Class 11 Geography Chapter 3 MCQ | Interior Of The Earth Important MCQ

This Article will provide you with Class 11 Geography Chapter 3 MCQ. These are very helpful for your exams. Use this MCQ, which I have provided based on my own class 11 notes. This can help you practice your chapter. I have also provided ARQs and statement-based questions for this chapter. Use them and get the best grades you can achieve.

Chapter 3 – Interior of the Earth from Fundamentals of Physical Geography.

Table of Contents

Top 30 Class 11 Geography Chapter 3 MCQ

Q1. The radius of the Earth is approximately:
(a) 5,378 km
(b) 6,378 km
(c) 7,378 km
(d) 8,378 km
Answer: (b) 6,378 km

Q2. The deepest drill at Kola in Arctic Ocean reached:
(a) 8 km
(b) 10 km
(c) 12 km
(d) 20 km
Answer: (c) 12 km

Q3. Which of the following is a direct source of information about Earth’s interior?
(a) Seismic waves
(b) Gravity anomalies
(c) Mining and volcanic materials
(d) Meteors
Answer: (c) Mining and volcanic materials

Q4. Which of the following is not an indirect source of information?
(a) Meteors
(b) Magnetic field
(c) Volcanic eruptions
(d) Seismic activity
Answer: (c) Volcanic eruptions

Q5. Gravity anomalies are useful in knowing:
(a) Climate variations
(b) Soil fertility
(c) Distribution of mass in Earth’s crust
(d) Ocean currents
Answer: (c) Distribution of mass in Earth’s crust

Q6. The point inside Earth where earthquake originates is:
(a) Epicentre
(b) Hypocentre (Focus)
(c) Shadow zone
(d) Asthenosphere
Answer: (b) Hypocentre (Focus)

Q7. The point on surface directly above the focus is called:
(a) Seismograph
(b) Shadow zone
(c) Epicentre
(d) Hypocentre
Answer: (c) Epicentre

Q8. Which instrument records earthquake waves?
(a) Altimeter
(b) Seismograph
(c) Barometer
(d) Gravimeter
Answer: (b) Seismograph

Q9. Which earthquake waves arrive first?
(a) P-waves
(b) S-waves
(c) Surface waves
(d) Secondary waves
Answer: (a) P-waves

Q10. Which waves can travel only through solids?
(a) P-waves
(b) S-waves
(c) Surface waves
(d) Both (a) and (c)
Answer: (b) S-waves

Q11. Which waves are most destructive?
(a) P-waves
(b) S-waves
(c) Surface waves
(d) Shadow waves
Answer: (c) Surface waves

Q12. The zone where earthquake waves are not recorded is called:
(a) Shadow zone
(b) Fault zone
(c) Rift valley
(d) Lithosphere
Answer: (a) Shadow zone

Q13. Shadow zone for P-waves lies between:
(a) 95°–145°
(b) 105°–145°
(c) 120°–160°
(d) 90°–150°
Answer: (b) 105°–145°

Q14. Shadow zone of S-waves covers about:
(a) 10% of Earth
(b) 25% of Earth
(c) 40% of Earth
(d) 50% of Earth
Answer: (c) 40%

Q15. Which earthquakes are most common?
(a) Tectonic
(b) Volcanic
(c) Collapse
(d) Explosion
Answer: (a) Tectonic

Q16. Which scale measures earthquake magnitude?
(a) Mercalli
(b) Beaufort
(c) Richter
(d) Fujita
Answer: (c) Richter

Q17. Which scale measures earthquake intensity (damage)?
(a) Richter
(b) Mercalli
(c) Modified Richter
(d) Richter-Mercalli combined
Answer: (b) Mercalli

Q18. A tremor due to underground mining is called:
(a) Tectonic earthquake
(b) Collapse earthquake
(c) Explosion earthquake
(d) Reservoir-induced earthquake
Answer: (b) Collapse earthquake

Q19. Earthquakes caused by large reservoirs are called:
(a) Reservoir-induced earthquakes
(b) Tectonic earthquakes
(c) Volcanic earthquakes
(d) Man-made quakes
Answer: (a) Reservoir-induced earthquakes

Q20. Which layer has maximum thickness?
(a) Crust
(b) Mantle
(c) Core
(d) Lithosphere
Answer: (b) Mantle

Q21. Thickness of continental crust:
(a) 5 km
(b) 30 km
(c) 70 km in Himalayas
(d) Both b & c
Answer: (d) Both b & c

Q22. Oceanic crust thickness:
(a) 2–3 km
(b) 5 km
(c) 10 km
(d) 20 km
Answer: (b) 5 km

