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

a.TRUE

b.Some of the statement is true but not completely

c.FALSE

d.Some of the Statement is false but not completely

2. Rio Summit is associated with

a.Wet Lands

b.Ozone depletion

c.Green House Gases

d.Convention on Biological Diversity

3. What was the green revolution based on ?

a.Planting of trees

b.Crop Production

c.Introduction of new plant varietiees

d.Planting more trees

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

a.Carbon Monoxide

b.Carbon Dioxide

c.Nitrogen Dioxide

d.Nitrogen

5. 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

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

a.The opinions of international legal experts

b.Verdicts of the International Criminal court (ICC)

c.International Treaties

d.Custom

7. 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

8. Which fertiliser produce acidity in soil

a.Sodium nitrate

b.Calcium notrate

c.Calcium ammonium nitrate

d.Ammonium sulphate

9. Anthropogenic is a _______-

a.Natural Environment

b.None to fhe above

c.Modified Environment

d.Both a and b

10. Soil colloidal particle shows the phenomena

a.All of the above

b.Adhesion and Cohension

c.Flocculation

d.Plasticity

11. The scope of land reforms does not include-

a.Land reforms can encompass law

b.Intermediaries removal

c.Tenancy reforms

d.All above

12. Altruism can be defined as

a.Ensuring that all individuals have equal access to resources

b.Working together for a common goal

c.Buying patronising Band Aid records at Christmas

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

13. 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

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

a.Versatility

b.Evolution

c.Natural Selection

d.Survival of the fittest

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

a.Herbicide and Insecticide

b.Sewage and Garbage

c.Industrial Tributaties

d.Automobile Laxity

16. 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.All of the above

c.Diminshing returns to natural resources

d.Rapid labour fore growth

17. EL-Nino is

a.Another name of Typhoon

b.Sea Storm

c.Warm Ocean Current

d.Trophical Disturbance

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

a.Water Hyacinth

b.Elephant Grass

c.Parthenium

d.Both b and c

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

a.All of the above

b.Countries will have same relative endowments of production factors

c.There will be no distortions or externalities

d.Consumers across countries will have identical and homogenous tastes

20. 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.Local plants

c.Ecological system

d.Climate

21. VOC stands for _______________

a.Varying organic components

b.Volatile organic components

c.Viable organic components

d.Virtual organic carriage

22. What are the four factor endowments?

a.International differences in climate

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

c.Material inputs used up in the process of production

d.Types of technology

23. Land reforms policies in India have met with

a.Tremendous success

b.Complete failure

c.Limited success

d.None of the above

24. 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.Contour barriers

c.Rock dam

d.Terrace Farming

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

a.Lithosphere

b.Total Wild life

c.Biosphere

d.Hydrosphere

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

a.Deforestation

b.The quality of fresh water

c.Ozone depletion

d.All of the above

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

a.They have a lower level of sexual activity

b.They live in large communities

c.The females exclusively mate one gorilla

d.They have a different diet

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

a.Loss of fertile delta region as for agriculture

b.Decreased rate of photosynthesis in vegetation

c.Shrinking of the polar ice regions

d.Increase frequency of hurricanes

29. Disadvantages 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.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.

c.It increases the production of the crops

d.It decreases the production of the crops

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

a.Less than 300 ppm

b.Less than 100 ppm

c.Less than 700 ppm

d.Less than 500 ppm

31. 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.Intercropping

c.Rock dam

d.Terrace Farming

32. Carbonates in water produce

a.Temporary hardness

b.Permanent hardness

c.Both a and b

d.Acidity

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

a.45 ppm

b.30 ppm

c.10 ppm

d.15 ppm

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

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

b. To remove parasites from other individuals

c.To reinforce social bonds

d.To stimulate sexual activity

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

a.Refraction

b.Radiation

c.Insolation

d.Reflection

36. 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.32

c.64

d.16

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

a.Brazil

b.India

c.China

d.USA

38. 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 monoxide

b.Carbon Dioxide

c.Nitrous dioxide

d.Sulphur dioxide

39. When was the World Wildlife Fund founded?

a.1992

b.1969

c.1961

d.1965

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

a.All of the above

b.Product design and quality

c.Product price

d.The introduction of new products

41. Sustainable development means maximising

a.The productivity of produced assets

b.Income inequality

c.Economic growth

d.None of the above

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

a.reduced inequality

b.Technological improvement

c.Increase land erosion

d.Increase resources

43. Advantages of green revolution

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

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

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.

