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Rocks and Minerals Quiz | Rocks and Minerals Objective Type Questions and Answers

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(21) Which characteristic of rocks tends to increase as the rocks are metamorphosed?
[A] density
[B] porosity
[C] permeability
[D] number of fossils present
Answer: density
(22) Igneous, sedimentary, and metamorphic rocks are usually composed of
[A] intergrown crystals
[B] minerals
[C] fossils
[D] sediments
Answer: minerals

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(23) Which of the following rocks is different from others?
[A] marble
[B] gypsum
[C] sandstone
[D] limestone
Answer: marble
(24) Which of the following statements regarding the Deccan Trap is/are correct?

1. Intense volcanic activity in the form of fissure eruption took place towards the end of Cretaceous period 2. The volcanic lava spread out in horizontal sheets 3. The regur soil found here is rich in nitrogen

Select the correct answer using the code given below:
[A] 1 and 2 only
[B] 1, 2 and 3
[C] 3 only
[D] 1 only
Answer: 1 and 2 only
(25) The Damuda series of Gondwana system has three stages, namely, Raniganj, Barren Rocks and Barakar. The middle stage is called Barren because
[A] it consists of coal and not iron
[B] it consists of iron and not coal
[C] it consists of neither coal nor iron
[D] it is a sedimentary layer consisting of shale and clay
Answer: it is a sedimentary layer consisting of shale and clay
(26) The Deccan Trap Formation was caused by
[A] Shield eruption
[B] Composite eruption
[C] Caldera eruption
[D] Flood basalt eruption
Answer: Shield eruption
(27) What does the residual hill known in desert region?
[A] Inselberg
[B] Hum
[C] Cirque
[D] None Of The Above
Answer: Inselberg
(28) Bowl shaped depression is also called as –
[A] Glacial trough
[B] Cirque
[C] Waki
[D] Barchan
Answer: Cirque
(29) Which of the following is known when the rock is remove layer by layer due to weathering?
[A] exfolation
[B] block disintegration
[C] dellation
[D] granular disintegration
Answer: exfolation
(30) Which is the principle cause of exposure of rock to the changes of temperature?
[A] Mechanical weathering
[B] Chemical weathering
[C] Biological weathering
[D] Mortification weathering
Answer: Chemical weathering
31 Which of the following is an example of potholes in river beds?
[A] corrosion
[B] erosion
[C] oxidation
[D] hydration
Answer: corrosion
32 How the soil erosion can be prevented?
[A] Growing plants on a large-scale
[B] Increasing cohesive force between the molecule by adding chemicals
[C] Making the land incline
[D] Deforestation
Answer: Growing plants on a large-scale
33 Which of the following condition is most ideal for chemical weathering?
[A] Cold and dry
[B] Cold and humid
[C] hot and humid
[D] None of the above
Answer: hot and humid
34 Which process in known as chemical weathering process?
[A] Expansion due to thermal energy
[B] Frost action
[C] Oxidation and Reduction
[D] Hydraulic action
Answer: Oxidation and Reduction
35 What the molten rock is known when it stay under the surface of earth?
[A] Lava
[B] Magma
[C] Basalt
[D] Ignite
Answer: Magma
36 Which metal is the most abundant in the earth crust?
[A] Iron
[B] Zinc
[C] Aluminium
[D] None of the above
Answer: Aluminium

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