Here are 100 EVS (Environmental Studies) Quiz Questions with Answers suitable for all competitive exams such as TET, CTET, State PSC, UPSC (basic level), Defence, and School Exams.
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✅ 100 EVS Quiz Questions With Answers
Environment, Ecology, Pollution, Conservation, Biodiversity, Daily Life Science
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1–20: Environment & Ecology
1. What is the main source of energy for Earth?
Answer: Sun
2. Which gas is most abundant in the Earth's atmosphere?
Answer: Nitrogen
3. The process of plants making food using sunlight is called?
Answer: Photosynthesis
4. What is the natural home of an organism called?
Answer: Habitat
5. Which of the following is a renewable resource?
Answer: Solar energy
6. Ozone layer is found in which layer of the atmosphere?
Answer: Stratosphere
7. Which animal is known as the ‘Ship of the Desert’?
Answer: Camel
8. The study of environment is called?
Answer: Ecology
9. Which is the largest ecosystem?
Answer: Biosphere
10. The term ‘flora’ refers to?
Answer: Plants of a region
11. The term ‘fauna’ refers to?
Answer: Animals of a region
12. Which gas do plants absorb during photosynthesis?
Answer: Carbon dioxide
13. What is the main cause of global warming?
Answer: Increase in greenhouse gases
14. Which is the world’s largest forest?
Answer: Amazon Rainforest
15. Deforestation leads to loss of?
Answer: Biodiversity
16. Which energy is obtained from flowing water?
Answer: Hydroelectric energy
17. Chipko Movement is related to?
Answer: Forest conservation
18. Silent Valley is located in which state?
Answer: Kerala
19. Which pollutant causes acid rain?
Answer: Sulphur dioxide (SO₂)
20. What is the main component of biogas?
Answer: Methane
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21–40: Pollution & Conservation
21. Which is a biodegradable waste?
Answer: Vegetable peels
22. Which disease is caused by contaminated water?
Answer: Cholera
23. Which pollution affects the Taj Mahal?
Answer: Air pollution
24. Sound pollution is measured in?
Answer: Decibel (dB)
25. Which device controls air pollution in factories?
Answer: Electrostatic precipitator
26. Red Data Book contains information about?
Answer: Endangered species
27. The main cause of water pollution is?
Answer: Industrial waste
28. What type of waste is plastic?
Answer: Non-biodegradable
29. Which organism indicates clean water?
Answer: Fish
30. Which fuel is considered clean fuel?
Answer: CNG
31. Planting more trees is known as?
Answer: Afforestation
32. Montreal Protocol is related to?
Answer: Ozone layer protection
33. Which is a greenhouse gas?
Answer: Carbon dioxide
34. Noise beyond which level is harmful?
Answer: 85 dB
35. Which is used to purify drinking water?
Answer: Chlorine
36. The concept of Sustainable Development means?
Answer: Development without harming future generations
37. Earth Day is celebrated on?
Answer: 22 April
38. Recycling symbol has how many arrows?
Answer: 3
39. Which device checks air pollution in vehicles?
Answer: Catalytic converter
40. The primary cause of soil erosion is?
Answer: Deforestation
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41–60: Plants & Animals
41. Which plant gives us oxygen?
Answer: All green plants
42. Which part of the plant absorbs water?
Answer: Roots
43. An insect that spreads malaria?
Answer: Female Anopheles mosquito
44. Elephant is a — ?
Answer: Herbivore
45. Tiger is a — ?
Answer: Carnivore
46. Animals that eat both plants and animals?
Answer: Omnivores
47. The largest mammal?
Answer: Blue whale
48. Animals that sleep in winter?
Answer: Hibernate
49. The hardest natural substance?
Answer: Diamond
50. Photosynthesis takes place in which cell organelle?
Answer: Chloroplast
51. Which plant traps insects?
Answer: Pitcher plant
52. Which gas is released by plants at night?
Answer: Carbon dioxide
53. Which vitamin is obtained from sunlight?
Answer: Vitamin D
54. Cactus grows in — ?
Answer: Desert
55. Which tree is worshipped for giving oxygen?
Answer: Peepal tree
56. The process of shedding leaves?
Answer: Abscission
57. Animals that lay eggs?
Answer: Oviparous
58. Animals that give birth to young ones?
Answer: Viviparous
59. Which is India’s National Aquatic Animal?
Answer: Ganges River Dolphin
60. India’s National Bird?
Answer: Peacock
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61–80: Natural Resources & Geography
61. The largest source of freshwater?
Answer: Glaciers
62. The longest river in the world?
Answer: Nile
63. The river Ganga originates from?
Answer: Gangotri Glacier
64. The layer of Earth where life exists?
Answer: Biosphere
65. Which rock is formed from lava?
Answer: Igneous rock
66. The process of water turning into vapor?
Answer: Evaporation
67. The hardest layer of Earth?
Answer: Crust
68. Which soil is best for cotton?
Answer: Black soil
69. Which soil is found in deserts?
Answer: Sandy soil
70. Which mountain range is the longest in the world?
Answer: Andes
71. The world’s largest ocean?
Answer: Pacific Ocean
72. Minerals are found in?
Answer: Rocks
73. Which metal is extracted from bauxite?
Answer: Aluminium
74. The process of rain formation?
Answer: Condensation
75. The hottest planet?
Answer: Venus
76. The coldest continent?
Answer: Antarctica
77. Which is the windiest planet?
Answer: Neptune
78. Which layer protects Earth from UV rays?
Answer: Ozone layer
79. Sun rises in the — ?
Answer: East
80. Earth completes one rotation in?
Answer: 24 hours
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81–100: General Science & EVS
81. Water freezes at?
Answer: 0°C
82. Water boils at?
Answer: 100°C
83. Human heart has how many chambers?
Answer: 4
84. The largest organ of the human body?
Answer: Skin
85. The smallest bone in the human body?
Answer: Stapes (ear)
86. Which vitamin is known as Ascorbic Acid?
Answer: Vitamin C
87. A device used to measure temperature?
Answer: Thermometer
88. Human body contains how much water?
Answer: 60–70%
89. The gas responsible for rusting?
Answer: Oxygen
90. Which part of the body controls balance?
Answer: Cerebellum
91. A group of stars forming a pattern?
Answer: Constellation
92. Nearest planet to the Sun?
Answer: Mercury
93. Which planet is known as the Blue Planet?
Answer: Earth
94. Which is the largest rainforest?
Answer: Amazon
95. Which energy comes from inside the Earth?
Answer: Geothermal energy
96. Which is used to clean polluted water naturally?
Answer: Wetlands
97. Which country emits the most CO₂?
Answer: China
98. Which insect produces honey?
Answer: Honeybee
99. Which festival is related to harvest?
Answer: Baisakhi / Pongal (Any harvest festival)
100. World Environment Day is celebrated on?
Answer: 5 June
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