Table of Contents
LEVEL 1 (CLASSES 4 AND 5) QN 1 TO 50.
1. What is the term used for a person who fits and repairs pipes, fixtures, taps, and so on?
a) Mason
b) Plumber
c) Architect
d) Electrician
Answer: b) Plumber
2. How do puddles dry naturally?
a) Condensation
b) Evaporation
c) Mixing with soil
d) None of the above
Answer: b) Evaporation
3. Consuming inadequate water can cause:
a) Evaporation
b) Dehydration
c) Condensation
d) All of the above
Answer: b) Dehydration
4. _____ does not readily mix with water.
a) Milk
b) Oil
c) Cold drink
d) Vinegar
Answer: b) Oil
5. Which method of cooking depends on water?
a) Roasting
b) Grilling
c) Steaming
d) Frying
Answer: c) Steaming
6. Which organism helps convert organic waste into manure?
a) Common house fly
b) Black ants
c) Earthworms
d) White termites
Answer: c) Earthworms
7. Waste treatment method where thermal energy is extracted:
a) Recycling
b) Landfilling
c) Incineration
d) Composting
Answer: c) Incineration
8. Best way to manage solid waste:
a) Collection → segregation → recycling → treatment
b) Collection → recycling → segregation → treatment
c) Waste minimization → segregation → recycling → treatment
d) Waste minimization → collection → segregation → treatment
Answer: c) Waste minimization → segregation → recycling → treatment
9. Substance NOT to be added to vermicompost pit:
a) Coconut shells
b) Left-over pickle
c) Dry leaves
d) Pineapple waste
Answer: b) Left-over pickle
10. Substances essential for growth and life are called:
a) Nutrients
b) Carbohydrates
c) Proteins
d) Vitamins
Answer: a) Nutrients
11. Which of the following is an air pollutant?
a) Oxygen
b) Carbon dioxide
c) Ozone
d) Soot (smoke)
Answer: d) Soot (smoke)
12. Gas released from vehicles causing breathing difficulty:
a) Oxygen
b) Carbon monoxide
c) Nitrogen
d) Helium
Answer: b) Carbon monoxide
13. Best way to conserve energy:
a) Keep lights on
b) Use CFL/LED bulbs
c) Leave tap open
d) Use car for short distances
Answer: b) Use CFL/LED bulbs
14. Main source of drinking water in most Indian villages:
a) Tanker water
b) Sea water
c) Ground water
d) River water
Answer: c) Ground water
15. Water changing to vapour is called:
a) Melting
b) Precipitation
c) Evaporation
d) Collection
Answer: c) Evaporation
16. Water cycle involves:
a) Evaporation
b) Condensation
c) Precipitation
d) All of the above
Answer: d) All of the above
17. Which is biodegradable?
a) Polythene bags
b) Fruit peels
c) Aluminium foil
d) Glass
Answer: b) Fruit peels
18. Study of plants is called:
a) Zoology
b) Ecology
c) Botany
d) Geology
Answer: c) Botany
19. Main purpose of planting trees in cities:
a) Increase temperature
b) Provide shade & improve air quality
c) Use more water
d) Block sunlight
Answer: b) Provide shade & improve air quality
20. Animals that eat only plants are called:
a) Herbivores
b) Carnivores
c) Omnivores
d) Decomposers
Answer: a) Herbivores
21. Red Data Book provides info about:
a) Local festivals
b) Endangered species
c) Traffic rules
d) Traditional recipes
Answer: b) Endangered species
22. A renewable source of energy:
a) Solar energy
b) Coal
c) Petroleum
d) Diesel
Answer: a) Solar energy
23. Air is a mixture of:
a) Gases
b) Metals
c) Liquids
d) Solids
Answer: a) Gases
24. Water is also called:
