Composition of igneous rock is determined by___________?

A. Depth of molten magma
B. Composition of molten magma
C. Both A and B
D. Composition can not be determined.

Submitted by: Shafiq Rehman

Igneous rock whose crystal is 1 cm called____________________?
A. Plutonic
B. Felsic
C. Pegmatitic
D. Mafic
In Pakistan, The following igneous rocks are found over considerable areas:
A. Marl, gypsum
B. Slate, Shist
C. Dolomite shale, gneiss
D. None of the above
Submitted by: Shafiq Rehman
The relative abundance of three types of rocks ( igneous-metamorphic- sedimentary) in the earth’s crust is_________?
A. 12.5 % -12.5 % – 75%
B. 64.7 % – 27.4 % – 7.9 %
C. none of A & B
D. 7.9% – 27.7 % – 64.4
Submitted by: Shafiq Rehman
Igneous rocks are called:__________?
A. Primary rocks
B. Secondary rocks
C. Aqueous rocks
D. None of the above
Submitted by: Shafiq Rehman
Which rock contain potash feldspar ?
A. Syeruite
B. Gabbro
C. Norile
D. All the above
Color off basic matic rock is_____________________?
A. Light green
B. Dark colored
C. Yellow
D. Blue
Structure and size of aphantic rock is________________?
A. Course-grained like
B. Fine grained
C. Large-Glassy
D. Phenocryst
Basalt is a __________ rock:
A. fine-grained
B. Dark coloured
C. both A & B
D. None of the above
Submitted by: Shafiq Rehman
Irregular rock masses formed in the pre-existing cracks & crevices are:__________?
A. Sills
B. Dikes
C. Lacoliths
D. Batholiths
Submitted by: Mir Mehrbiyar
Fossils are found in which type of rock:
A. Sedimentary rock
B. Metamorphic rock
C. Stratified rock
D. Both A & C
Submitted by: Shafiq Rehman