Q23. The upper mantle’s weak zone is called:
(a) Lithosphere
(b) Asthenosphere
(c) Mesosphere
(d) Core
Answer: (b) Asthenosphere

Q24. The outer core is:
(a) Solid
(b) Liquid
(c) Gaseous
(d) Semi-solid
Answer: (b) Liquid

Q25. The inner core is:
(a) Liquid
(b) Solid
(c) Semi-solid
(d) Gaseous
Answer: (b) Solid

Q26. Core of Earth is made up of:
(a) Silicon + Oxygen
(b) Nickel + Iron
(c) Magnesium + Aluminium
(d) Calcium + Sodium
Answer: (b) Nickel + Iron (NIFE)

Q27. Largest volcanoes are:
(a) Shield Volcanoes
(b) Composite Volcanoes
(c) Caldera Volcanoes
(d) Cinder Cones
Answer: (a) Shield Volcanoes

Q28. Deccan Traps were formed by:
(a) Shield eruptions
(b) Flood basalt eruptions
(c) Composite eruptions
(d) Caldera eruptions
Answer: (b) Flood basalt eruptions

Q29. A large dome-shaped intrusive body is called:
(a) Dyke
(b) Batholith
(c) Lacolith
(d) Phacolith
Answer: (c) Lacolith

Q30. Wall-like vertical intrusion formed by cooling magma:
(a) Sill
(b) Dyke
(c) Batholith
(d) Lacolith
Answer: (b) Dyke

Class 11 Geography Chapter 3 MCQ – Assertion–Reason Questions

Q1.
A: S-waves cannot travel through liquids.
R: They are transverse waves and require a rigid medium.
Answer: Both A and R are true, R explains A.

Q2.
A: P-waves arrive first at seismograph stations.
R: They travel faster than other waves.
Answer: Both A and R are true, R explains A.

Q3.
A: Earthquakes always occur in mantle.
R: The lithosphere extends up to 200 km depth.
Answer: A is false, R is true.

Q4.
A: Surface waves are least destructive.
R: They travel at the lowest speed.
Answer: A is false, R is true.

Q5.
A: Epicentre is located below the Earth’s surface.
R: Hypocentre is the point on the surface directly above focus.
Answer: Both A and R are false.

Q6.
A: Outer core is liquid in nature.
R: S-waves cannot pass through it.
Answer: Both A and R are true, R explains A.

Q7.
A: Asthenosphere is the source of magma.
R: It is a weak zone in the upper mantle.
Answer: Both A and R are true, R explains A.

Q8.
A: Volcanic earthquakes occur near tectonic plate boundaries.
R: They are associated with magma movement.
Answer: Both A and R are true, R explains A.

Q9.
A: Richter scale measures the effects of earthquake on people.
R: Mercalli scale measures energy released.
Answer: Both A and R are false.

Q10.
A: Batholiths are small igneous bodies.
R: They form near Earth’s surface.
Answer: Both A and R are false.

Class 11 Geography Chapter 3 MCQ – Statement-Based Questions

Q1. Which of the following are direct sources of Earth’s interior?

Mining
Volcanic eruptions
Seismic waves
(a) 1 & 2
(b) 2 & 3
(c) 1 & 3
(d) All three
Answer: (a) 1 & 2

Q2. Consider the following statements about Earthquake waves:

P-waves are fastest.
S-waves travel through liquids.
Surface waves are most destructive.
Which are correct?
(a) 1 & 3
(b) 2 & 3
(c) Only 2
(d) All three
Answer: (a) 1 & 3

Q3. The lithosphere includes:

Crust
Uppermost mantle
Entire mantle
(a) 1 only
(b) 1 & 2
(c) 2 & 3
(d) All three
Answer: (b) 1 & 2

Q4. Which volcano types are correctly matched?

Shield Volcano – Fluid lava, broad base
Composite Volcano – Alternating lava & ash
Caldera – Explosive, collapsed depression
Flood Basalt – Fluid lava flows covering vast area
(a) 1, 2 & 3 only
(b) 2, 3 & 4 only
(c) 1, 2, 3 & 4
(d) 1 & 4 only
Answer: (c) 1, 2, 3 & 4

Q5. Which intrusive landforms are correctly matched?

Batholith – Large cooled magma chamber
Lacolith – Dome-shaped, shallow depth
Dyke – Vertical wall-like intrusion
Sill – Horizontal sheet-like intrusion
(a) 1, 2 & 3 only
(b) 1, 3 & 4 only
(c) All four
(d) 2 & 4 only
Answer: (c) All four

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