a) H₂O
b) CO₂
c) O₂
d) SO₂
Answer: a) H₂O
25. Natural fertilizer:
a) Compost
b) Plastic bags
c) Battery cells
d) Iron rods
Answer: a) Compost
26. Main function of the ozone layer:
a) Absorb greenhouse gases
b) Provide oxygen
c) Protect from UV rays
d) Cool atmosphere
Answer: c) Protect from UV rays
27. Excessive groundwater use in agriculture is due to:
a) Industrialization
b) Inefficient irrigation
c) Urbanization
d) Power generation
Answer: b) Inefficient irrigation
28. Metal that is liquid at room temperature:
a) Iron
b) Gold
c) Mercury
d) Copper
Answer: c) Mercury
29. Season when water scarcity occurs:
a) Monsoon
b) Summer
c) Winter
d) None
Answer: b) Summer
30. Main cause of water pollution:
a) Washing clothes
b) Throwing plastic & chemicals
c) Boiling water
d) Using rainwater
Answer: b) Throwing plastic & chemicals
31. Practice that helps conserve water:
a) Tap kept open
b) Fixing leaking taps
c) Washing vehicles daily
d) Watering with hose
Answer: b) Fixing leaking taps
32. Energy used by solar cooker:
a) Wind
b) Solar
c) Hydro
d) Nuclear
Answer: b) Solar
33. National parks are set up to:
a) Provide employment
b) Build houses
c) Protect wildlife and biodiversity
d) Promote industries
Answer: c) Protect wildlife and biodiversity
34. PET bottles are made of:
a) Ceramic
b) Plastic
c) Aluminium
d) Paper
Answer: b) Plastic
35. NOT a natural disaster:
a) Earthquake
b) Cyclone
c) Tsunami
d) Pollution
Answer: d) Pollution
36. More environment-friendly transport:
a) Car
b) Motorbike
c) Bicycle
d) Scooter
Answer: c) Bicycle
37. House built of snow:
a) Tent
b) Igloo
c) Hut
d) Bungalow
Answer: b) Igloo
38. Which increases soil fertility?
a) Chemical fertilizers
b) Crop rotation
c) Burning stubble
d) Leaving land fallow
Answer: b) Crop rotation
39. Cutting down large numbers of trees is called:
a) Deforestation
b) Afforestation
c) Reforestation
d) Urbanization
Answer: a) Deforestation
40. Example of non-biodegradable waste:
a) Vegetable peels
b) Newspaper
c) Polythene bag
d) Egg shells
Answer: c) Polythene bag
41. Submerged part of an iceberg is:
a) Smaller than above
b) Larger than above
c) Equal to above
d) Zero
Answer: b) Larger than above
42. Major constituent of air:
a) Oxygen
b) Carbon dioxide
c) Nitrogen
d) Water vapour
Answer: c) Nitrogen
43. Component needed for growth and repair of tissues:
a) Fats
b) Vitamins
c) Proteins
d) Carbohydrates
Answer: c) Proteins
44. Process of producing young ones of same kind:
a) Pollination
b) Germination
c) Reproduction
d) Transpiration
Answer: c) Reproduction
45. The sun appears to rise in the:
a) East
b) West
c) North
d) South
Answer: a) East
46. NOT a waterborne disease:
a) Cholera
b) Malaria
c) Typhoid
d) Diarrhea
Answer: b) Malaria
47. Green pigment in leaves:
a) Chlorophyll
b) Hemoglobin
c) Melanin
d) Keratin
Answer: a) Chlorophyll
48. Animal that lives on land and in water:
a) Tiger
b) Frog
c) Cow
d) Lion
Answer: b) Frog
49. Chemical whose excessive use affects groundwater quality:
a) Fertilizer
b) Petroleum
c) Detergent
d) Soap
Answer: a) Fertilizer
50. Why should we use public transport?
a) Reduces traffic & pollution
b) It is costly
c) Consumes more fuel
d) None
Answer: a) Reduces traffic & pollution
LEVEL 2 ( CLASSES 6,7 AND 8) QNO 51 TO 100.
