Question

Match List - I with List - II 

List - I (Earth Layers)	Depth / Thickness
A. Lithosphere	II. \(105\ \text{km}\)
B. Moho	I. \(2\ \text{km}\)
C. Core	IV. \(3500\ \text{km}\)
D. Mantle	III. \(2900\ \text{km}\)

• A. A-II, B-I, C-IV, D-III
• B. A-I, B-II, C-IV, D-III
• C. A-III, B-IV, C-II, D-I
• D. A-IV, B-III, C-I, D-II

Hint:

Mantle thickness is approximately \(2900\ \text{km}\), while the core is about \(3500\ \text{km}\) thick.

Answer 1

The Correct Option is A

Concept:
The Earth's internal structure is divided into layers such as lithosphere, mantle and core. Each has an approximate average thickness.

Step 1: Match Lithosphere.
The lithosphere has an approximate average thickness of about: \[ 105\ \text{km} \] \[ A\rightarrow II \]

Step 2: Match Moho.
Moho represents the Mohorovicic discontinuity zone and is matched with: \[ 2\ \text{km} \] \[ B\rightarrow I \]

Step 3: Match Core.
The core has an approximate thickness of about: \[ 3500\ \text{km} \] \[ C\rightarrow IV \]

Step 4: Match Mantle.
The mantle extends to about: \[ 2900\ \text{km} \] \[ D\rightarrow III \] Therefore, the correct matching is: \[ A-II,\ B-I,\ C-IV,\ D-III \] \[ \therefore \text{Correct Answer is (A)} \]