Here are 40 multiple-choice questions (MCQs) along with their answers for Class 7 CBSE Geography – Chapter 2: Inside Our Earth.
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1. What is the innermost layer of the Earth called?
a) Mantle
b) Crust
c) Core
d) Lithosphere
Ans: c) Core
2. The Earth’s crust is made up of how many main types of rocks?
a) One
b) Two
c) Three
d) Four
Ans: c) Three
3. Which is the outermost layer of the Earth?
a) Core
b) Crust
c) Mantle
d) Magma
Ans: b) Crust
4. What is the main mineral found in the Earth's crust?
a) Silica
b) Nickel
c) Iron
d) Magnesium
Ans: a) Silica
5. The mantle extends up to a depth of approximately how many kilometers?
a) 500 km
b) 1000 km
c) 2900 km
d) 5000 km
Ans: c) 2900 km
6. Which of these is not a type of rock?
a) Igneous
b) Sedimentary
c) Metamorphic
d) Magma
Ans: d) Magma
7. Igneous rocks are formed from:
a) Lava cooling
b) Sand deposition
c) Fossils
d) Air pressure
Ans: a) Lava cooling
8. Sedimentary rocks are formed due to:
a) Solidification of magma
b) High pressure and heat
c) Deposition of sediments
d) Earthquakes
Ans: c) Deposition of sediments
9. Which rock can be transformed into marble?
a) Granite
b) Limestone
c) Shale
d) Basalt
Ans: b) Limestone
10. Which of these rocks is an example of an igneous rock?
a) Marble
b) Sandstone
c) Granite
d) Slate
Ans: c) Granite
11. What is the liquid rock beneath the Earth's surface called?
a) Lava
b) Magma
c) Sediment
d) Soil
Ans: b) Magma
12. Which of these rocks is metamorphic?
a) Basalt
b) Limestone
c) Granite
d) Slate
Ans: d) Slate
13. Which layer of the Earth is known as the "Sima" layer?
a) Crust
b) Mantle
c) Core
d) Outer Core
Ans: b) Mantle
14. Which rock is called "parent rock"?
a) Metamorphic
b) Igneous
c) Sedimentary
d) Fossil
Ans: b) Igneous
15. The Earth’s core is mainly composed of:
a) Iron and Nickel
b) Silica and Aluminium
c) Silica and Magnesium
d) Oxygen and Carbon
Ans: a) Iron and Nickel
16. The word ‘igneous’ comes from the Latin word meaning:
a) Air
b) Fire
c) Water
d) Earth
Ans: b) Fire
17. What is the thickness of the Earth's crust?
a) 5-10 km
b) 30-100 km
c) 50-70 km
d) 100-200 km
Ans: b) 30-100 km
18. Which type of rock is coal?
a) Igneous
b) Sedimentary
c) Metamorphic
d) Volcanic
Ans: b) Sedimentary
19. What causes metamorphic rocks to form?
a) Cooling of lava
b) Heat and pressure
c) Water deposition
d) Earthquake
Ans: b) Heat and pressure
20. The uppermost layer of the Earth is called:
a) Core
b) Mantle
c) Lithosphere
d) Asthenosphere
Ans: c) Lithosphere
21. Which type of igneous rock cools inside the Earth’s surface?
a) Intrusive
b) Extrusive
c) Metamorphic
d) Sedimentary
Ans: a) Intrusive
22. Which rock is used for making statues and buildings?
a) Basalt
b) Marble
c) Granite
d) Sandstone
Ans: b) Marble
23. Which of these is a primary mineral in the Earth's crust?
a) Silicon
b) Gold
c) Copper
d) Zinc
Ans: a) Silicon
24. What is the temperature of the Earth's core?
a) 100°C
b) 1000°C
c) 5000°C
d) 6000°C
Ans: d) 6000°C
25. Which rock type is also known as "fire rock"?
a) Igneous
b) Metamorphic
c) Sedimentary
d) Fossil
Ans: a) Igneous
26. What is the thickest layer of the Earth?
a) Crust
b) Mantle
c) Outer Core
d) Inner Core
Ans: b) Mantle
27. What is the major constituent of the crust?
a) Iron
b) Aluminium
c) Silicon
d) Oxygen
Ans: d) Oxygen
28. Which rock is also known as "lava rock"?
a) Basalt
b) Marble
c) Sandstone
d) Slate
Ans: a) Basalt
29. Rocks are made up of:
a) Minerals
b) Water
c) Fossils
d) Soil
Ans: a) Minerals
30. Which layer is below the crust?
a) Mantle
b) Core
c) Lithosphere
d) Asthenosphere
Ans: a) Mantle
31. What is the hardest natural substance on Earth?
a) Graphite
b) Diamond
c) Quartz
d) Marble
Ans: b) Diamond
32. Which rock is commonly used for making roads?
a) Granite
b) Sandstone
c) Basalt
d) Marble
Ans: c) Basalt
33. What is the solid outer layer of the Earth called?
a) Crust
b) Core
c) Mantle
d) Lithosphere
Ans: d) Lithosphere
34. The process of cooling and hardening of magma forms:
a) Igneous rock
b) Sedimentary rock
c) Metamorphic rock
d) Fossils
Ans: a) Igneous rock
35. Which of the following is a fossil fuel?
a) Diamond
b) Coal
c) Marble
d) Granite
Ans: b) Coal
36. What is the main component of magma?
a) Iron
b) Molten rock
c) Ice
d) Water
Ans: b) Molten rock
37. The Earth’s core is divided into:
a) Two parts
b) Three parts
c) Four parts
d) Five parts
Ans: a) Two parts
38. Which rock is formed under pressure and heat?
a) Sedimentary
b) Igneous
c) Metamorphic
d) Fossil
Ans: c) Metamorphic
39. The Earth’s crust is thicker under:
a) Oceans
b) Mountains
c) Rivers
d) Plains
Ans: b) Mountains
40. Which layer of the Earth is liquid?
a) Inner Core
b) Outer Core
c) Mantle
d) Crust
Ans: b) Outer Core