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

a.Electrolytic zone

b.Schutzdecke zone

c.Heterotrophic zone

d.Autotrophic zone

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

a.First Plan

b.Second Plan

c.Third Plan

d.Fourth Plan

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

a.1,2 and 4

b.1 and 4

c.1 and 3

d.2, 3 and 4

47. Which has the maximum rate of deforestation?

a.Desert Zone

b.Northern Forest

c.Temperate Zone

d.Tropical Zone

48. What is the benefit of rain water storage?

a.Recharging ground water level

b.Protection from soil erosion

c.Respite from floods

d.Reduce the scarcity of water

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

a.Marine Ecosystem

b.Grassland Ecosystem

c.Desert Ecosystem

d.Mountain Ecosystem

50. The largest ecosystem of earth is

a.Biosphere

b.Hydrospere

c.Biome

d.Lithosphere

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

a.Natural gas

b.Hydro Electric power

c.Thermal Power

d.Atomic Power

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

a.Has flexible exchange rates

b.Allows private ownership of capital

c.Has fixed exchange rates

d.Conducts trade with other countries

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

a.Montreal

b.London

c.Toronto

d.Italy

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

a.Tomato

b.Corn

c.Onion

d.Potato

55. Transportation cost of trade affects:

a.All of the above

b.Global supply chains

c.Boundries bwteen tradable and non-tradable goods

d.Pattern of trade

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

d.A disputed National Election

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

a.Freon

b.Carbon Monoxide

c.Chlorofluorocarbon

d.Carbon Dioxide

58. 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

59. Quantity of soil to be taken for texture analysis

a.40g

b.30g

c.10g

d.20g

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

a.Liberalism

b.Critical Theory

c.Marxism

d.Realism

61. The environmental lapse rate is found to be:

a. 6.5°C/km

b. 8.6°C/km

c. 5.6°C/km

d.– 6.5°C/km

62. The Earth summit was organised by

a.WHO

b.UNICEF

c.UNCED

d.UNESCO

63. The air pollutants are mainly classified as____________

a.Primary and secondary pollutants

b.Natural or anthripogennic pollutants

c.None of the above

d.Point source and non-point source

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

a.HCI

b.Flue gases

c.None of the above

d.Stack Gases

65. Cast iron pipes are generally preferred to, because

a.Of ease to join

b.Of longer life

c.All of the above

d.Of moderate cost

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

a.Wind

b.Availability of water

c.Conditions of sunlights

d.Temperature variation

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

a.More rain

b.Absorption of carbon dioxide

c.Conservation of wild

d.Ecological balance

68. The cause of reduction of forest coverage is

a.Agriculture

b.Tourism and Pilgrimage

c.Rising Population

d.Manufacturing Industry

69. Environment includes

a.Abiotic and iotic component

b.Biotic component

c.Abiotic Component

d.Oxygen and Nitrogen

70. 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

71. 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

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

a.Carbon sequestration

b.Lack of clean water

c.Winter kill

d.Biodiversity

73. The phenomenon slickenside found in which soil

a.Vertisol

b.Gelisol

c.Spodosa

d.Inceptisol

74. In which year was the Green Revolution started ?

a.1965

b.1980

c.1977

d.1978

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

a.Water Vapour

b.Oxygen

c.Carbon monoxide

d.Chlorofluorocarbon

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

a.Less than 1

b.Between 15% and 2%

c.Between 1% and 15%

d.More than 2 %

77. Which of the following is an air pollutant?

a.Oxygen

b.Carbon Dioxide

c.Carbon Monoxide

d.Nitrogen

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

a.Soil Pollution

b.Thermal Pollution

c.Water Pollution

d.Noise pollution

79. During Inversion:

a.Temerature decreases with altitudfe

b.None of the above

c.Temperature remians constant

d.Temperature increases with altitude

80. Long path optical measurement uses _____________

a.IR Radiation

b.None of the above

c.Both a and b

d.Ultraviolet radiation

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

a.50 million

b.2.5 Million

c.250,000

d.50,000

82. The yield rates of crops between 1950 and 1998

a.Dramatically increased

b.None of the above

c.Dramitically declined

d.Slighlty declined

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

a.Polar Region

b.Rier

c.Tropical Region

d.Desert

84. The concept of survival of the fittest refers to

a.The individuals who work out the most

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

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

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

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

a.Lack of political will

b.poor implementation

c.Shortcoming in legislation

d.All of these

86. 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

87. What is 'HYV'

a.High yielding variety

b.High yielding crops

c.Higer yeild variety

d.Decreased yielding variety

88. The Ozone hole over Antarctica was discovered in

a.1987

b.1985

c.1978

d.1975

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

a.1st October

b.5th June

c.1st December

d.1st May

90. The demographic transition is

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

b.None of the above is correct

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

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

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

a.Dissolution

b.None of the above

c.Oxidation

d.Hydrolysis

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

a.Geneva

b.Osaka

c.Montreal

d.Florida

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

a. Industries that sell to domestic and foreign buyers

b.Import-competing industries

c.Industries in which there are neither imports nor exports

d.Industries that sell to only foreign buyers

94. 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

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

a.Beef

b.Meat of Goat

c.Sugar

d.Pork

96. What sort of data describes numerical data?

a.Qualitative

b.Idiographic

c.Nomothetic

d.Quantitive

97. 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)

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

a.Sulphur tetra oxide

b.Sulphur dioxide

c.Sulphur tera Oxide

d.Ozone

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

a.Mixed

b.Equatorial

c.Tidal Flat

d.Monsoon

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

a.All of the mentioned

b.Industrial CO₂ emissions

c.Natural CO₂ emissions

d.Human made CO₂ emissions

101. What sort of data describes meaning and experience?

a.Quantitive

b.Idiographic

c.Nomothetic

d.Qualitative

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

Environment Science MCQ Question Answers for CUET 2025

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