51. What term describes the storehouse of water between layers of hard rock?
a) Water table
b) Oasis
c) Aquifer
d) None
Answer: c) Aquifer
52. Sullage (grey water) originates from:
a) Kitchen and bathroom
b) Kitchen and toilet
c) Kitchen, bathroom, and toilet
d) None
Answer: a) Kitchen and bathroom
53. Civilization with earliest flush toilets & sanitation system:
a) Aztecs
b) Indus Valley
c) Mesopotamian
d) Roman
Answer: b) Indus Valley
54. Drinking water is called:
a) Freshwater
b) Clean water
c) Potable water
d) Neutral water
Answer: c) Potable water
55. Best disposal of crop residue:
a) Throw into water bodies
b) Dump at disposal site
c) Burn in kilns
d) Make pellets as industrial fuel
Answer: d) Make pellets as fuel
56. Property used to identify organic load in wastewater:
a) Total suspended solids
b) Chemical oxygen demand (COD)
c) Biochemical oxygen demand (BOD)
d) Total Kjeldahl nitrogen
Answer: c) BOD
57. Item that cannot be decomposed naturally:
a) Egg shells
b) Tea bags
c) Styrofoam plates
d) Waste paper
Answer: c) Styrofoam plates
58. Hazardous materials are:
a) Toxic
b) Explosive
c) Non-fatal
d) Explosive and toxic
Answer: d) Explosive and toxic
59. Practice involving selective removal of plant parts:
a) Weeding
b) Chopping
c) Trimming
d) Pruning
Answer: d) Pruning
60. Longest canal in India:
a) West Coast Canal
b) Upper Ganges Canal
c) Buckingham Canal
d) Indira Gandhi Canal
Answer: d) Indira Gandhi Canal
61. IUCN stands for:
a) International Union for Conservation of Nature
b) Integrated Union for Concreting Nations
c) International Urban Climate Network
d) International Union for Converging Nations
Answer: a) International Union for Conservation of Nature
62. Study of relationships between organisms & environment:
a) Ecology
b) Zoology
c) Anatomy
d) Botany
Answer: a) Ecology
63. Gas most responsible for acid rain:
a) Carbon dioxide
b) Sulphur dioxide
c) Nitrogen oxide
d) Hydrogen sulphide
Answer: b) Sulphur dioxide
64. Green pigment in leaves:
a) Melanin
b) Chlorophyll
c) Hemoglobin
d) Myoglobin
Answer: b) Chlorophyll
65. Excessive nutrients in water cause:
a) Water hardness
b) Eutrophication
c) Sedimentation
d) Distillation
Answer: b) Eutrophication
66. Gas produced during anaerobic decomposition of organic matter:
a) Carbon dioxide
b) Methane
c) Oxygen
d) Nitrogen
Answer: b) Methane
67. Most environment-friendly energy source:
a) Wind energy
b) Nuclear energy
c) Diesel energy
d) Petrol energy
Answer: a) Wind energy
68. Maximum freshwater on Earth is stored in:
a) Lakes
b) Rivers
c) Glaciers & icecaps
d) Groundwater
Answer: c) Glaciers & icecaps
69. Plants manufacture food by:
a) Digestion
b) Photosynthesis
c) Respiration
d) Fermentation
Answer: b) Photosynthesis
70. Main method of soil conservation:
a) Burning stubble
b) Terrace & contour farming
c) Using chemical fertilizers
d) Ploughing along slopes
Answer: b) Terrace & contour farming
71. Water-conserving irrigation method:
a) Drip irrigation
b) Sprinkler irrigation
c) Canal irrigation
d) Flood irrigation
Answer: a) Drip irrigation
72. Total water vapour in air is:
a) Humidity
b) Temperature
c) Pressure
d) Velocity
Answer: a) Humidity
73. Water movement through plants and evaporation:
a) Germination
b) Transpiration
c) Respiration
