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

Related Mcqs:

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

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

2. Fine-graned rocks formed on earth crust are called____________________?

   A. Intensive igneous rock
   B. Extrusive rock
   C. Sedimentary rock
   D. Plutonic

3. Igneous rocks are called:__________?

   A. Primary rocks
   B. Secondary rocks
   C. Aqueous rocks
   D. None of the above

   Submitted by: Shafiq Rehman

4. 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

5. Metamorphic rocks are classified into:___________?

   A. Foliated metamorphic rocks
   B. Non-foliated metamorphic rocks
   C. Both a & b
   D. None of a & b

   Submitted by: Shafiq Rehman

6. Element responsible pollen grain of plant__________?

   A. N
   B. P
   C. K
   D. B

   Submitted by: Hakeem Taj Shapuki

7. Plutonic rocks are also called____________________?

   A. Intrusive igneous
   B. Metamorphic
   C. Sedimentary
   D. Extrusive igneous rock

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