MCQ on Inside Our Earth

CBSE 7th Class MCQ CBSE Multiple Choice Questions (MCQ)

MCQ on Inside Our Earth

1- The uppermost layer over the earth’s surface is called ………………..

(A) Crust

(B) Mantle

(C) Inner Core

(D) Outer Core

 

2- Which is the thinnest layer of the earth?

(A) Crust

(B) Mantle

(C) Inner Core

(D) Outer Core

 

3- Crust is about ………….km on the continental masses and only ………..km on the ocean floors.

(A) 5, 35

(B) 35, 5

(C) 25, 5

(D) 5, 25

 

4- Which of the following minerals constituents the continental mass of crust?

(A) Silica

(B) Alumina

(C) Both A and B

(D) None of the above

 

5- The continental crust mainly consist of Silica and Alumina therefore it is called……………

(A) Sima

(B) Nife

(C) Simal

(D) Sial

 

6- The oceanic crust mainly consists of Silica and Magnesium therefore it is called ……………

(A) Sial

(B) Sima

(C) Nife

(D) Simal

 

7- Where is the deepest mine located in the world?

(A) South America

(B) South Africa

(C) Australia

(D) Argentina

 

8- Mantle extends up to a depth of …………….km below the crust.

(A) 4900

(B) 3900

(C) 2900

(D) 1900

 

9- Which is the innermost layer of the earth?

(A) Core

(B) Mantle

(C) Crust

(D) None of the above

 

10- What is the radius of the core?

(A) 3500 km

(B) 2500 km

(C) 1500 km

(D) 500 km

 

ANSWERS:

1-(A), 2-(A), 3-(B), 4-(C), 5-(D), 6-(B), 7-(B), 8-(C), 9-(A), 10-(A)