Major Domains of the Earth MCQs
Major Domains of the Earth – MCQs with Answers & Explanations
Class: CBSE Class 6
Subject: Social Science (Geography)
Section: The Earth: Our Habitat
Topic: Major Domains of the Earth
Subject: Social Science (Geography)
Section: The Earth: Our Habitat
Topic: Major Domains of the Earth
Based on NCERT | CBSE Board Examinations
1. Which is the largest domain of the Earth?
Answer: C. Atmosphere
The atmosphere is the vast blanket of air surrounding the Earth. It extends hundreds of kilometers above the surface, making it the largest domain.
The atmosphere is the vast blanket of air surrounding the Earth. It extends hundreds of kilometers above the surface, making it the largest domain.
2. The solid portion of the Earth is called:
Answer: C. Lithosphere
Lithosphere includes landforms like mountains, plateaus, and plains. It forms the Earth’s crust where we live.
Lithosphere includes landforms like mountains, plateaus, and plains. It forms the Earth’s crust where we live.
3. Which domain consists of water bodies?
Answer: A. Hydrosphere
Hydrosphere includes oceans, seas, rivers, lakes, glaciers, and groundwater.
Hydrosphere includes oceans, seas, rivers, lakes, glaciers, and groundwater.
4. Which domain supports life on Earth?
Answer: B. Biosphere
Biosphere is the narrow zone where land, water, and air interact to support living organisms.
Biosphere is the narrow zone where land, water, and air interact to support living organisms.
5. Which gas is most abundant in the atmosphere?
Answer: B. Nitrogen
Nitrogen forms about 78% of the atmosphere, making it the most abundant gas.
Nitrogen forms about 78% of the atmosphere, making it the most abundant gas.
6. Oceans cover about _____ of the Earth’s surface.
Answer: C. 71%
Most of Earth is covered by water, mainly in the form of oceans.
Most of Earth is covered by water, mainly in the form of oceans.
7. Which is NOT part of the hydrosphere?
Answer: C. Air
Air belongs to the atmosphere, not the hydrosphere.
Air belongs to the atmosphere, not the hydrosphere.
8. The biosphere exists because of interaction between:
Answer: C. Land, Water & Air
Life exists where lithosphere, hydrosphere, and atmosphere meet.
Life exists where lithosphere, hydrosphere, and atmosphere meet.
9. Which layer protects us from harmful sun rays?
Answer: B. Stratosphere
The ozone layer in the stratosphere absorbs harmful ultraviolet rays.
The ozone layer in the stratosphere absorbs harmful ultraviolet rays.
10. Which is the main source of fresh water?
Answer: C. Rivers & Lakes
They provide usable freshwater for humans and animals.
They provide usable freshwater for humans and animals.
11. The air we breathe belongs to which domain?
Answer: B. Atmosphere
Atmosphere provides oxygen essential for breathing.
Atmosphere provides oxygen essential for breathing.
12. Which domain includes mountains and plains?
Answer: C. Lithosphere
All landforms are part of the lithosphere.
All landforms are part of the lithosphere.
13. Which is the deepest ocean?
Answer: B. Pacific
The Pacific Ocean is the largest and deepest ocean.
The Pacific Ocean is the largest and deepest ocean.
14. Living organisms are found in:
Answer: D. All domains
Life exists on land, in water, and in air.
Life exists on land, in water, and in air.
15. Which domain provides soil for agriculture?
Answer: B. Lithosphere
Soil is part of the Earth’s crust.
Soil is part of the Earth’s crust.
16. Clouds are formed in the:
Answer: C. Atmosphere
Clouds form when water vapor condenses in the atmosphere.
Clouds form when water vapor condenses in the atmosphere.
17. Which ocean lies between Africa and Australia?
Answer: C. Indian Ocean
It is named after India.
It is named after India.
18. The thin zone of contact of land, water, and air is:
Answer: C. Biosphere
This is where life exists.
This is where life exists.
19. Which is the smallest ocean?
Answer: A. Arctic
It surrounds the North Pole.
It surrounds the North Pole.
20. Which domain makes weather changes possible?
Answer: B. Atmosphere
All weather phenomena occur in the atmosphere.
All weather phenomena occur in the atmosphere.