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11.

Mohorovic Discontinuity is the difference of density from:

A.	Core to crust	B.	Mental to core
C.	Crust to mental	D.	Core to mental

12.

The crust accounts for _______ of earth's mass.

A.	1.01%	B.	0.02%
C.	0.03%	D.	0.04%

13.

Oxygen in earth crust is _______ .

A.	27.70%	B.	37.70%
C.	47.70%	D.	57.70%

14.

________ rocks are there in oceanic crust.

A.	Hard	B.	Soft
C.	Granite	D.	Basaltic

15.

If an earthquake occurs at 0 degree P and S waves are recorded everywhere to ______ degrees from its source.

A.	103	B.	104
C.	105	D.	106

16.

An average depth of Sial varies from ______ km.

A.	30-300	B.	40-30
C.	50-300	D.	60-300

17.

The most rigid and crystallize part of earth is _______.

A.	Asthenosphere	B.	Lithosphere
C.	Mesosphere	D.	Centrospheres

18.

According to Jaffery's division the 3rd layer is made up of _________.

A.	Dunite & Predolite	B.	Dioite & Predolite
C.	Dunite & Dionte	D.	Diorite & Thicklite

19.

_______ has divided the entire earth into two broad divisions.

A.	R.A. Dally	B.	Arthur Holmes
C.	Suess	D.	Jeffrey

20.

The proportion of ______ rocks decreases with depth.

A.	Silicon	B.	Iron
C.	Lead	D.	Aluminum