d) Photosynthesis
Answer: b) Transpiration
74. Laughing gas:
a) Nitrous oxide
b) Carbon monoxide
c) Methane
d) Oxygen
Answer: a) Nitrous oxide
75. Disease caused by contaminated water:
a) Jaundice
b) Asthma
c) Rickets
d) Night blindness
Answer: a) Jaundice
76. Natural purification of water through soil:
a) Filtration
b) Decantation
c) Sedimentation
d) Centrifugation
Answer: a) Filtration
77. NOT a source of air pollution:
a) Automobile exhaust
b) Factories
c) Forests
d) Burning dry leaves
Answer: c) Forests
78. Solid waste from hospitals is:
a) Industrial waste
b) Radioactive waste
c) Biomedical waste
d) Electronic waste
Answer: c) Biomedical waste
79. Best way to reduce waste generation:
a) Buy products with minimum packaging
b) Use disposable items
c) Eat packed food
d) Buy packaged water bottles
Answer: a) Buy products with minimum packaging
80. Main cause of vulture decline in India:
a) Antibiotics
b) Diclofenac
c) Pesticides
d) Insecticides
Answer: b) Diclofenac
81. Study of birds is called:
a) Ornithology
b) Zoology
c) Botany
d) Ethology
Answer: a) Ornithology
82. “Blue Planet” refers to:
a) Mars
b) Neptune
c) Earth
d) Venus
Answer: c) Earth
83. “Ship of the Desert”:
a) Camel
b) Elephant
c) Horse
d) Lion
Answer: a) Camel
84. Conversion of liquid water to vapour:
a) Condensation
b) Evaporation
c) Filtration
d) Precipitation
Answer: b) Evaporation
85. Water obtained from distillation is:
a) Salty
b) Pure
c) Hard
d) None
Answer: b) Pure water
86. Potable water means:
a) Suitable for drinking
b) Suitable for irrigation
c) Suitable for engines
d) Suitable for washing
Answer: a) Suitable for drinking
87. Non-renewable energy source:
a) Wind
b) Solar
c) Biogas
d) Thermal power
Answer: d) Thermal power
88. Aim of waste segregation:
a) Protect environment
b) Facilitate recycling and disposal
c) Increase waste
d) None
Answer: b) Facilitate recycling and disposal
89. Common urban cooking fuel in India:
a) LPG
b) Kerosene
c) Biogas
d) Charcoal
Answer: a) LPG
90. Pollutants removed by rain is called:
a) Leaching
b) Wet deposition
c) Absorption
d) Condensation
Answer: b) Wet deposition
91. Renewable source that does NOT pollute:
a) Wind energy
b) Nuclear energy
c) Bioenergy
d) Fossil fuels
Answer: a) Wind energy
92. NOT a greenhouse gas:
a) Carbon dioxide
b) Methane
c) Nitrous oxide
d) Nitrogen
Answer: d) Nitrogen
93. Treatment of contaminated groundwater:
a) Bioremediation
b) Chlorination
c) Aeration
d) Filtration
Answer: a) Bioremediation
94. Gas used in food packaging to increase shelf life:
a) Oxygen
b) Nitrogen
c) Carbon dioxide
d) Hydrogen
Answer: b) Nitrogen
95. Best method to conserve biodiversity:
a) Creating protected areas
b) Hunting
c) Capturing exotics
d) Deforestation
Answer: a) Creating protected areas
96. Plastic that can be recycled repeatedly:
a) Thermoplastics
b) Thermosetting plastics
c) Synthetics
d) Polyesters
Answer: a) Thermoplastics
97. Conversion of food into simpler substances:
a) Photosynthesis
b) Digestion
c) Respiration
d) Germination
Answer: b) Digestion
98. Non-magnetic metal:
a) Nickel
b) Iron
c) Copper
d) Cobalt
Answer: c) Copper
99. Most common non-renewable energy used for electricity in India:
a) Solar
b) Coal
c) Wind
d) Geothermal
Answer: b) Coal
