Contents

Minimum thickness of crust under oceans is about…
a) 5 km                                   
b) 12 km         
c) 15 km                     
d) 20 km

a

Crust layer of earth is composed of…………...
a) Silicon                    
b) Aluminum
c) both a and b                       
d) None of these

c

Division of cores of earth includes……………
a) Inner core               
b) Fault                       
c) Outer core               
d) Both a and c

d

Mantle:

Layer below crust of earth is…………………
a) Mental                    
b) Core                       
c) Mountain                
d) Trench

a

The thickness of the mantle is about…….
a) 3,000 km                
b) 3,000 km
c) 2,600 km                
d) 2,400 km
(in 5th class GS book 3900 incorrect)

a

Which layer of the earth is like the white of an egg
a) Core                        
b) Crust
c) Mantle                    
d) none of these

c