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Rocks and Minerals MCQs | Rocks and Minerals Multiple Choice Questions and Answers

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Free download in PDF Rocks and Minerals Multiple Choice Questions and Answers for competitive exams. These short objective type questions with answers are very important for Board exams as well as competitive exams. These short solved questions or quizzes are provided by Gkseries.
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(1) Coals and petroleum found in _________ types of rocks.
[A] Granite rock
[B] Igneous rock
[C] Metamorphic rock
[D] Sedimentary rock.
Answer: Sedimentary rock.
(2) When molten rock comes out the surface of earth, it is known as –
[A] Lava
[B] Magma
[C] Laccolith
[D] Metamorphic
Answer: Lava

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(3) How the Himalayas are formed?
[A] due to pressure of two large land form
[B] due to weakness of the earth crust
[C] due to folding of the earth crust
[D] due to folding of the geosyncline named Tethys
Answer: due to folding of the geosyncline named Tethys
(4) ____________ predominantly acts as the agent of chemical erosion of soil.
[A] Seawave
[B] Wind
[C] Underground water
[D] Glacier
Answer: Underground water
(5) Process of chemical weathering is represented by-
[A] expansion and contraction due to heat
[B] Mass exfolation
[C] growth of crystal and frost action
[D] Hydration and Hydrolysis
Answer: Hydration and Hydrolysis
(6) The climate condition which conduct mechanical weathering is/are

i) hot ii) cold iii) wet iv) dry

[A] options i) and ii)
[B] option iii) only
[C] options iii and iv
[D] options i) and iii)
Answer: options i) and iii)
(7) Why the denudational processes have not reduced the land masses to a level surface?
[A] Because the earth movements have uplifted the land mass
[B] Because of changing sea level
[C] Because lack of time
[D] None Of The Above
Answer: Because the earth movements have uplifted the land mass
(8) The breakdown of minerals due to the decaying vegetation producing organic acid is called-
[A] Biological weathering
[B] Degradational weathering
[C] Chemical weathering
[D] Physical weathering
Answer: Chemical weathering
(9) Wadi a kind of valley is occurred
[A] at hot desert with occasional heavy rainfall
[B] at high mountain range where precipitation is high
[C] at the beach where enough sand exists
[D] None of the Above
Answer: at hot desert with occasional heavy rainfall
(10) Which one among the following rocks does not belong to the same group?
[A] Shale
[B] Limestone
[C] Slate
[D] Sandstone
Answer: Slate
(11) In which among the following terrains the bore wells and canals can be dug easily?
[A] Gneiss, granites and basaltic terrain of Peninsular India
[B] Rolling and dotted hilly terrain of North-east India
[C] Soft alluvium of the Northern Plains
[D] Confined aquifer below the normal water table
Answer: Soft alluvium of the Northern Plains
(12) Which of the following statements is/are correct?

1.The major constituent mineral of granite rock is quartz. 2. The major constituent mineral of sandstone rock is feldspar. 3. The major constituent mineral of limestone rock is dolomite.

Select the correct answer using the code given below:
[A] 1, 2 and 3
[B] 3 only
[C] 1 and 2 only
[D] 2 and 3 only
Answer: 1, 2 and 3
(13) Which one among the following is a primary rock?
[A] Sedimentary
[B] Igneous
[C] Metamorphic
[D] None of the above
Answer: Igneous
(14) Consider the following statements about rocks:

1. Shale becomes Slate through metamorphosis 2. Shale is converted to Slate when it is subjected to tremendous pressure and high temperature

Which of statements given above is/are correct?
[A] 1 only
[B] 2 only
[C] Both 1 and 2
[D] Neither 1 nor 2
Answer: 1 only
(15) Which one of the following is generally found in sedimentary rocks?
[A] Basalt
[B] Silica
[C] Shale
[D] Magnesium
Answer: Silica
(16) The earth’s crust is the thinnest
[A] under the mountain ranges
[B] under continental masses
[C] at ocean bottoms
[D] None of the above
Answer: at ocean bottoms
(17) Which of these is not responsible for the formation of igneous rock?
[A] sediments
[B] liquid rock
[C] magma
[D] lava
Answer: sediments
(18) Magma that cools slowly beneath the earth's surface produces
[A] marble
[B] intrusive igneous rocks
[C] fine-grained metamorphic rocks
[D] extrusive igneous rocks
Answer: intrusive igneous rocks
(19) Which process is necessary for the formation of igneous rocks?
[A] erosion
[B] deposition
[C] metamorphism
[D] solidification
Answer: solidification
(20) In which type of rock would you expect to find fossils?
[A] granite
[B] obsidian
[C] shale
[D] marble
Answer: shale

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