100. Mineral essential for strong bones & teeth:
a) Iron
b) Potassium
c) Calcium
d) Zinc
Answer: c) Calcium
LEVEL 3 (CLASSES 9 AND 10) QNO 101-150
101. Largest inland saltwater lake in India:
a) Chilika
b) Sambhar
c) Lonar Crater
d) Pulicat
Answer: b) Sambhar
102. Largest source of irrigation in India:
a) Rivers
b) Canals
c) Lakes
d) Wells and tube-wells
Answer: d) Wells and tube-wells
103. NOT an example of diffusion:
a) Fragrance of perfume
b) Fogging of mirror during hot shower
c) Aroma of food
d) Teabag in hot water
Answer: b) Fogging of a mirror
104. Ravi & Beas Water Disputes Tribunal concerns:
a) Punjab, Haryana, and J&K
b) Punjab, Haryana, and Delhi
c) Punjab, Haryana, and Rajasthan
d) Punjab, Haryana, and Uttar Pradesh
Answer: c) Punjab, Haryana, and Rajasthan
105. Institute for ocean study under CSIR:
a) Marine Oceans Study
b) Centre for the Study of Oceans
c) National Institute of Oceanography
d) National Centre for Oceanography
Answer: c) National Institute of Oceanography
106. First Indian state to ban plastic bags (1998):
a) Assam
b) Meghalaya
c) Sikkim
d) Manipur
Answer: c) Sikkim
107. Agency that laid guidelines for dismantling e-waste:
a) Local panchayats
b) Municipalities
c) Industrial Development Board
d) Central Pollution Control Board
Answer: d) Central Pollution Control Board
108. Plastic thermal degradation without oxygen:
a) Incineration
b) Pyrolysis
c) Anaerobic digestion
d) Nitrification
Answer: b) Pyrolysis
109. Toxic element in LCDs:
a) Arsenic
b) Cadmium
c) Mercury
d) Lead
Answer: c) Mercury
110. Aerobic bacteria – correct statement:
(i) Thrive in absence of oxygen
(ii) Consume organic matter
a) Only (i)
b) Only (ii)
c) Both
d) Neither
Answer: b) Only (ii)
111. Tag denoting geographical origin:
a) ISI
b) T™
c) GI
d) PR
Answer: c) GI
112. NOT an agro-based industry:
a) Sugar
b) Cement
c) Cotton textiles
d) Oil industry
Answer: b) Cement
113. High carbohydrate food:
a) Eggs & dairy
b) Rice & cereals
c) Meat & fish
d) Fruits & vegetables
Answer: b) Rice & cereals
114. Milk is a poor source of:
a) Protein
b) Calcium
c) Vitamin C
d) Vitamin B12
Answer: c) Vitamin C
115. MSP stands for:
a) Maximum Supply Price
b) Maximum Support Price
c) Minimum Support Price
d) Minimum Supply Price
Answer: c) Minimum Support Price
116. Commercial farming with high rainfall & temp:
a) Shifting agriculture
b) Plantation agriculture
c) Horticulture
d) Extensive agriculture
Answer: b) Plantation agriculture
117. Consequences of global warming in India:
a) Glacial melt → floods → water stress
b) Higher ozone & pollution
c) Extreme weather impacts
d) All of the above
Answer: d) All of the above
118. Carbon intensity refers to:
a) CO₂ per megajoule
b) Emission rate per activity
c) Ratio of GHG emissions to GDP
d) All developmental pollution
Answer: c) Ratio of GHG emissions to GDP
119. System for spatial data analysis:
a) Digital cartography
b) Simulation models
c) GIS
d) Google Earth
Answer: c) GIS
120. Most variable climate system component:
a) Cryosphere
b) Biosphere
c) Atmosphere
d) Hydrosphere
Answer: b) Biosphere
121. Organisms too small to be seen:
a) Animals
b) Microorganisms
c) Mammals
d) Birds
Answer: b) Microorganisms
122. Process by which plants convert sunlight to energy:
a) Photosynthesis
b) Respiration
