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. The environmental lapse rate is found to be:

a.– 6.5°C/km

b. 5.6°C/km

c. 8.6°C/km

d. 6.5°C/km

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

a.All of the above

b.Deforestation

c.The quality of fresh water

d.Ozone depletion

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

a.Freon

b.Carbon Dioxide

c.Chlorofluorocarbon

d.Carbon Monoxide

4. 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.Contour barriers

b.Rock dam

c.Mulching

d.Terrace Farming

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

a.Italy

b.Toronto

c.London

d.Montreal

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

a.The theory of mercantilism

b.The Heckscher-Ohlin theory

c.The theory of absolute advantage

d.The theory of comparative advantage

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

a.Lack of clean water

b.Biodiversity

c.Winter kill

d.Carbon sequestration

8. 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.Less than 1

d.Between 1% and 15%

9. Soil colloidal particle shows the phenomena

a.Plasticity

b.Flocculation

c.All of the above

d.Adhesion and Cohension

10. Environment includes

a.Abiotic and iotic component

b.Abiotic Component

c.Oxygen and Nitrogen

d.Biotic component

11. Quantity of soil to be taken for texture analysis

a.20g

b.30g

c.40g

d.10g

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

a.Conducts trade with other countries

b.Allows private ownership of capital

c.Has fixed exchange rates

d.Has flexible exchange rates

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

a.Dissolution

b.Hydrolysis

c.Oxidation

d.None of the above

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

a.Sugar

b.Beef

c.Meat of Goat

d.Pork

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

a.A country claming to own the moon

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

c.A disputed National Election

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

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

a.Lithosphere

b.Total Wild life

c.Biosphere

d.Hydrosphere

17. Sustainable development means maximising

a.None of the above

b.Income inequality

c.The productivity of produced assets

d.Economic growth

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

a.Sulphur tera Oxide

b.Sulphur dioxide

c.Sulphur tetra oxide

d.Ozone

19. Cast iron pipes are generally preferred to, because

a.Of longer life

b.Of moderate cost

c.All of the above

d.Of ease to join

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

a.More rain

b.Ecological balance

c.Conservation of wild

d.Absorption of carbon dioxide

21. The Ozone hole over Antarctica was discovered in

a.1985

b.1987

c.1978

d.1975

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

a.50,000

b.250,000

c.2.5 Million

d.50 million

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

a.Custom

b.Verdicts of the International Criminal court (ICC)

c.The opinions of international legal experts

d.International Treaties

24. 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

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

a.Tomato

b.Potato

c.Corn

d.Onion

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

a.Elephant Grass

b.Water Hyacinth

c.Parthenium

d.Both b and c

27. 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

28. EL-Nino is

a.Trophical Disturbance

b.Warm Ocean Current

c.Sea Storm

d.Another name of Typhoon

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

a.TRUE

b.FALSE

c.Some of the statement is true but not completely

d.Some of the Statement is false but not completely

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

a.2, 3 and 4

b.1 and 3

c.1,2 and 4

d.1 and 4

31. In which year was the Green Revolution started ?

a.1965

b.1978

c.1977

d.1980

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

a.Shortcoming in legislation

b.All of these

c.Lack of political will

d.poor implementation

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

a.Mixed

b.Monsoon

c.Equatorial

d.Tidal Flat

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

a.Less than 700 ppm

b.Less than 500 ppm

c.Less than 300 ppm

d.Less than 100 ppm

35. Which has the maximum rate of deforestation?

a.Northern Forest

b.Tropical Zone

c.Desert Zone

d.Temperate Zone

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

a.Unimited access to resource

b.Harmony

c.Homogeneity

d.Variation

37. 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.Mulching

b.Terrace Farming

c.Rock dam

d.Intercropping

38. Land reforms policies in India have met with

a.None of the above

b.Tremendous success

c.Complete failure

d.Limited success

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

a.International Court of Justice (ICJ)

b.Permanent court of International Justice (PCIJ)

c.Eurpoean Court of Justice (ECJ)

d.International Criminal Court (ICC)

