Igneous rocks are called:__________?

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1. 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...

2. 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...

3. Rocks which are formed by disintegration of pre-existing rocks by weathering are____________________?

   A. Sand stone B. Classics C. Igneous D. Greis...

4. Igneous rock whose crystal is 1 cm called____________________?

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

5. 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...

6. Extrusive rocks are also called as ___________ in which the grain or crystalline structure is too fine to be seen by the unaided eye?

   A. Volcanic Rock B. Igneous Rock C. Aphantic Rock D. Both A & B Submitted by: Amir hameed...

7. Rocks and weathered materials transported by ___________ ,act as initial materials for soil formation?

   A. Water B. Wind C. Glaciers D. All of the above Submitted by: Shafiq Rehman...

8. ______________ consist of particles that are produced by disintegration of pre-existing rocks through the process of weathering:

   A. Clastics B. Non-clastics C. both A & B D. None of the above Submitted by: Shafiq Rehman...

9. Fossils are found in__________type of rocks:

   A. Sedimentary rocks B. Metamorphic rocks C. Aqueous rocks D. both A & C Submitted by: Mir Mehrbiyar...

10. Soil-forming minerals occurring in rocks do not contain any water, they undergo ______________ when exposed to humid conditions & break down as in chemical weathering process:

    A. Carbonation B. Acidification C. Hydration D. Dissolution Submitted by: Shafiq Rehman...