Composition of igneous rock is determined by___________?

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1. Igneous rock whose crystal is 1 cm called____________________?

   A. Plutonic B. Felsic C. Pegmatitic D. Mafic...

2. 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...

3. 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...

4. Igneous rocks are called:__________?

   A. Primary rocks B. Secondary rocks C. Aqueous rocks D. None of the above Submitted by: Shafiq Rehman...

5. Which rock contain potash feldspar ?

   A. Syeruite B. Gabbro C. Norile D. All the above...

6. Color off basic matic rock is_____________________?

   A. Light green B. Dark colored C. Yellow D. Blue...

7. Structure and size of aphantic rock is________________?

   A. Course-grained like B. Fine grained C. Large-Glassy D. Phenocryst...

8. Basalt is a __________ rock:

   A. fine-grained B. Dark coloured C. both A & B D. None of the above Submitted by: Shafiq Rehman...

9. Irregular rock masses formed in the pre-existing cracks & crevices are:__________?

   A. Sills B. Dikes C. Lacoliths D. Batholiths Submitted by: Mir Mehrbiyar...

10. 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...