40. What sort of data describes meaning and experience?

a.Qualitative

b.Nomothetic

c.Idiographic

d.Quantitive

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

a.Chlorofluorocarbon

b.Oxygen

c.Carbon monoxide

d.Water Vapour

42. Which of the following is an air pollutant?

a.Oxygen

b.Nitrogen

c.Carbon Monoxide

d.Carbon Dioxide

43. What is 'HYV'

a.High yielding crops

b.Higer yeild variety

c.High yielding variety

d.Decreased yielding variety

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

a.Conditions of sunlights

b.Availability of water

c.Temperature variation

d.Wind

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

a.reduced inequality

b.Increase land erosion

c.Increase resources

d.Technological improvement

46. Carbonates in water produce

a.Both a and b

b.Permanent hardness

c.Temporary hardness

d.Acidity

47. VOC stands for _______________

a.Viable organic components

b.Virtual organic carriage

c.Varying organic components

d.Volatile organic components

48. Long path optical measurement uses _____________

a.IR Radiation

b.Ultraviolet radiation

c.Both a and b

d.None of the above

49. What was the green revolution based on ?

a.Planting more trees

b.Planting of trees

c.Crop Production

d.Introduction of new plant varietiees

50. When was the World Wildlife Fund founded?

a.1961

b.1965

c.1992

d.1969

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

a.Mountain Ecosystem

b.Marine Ecosystem

c.Desert Ecosystem

d.Grassland Ecosystem

52. The scope of land reforms does not include-

a.All above

b.Land reforms can encompass law

c.Tenancy reforms

d.Intermediaries removal

53. What is the benefit of rain water storage?

a.Reduce the scarcity of water

b.Recharging ground water level

c.Protection from soil erosion

d.Respite from floods

54. 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

55. 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.1,4, 2, 3

c.4, 1, 2, 3

d.4, 1, 3, 2

56. Rio Summit is associated with

a.Green House Gases

b.Wet Lands

c.Convention on Biological Diversity

d.Ozone depletion

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

a.1st May

b.5th June

c.1st October

d.1st December

58. 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.Types of technology

d.International differences in climate

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

a.Natural CO₂ emissions

b.Industrial CO₂ emissions

c.Human made CO₂ emissions

d.All of the mentioned

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

a.Critical Theory

b.Marxism

c.Realism

d.Liberalism

61. The Earth summit was organised by

a.UNCED

b.UNESCO

c.UNICEF

d.WHO

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

a.Rier

b.Desert

c.Tropical Region

d.Polar Region

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

a.Atomic Power

b.Natural gas

c.Thermal Power

d.Hydro Electric power

64. How is comparative advantage defined?

a.To produce and consume all goods without trade

b.How the world actually works

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

d.Globalisation, growing economic linkages among countries

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

a.The introduction of new products

b.All of the above

c.Product design and quality

d.Product price

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

a.All of the above

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

c.Diminshing returns to natural resources

d.Rapid labour fore growth

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

a.Sulphur dioxide

b.Carbon Dioxide

c.Carbon monoxide

d.Nitrous dioxide

68. Which fertiliser produce acidity in soil

a.Ammonium sulphate

b.Calcium notrate

c.Sodium nitrate

d.Calcium ammonium nitrate

69. The air pollutants are mainly classified as____________

a.Primary and secondary pollutants

b.None of the above

c.Point source and non-point source

d.Natural or anthripogennic pollutants

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

a.Stack Gases

b.None of the above

c.Flue gases

d.HCI

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

a.Countries will have same relative endowments of production factors

b.Consumers across countries will have identical and homogenous tastes

c.All of the above

d.There will be no distortions or externalities

72. 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

73. 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.Rock dam

c.Mulching

d.Shelter belts

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

a.Soil Pollution

b.Noise pollution

c.Thermal Pollution

d.Water Pollution

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

c. It increases the production of the crops

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

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

a.Anthropocentrism

b.Ethnocentrism

c.Narcissim

d.Egocentrism

77. 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.USA

c.Brazil

d.China

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

a.Import-competing industries

b.Industries in which there are neither imports nor exports

c. Industries that sell to domestic and foreign buyers

d.Industries that sell to only foreign buyers

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

a.45 ppm

b.10 ppm

c.15 ppm

d.30 ppm

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

a.First Plan

b.Fourth Plan

c.Third Plan

d.Second Plan

81. The cause of reduction of forest coverage is

a.Agriculture

b.Manufacturing Industry

c.Rising Population

d.Tourism and Pilgrimage

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

a.Montreal

b.Florida

c.Osaka

d.Geneva

83. Anthropogenic is a _______-

a.None to fhe above

b.Modified Environment

c.Natural Environment

d.Both a and b

84. The yield rates of crops between 1950 and 1998

a.Slighlty declined

b.Dramatically increased

c.None of the above

d.Dramitically declined

85. The demographic transition is

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

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

c.None of the above is correct

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

86. 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 ensure the good health of all members of the group

d. To remove parasites from other individuals

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

a.They have a different diet

b.The females exclusively mate one gorilla

c.They live in large communities

d.They have a lower level of sexual activity

88. The phenomenon slickenside found in which soil

a.Spodosa

b.Vertisol

c.Gelisol

d.Inceptisol

89. 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.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.It decreases the production of the crops

d.It increases the production of the crops

90. During Inversion:

a.Temperature remians constant

b.None of the above

c.Temerature decreases with altitudfe

d.Temperature increases with altitude

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

a.Herbicide and Insecticide

b.Automobile Laxity

c.Industrial Tributaties

d.Sewage and Garbage

92. What sort of data describes numerical data?

a.Nomothetic

b.Quantitive

c.Idiographic

d.Qualitative

93. Transportation cost of trade affects:

a.Global supply chains

b.Pattern of trade

c.All of the above

d.Boundries bwteen tradable and non-tradable goods

94. Global warming is expected to result in

a.Change in crop pattern

b.Change in coastal line

c.All of these

d.Increase in sea level

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

a.Refraction

b.Insolation

c.Radiation

d.Reflection

96. The largest ecosystem of earth is

a.Hydrospere

b.Biosphere

c.Lithosphere

d.Biome

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

a.Electrolytic zone

b.Schutzdecke zone

c.Heterotrophic zone

d.Autotrophic zone

98. 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.64

c.8

d.16

99. Altruism can be defined as

a.Ensuring that all individuals have equal access to resources

b.Buying patronising Band Aid records at Christmas

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

d.Working together for a common goal

100. Nitrogen oxide affects human health by__________

a.Causing irritation to the eyes and skin

b.Decreasing blood's ability to transport oxygen

c.Aggravating asthma Problem

d.None of the above

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

a.Nitrogen

b.Carbon Dioxide

c.Nitrogen Dioxide

d.Carbon Monoxide

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

Environment Science MCQ Question Answers for CUET 2025

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