Tremendous success

b.Limited success

c.Complete failure

d.None of the above

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

a.International Court of Justice (ICJ)

b.International Criminal Court (ICC)

c.Permanent court of International Justice (PCIJ)

d.Eurpoean Court of Justice (ECJ)

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

a.Beef

b.Meat of Goat

c.Pork

d.Sugar

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

a.poor implementation

b.Shortcoming in legislation

c.Lack of political will

d.All of these

70. What sort of data describes numerical data?

a.Quantitive

b.Qualitative

c.Idiographic

d.Nomothetic

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

a.Diminshing returns to natural resources

b.All of the above

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

d.Rapid labour fore growth

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

a.Product design and quality

b.Product price

c.All of the above

d.The introduction of new products

73. What was the green revolution based on ?

a.Planting of trees

b.Planting more trees

c.Introduction of new plant varietiees

d.Crop Production

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

a.Unimited access to resource

b.Variation

c.Harmony

d.Homogeneity

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

a.Carbon Dioxide

b.Sulphur dioxide

c.Nitrous dioxide

d.Carbon monoxide

76. 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.Terrace Farming

b.Contour barriers

c.Mulching

d.Rock dam

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

a.Sulphur dioxide

b.Ozone

c.Sulphur tetra oxide

d.Sulphur tera Oxide

78. Soil colloidal particle shows the phenomena

a.All of the above

b.Plasticity

c.Flocculation

d.Adhesion and Cohension

79. Which of the following is an air pollutant?

a.Carbon Monoxide

b.Carbon Dioxide

c.Nitrogen

d.Oxygen

80. 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 remove parasites from other individuals

c.To stimulate sexual activity

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

81. During Inversion:

a.None of the above

b.Temperature increases with altitude

c.Temperature remians constant

d.Temerature decreases with altitudfe

82. 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.It increases the production of the crops

d.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.

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

a.India

b.Brazil

c.USA

d.China

84. What sort of data describes meaning and experience?

a.Idiographic

b.Quantitive

c.Qualitative

d.Nomothetic

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

a.Florida

b.Geneva

c.Osaka

d.Montreal

86. Nitrogen oxide affects human health by__________

a.Aggravating asthma Problem

b.Decreasing blood's ability to transport oxygen

c.None of the above

d.Causing irritation to the eyes and skin

87. The yield rates of crops between 1950 and 1998

a.Slighlty declined

b.None of the above

c.Dramitically declined

d.Dramatically increased

88. 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.Climate

b.Human Resource

c.Local plants

d.Ecological system

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

a.Water Hyacinth

b.Parthenium

c.Both b and c

d.Elephant Grass

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

a.Industries that sell to only foreign buyers

b.Industries in which there are neither imports nor exports

c. Industries that sell to domestic and foreign buyers

d.Import-competing industries

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

a.50 million

b.50,000

c.250,000

d.2.5 Million

92. The Earth summit was organised by

a.UNCED

b.UNESCO

c.WHO

d.UNICEF

93. Rio Summit is associated with

a.Green House Gases

b.Wet Lands

c.Convention on Biological Diversity

d.Ozone depletion

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

a.Conducts trade with other countries

b.Has flexible exchange rates

c.Has fixed exchange rates

d.Allows private ownership of capital

95. Cast iron pipes are generally preferred to, because

a.All of the above

b.Of moderate cost

c.Of longer life

d.Of ease to join

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

a.Radiation

b.Insolation

c.Refraction

d.Reflection

97. Advantages of green revolution

a.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.

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

c. It increases the production of the crops

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

98. Quantity of soil to be taken for texture analysis

a.30g

b.10g

c.40g

d.20g

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

a.Carbon sequestration

b.Biodiversity

c.Winter kill

d.Lack of clean water

100. Anthropogenic is a _______-

a.Natural Environment

b.Modified Environment

c.None to fhe above

d.Both a and b

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

a.Evolution

b.Survival of the fittest

c.Natural Selection

d.Versatility

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

Environment Science MCQ Question Answers for CUET 2025

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