🌿 Environmental Science | MCQs (Classes 1–10)
- Which of these is a renewable source of energy?
A) Coal
B) Natural Gas
C) Solar Energy ✅
D) Petroleum - Trees help reduce:
A) Oxygen
B) Carbon dioxide ✅
C) Rainfall
D) Water - Which of the following causes air pollution?
A) Walking
B) Vehicle smoke ✅
C) Planting trees
D) Using solar energy - What is the main source of energy for the Earth?
A) Moon
B) Sun ✅
C) Wind
D) Fire - Which of these is not biodegradable?
A) Banana peel
B) Plastic bag ✅
C) Paper
D) Cotton cloth - Which gas do plants absorb during photosynthesis?
A) Oxygen
B) Carbon dioxide ✅
C) Nitrogen
D) Hydrogen - The process of cutting down trees is called:
A) Deforestation ✅
B) Reforestation
C) Plantation
D) Soil erosion - Which is the largest ecosystem on Earth?
A) Desert
B) Ocean ✅
C) Forest
D) River - A plant-eating animal is called:
A) Carnivore
B) Herbivore ✅
C) Omnivore
D) Insectivore - Which one is not a natural resource?
A) Air
B) Water
C) Soil
D) Plastic ✅
- The three R’s of environmental conservation are:
A) Reduce, Replace, Reuse
B) Reduce, Reuse, Recycle ✅
C) Reuse, Retain, Reduce
D) Recycle, Recreate, Remove - Soil erosion is mainly caused by:
A) Plantation
B) Cutting of trees ✅
C) Organic farming
D) Recycling - Which of these animals is endangered?
A) Tiger ✅
B) Dog
C) Cow
D) Cat - What do we call waste that rots naturally?
A) Biodegradable ✅
B) Non-biodegradable
C) Organic
D) Toxic - Which of these helps conserve water?
A) Leaving the tap open
B) Fixing leaky taps ✅
C) Washing car daily
D) Watering lawns daily
- Which layer of the Earth contains life?
A) Core
B) Mantle
C) Crust ✅
D) Inner core - Which part of the plant is mostly responsible for photosynthesis?
A) Root
B) Stem
C) Leaf ✅
D) Flower - Which of the following is used for making compost?
A) Glass
B) Vegetable peels ✅
C) Plastic
D) Metal - The natural home of an animal is called:
A) Nest
B) Habitat ✅
C) Shelter
D) Den - Which of these causes water pollution?
A) Using a shower
B) Rainwater
C) Throwing garbage in rivers ✅
D) Drinking water
- What helps prevent soil erosion?
A) Planting trees ✅
B) Building roads
C) Overgrazing
D) Construction - Which is the cleanest source of energy?
A) Oil
B) Wind ✅
C) Coal
D) Gasoline - Earth Day is celebrated on:
A) 5th June
B) 15th August
C) 22nd April ✅
D) 1st January - Which part of the water cycle involves water vapor turning into water?
A) Evaporation
B) Precipitation
C) Condensation ✅
D) Filtration - An example of a non-renewable resource is:
A) Wind
B) Sunlight
C) Petroleum ✅
D) Biomass
- Which of these animals lives in water?
A) Tiger
B) Dolphin ✅
C) Lion
D) Deer - Which of these is found in the Arctic region?
A) Polar Bear ✅
B) Camel
C) Elephant
D) Zebra - Excess carbon dioxide in the atmosphere leads to:
A) Acid rain
B) Global warming ✅
C) Ozone depletion
D) Earthquake - Which of these is a decomposer?
A) Lion
B) Cow
C) Fungus ✅
D) Snake - What is ozone layer responsible for?
A) Blocking harmful UV rays ✅
B) Increasing rainfall
C) Causing winds
D) Protecting animals from hunger
- The term ‘recycle’ means:
A) To throw waste
B) To burn waste
C) To use waste material again ✅
D) To bury waste - Which human activity causes the most air pollution?
A) Sports
B) Reading
C) Burning fossil fuels ✅
D) Listening to music - Which one is a desert plant?
A) Mango
B) Cactus ✅
C) Rose
D) Lotus - Which of these is the source of oxygen in the air?
A) Rocks
B) Trees ✅
C) Water
D) Soil - What do animals need to survive?
A) Clothes
B) Books
C) Food, water, shelter ✅
D) Games
- Which of these is a natural disaster?
A) Firecrackers
B) Earthquake ✅
C) Pollution
D) Dam - What is compost made from?
A) Kitchen and garden waste ✅
B) Chemicals
C) Plastic
D) Metal - Which bird is known for its migration?
A) Sparrow
B) Crow
C) Arctic Tern ✅
D) Peacock - The Amazon rainforest is located in:
A) Africa
B) South America ✅
C) Europe
D) Asia - What do we call the variety of plants and animals in an area?
A) Biodiversity ✅
B) Biogeography
C) Ecology
D) Forest
- Which of these helps recharge groundwater?
A) Building roads
B) Rainwater harvesting ✅
C) Throwing waste
D) Using pumps - Which of these animals lays eggs?
A) Cat
B) Turtle ✅
C) Cow
D) Dog - Which is a natural cause of air pollution?
A) Factories
B) Volcanoes ✅
C) Cars
D) Trains - What is the most essential element for human survival?
A) Mobile
B) Car
C) Water ✅
D) Fan - Why should we protect forests?
A) For hunting
B) To build houses
C) For clean air and biodiversity ✅
D) To play
Which of these helps in keeping the environment clean?
A) Throwing plastic
B) Segregating waste ✅
C) Littering
D) Burning leaves
The process by which plants release oxygen is called:
A) Respiration
B) Photosynthesis ✅
C) Germination
D) Evaporation
Which energy is used in solar cookers?
A) Wind energy
B) Solar energy ✅
C) Hydro energy
D) Kinetic energy
Animals that eat both plants and animals are called:
A) Herbivores
B) Carnivores
C) Omnivores ✅
D) Insectivores
Noise pollution is mainly caused by:
A) Water
B) Loudspeakers and vehicles ✅
C) Fans
D) Lights
Quizephilia 