c) Digestion
d) Fermentation
Answer: a) Photosynthesis
123. NOT a cause of air pollution:
a) Industrial emissions
b) Forest fires
c) Automobile exhaust
d) Wind blowing leaves
Answer: d) Wind blowing leaves
124. Gas mainly causing global warming:
a) Oxygen
b) Carbon dioxide
c) Nitrogen
d) Methane
Answer: b) Carbon dioxide
125. Non-renewable resource:
a) Solar
b) Wind
c) Coal
d) Hydropower
Answer: c) Coal
126. Breakdown of organic matter without oxygen:
a) Aerobic decomposition
b) Anaerobic decomposition
c) Combustion
d) Photosynthesis
Answer: b) Anaerobic decomposition
127. Photosynthesis occurs in:
a) Roots
b) Stem
c) Leaves
d) Flowers
Answer: c) Leaves
128. Water percentage in human body:
a) 50%
b) 60%
c) 70%
d) 80%
Answer: c) 70%
129. Animals eating both plants & animals:
a) Herbivores
b) Carnivores
c) Omnivores
d) Detritivores
Answer: c) Omnivores
130. Variety of life in ecosystem means:
a) Biodiversity
b) Ecology
c) Genetic diversity
d) Species diversity
Answer: a) Biodiversity
131. Sustainable development means:
a) Meet present needs without harming future
b) Use all resources
c) Ignore environment
d) Develop cities only
Answer: a)
132. Energy from Earth’s heat:
a) Solar
b) Geothermal
c) Nuclear
d) Wind
Answer: b) Geothermal
133. Main cause of ozone depletion:
a) CO₂
b) CFCs
c) Methane
d) Water vapor
Answer: b) CFCs
134. NOT an effect of deforestation:
a) Loss of biodiversity
b) Soil erosion
c) Increased rainfall
d) Climate change
Answer: c) Increased rainfall
135. King of the Jungle:
a) Tiger
b) Lion
c) Elephant
d) Leopard
Answer: b) Lion
136. Composting is:
a) Burning waste
b) Decomposition of organic material
c) Burying waste
d) Dumping waste
Answer: b)
137. Most important for soil fertility:
a) Sand
b) Clay
c) Organic matter
d) Gravel
Answer: c) Organic matter
138. Largest producer of solar energy:
a) China
b) India
c) USA
d) Germany
Answer: a) China
139. Gas responsible for acid rain:
a) SO₂
b) Oxygen
c) Nitrogen
d) CO₂
Answer: a) Sulfur dioxide
140. Watershed means:
a) Land draining to one water body
b) Large reservoir
c) River delta
d) Aquifer
Answer: a)
141. Liquid → vapor:
a) Condensation
b) Evaporation
c) Precipitation
d) Transpiration
Answer: b) Evaporation
142. Kyoto Protocol is about:
a) Climate change
b) Wildlife
c) Marine pollution
d) Deforestation
Answer: a)
143. Renewable source:
a) Coal
b) Petroleum
c) Biomass
d) Nuclear
Answer: c) Biomass
144. Plants releasing water vapor:
a) Transpiration
b) Perspiration
c) Respiration
d) Photosynthesis
Answer: a) Transpiration
145. Most abundant element in Earth’s crust:
a) Oxygen
b) Silicon
c) Aluminum
d) Iron
Answer: a) Oxygen
146. Greenhouse effect means:
a) Trapping of heat by gases
b) Growing plants in greenhouse
c) Cooling
d) Ozone depletion
Answer: a)
147. Most abundant gas in atmosphere:
a) Oxygen
b) Nitrogen
c) CO₂
d) Argon
Answer: b) Nitrogen
148. Main cause of coral reef destruction:
a) Overfishing
b) Pollution & global warming
c) Tsunamis
d) Sedimentation
Answer: b)
149. Farming after clearing & burning:
a) Terrace farming
b) Shifting cultivation
c) Crop rotation
d) Organic farming
Answer: b)
150. Mode of transmission of malaria:
a) Airborne
b) Waterborne
c) Vector-borne (mosquitoes)
d) Direct contact
Answer: c) Vector-borne