MCQ Questions for Class 11 Geography Chapter 5 Minerals and Rocks with Answers

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Minerals and Rocks Class 11 MCQs Questions with Answers

I. Choose the correct answer

Question 1.
What is the percentage of oxygen in the earth’s crust by weight?
(a) 46.60%
(b) 27.72%
(c) 8.13%
(d) 5.00%

Answer

Answer: (a) 46.60%.


Question 2.
What is the basic source of all minerals in the earth’s crust?
(a) upper surface
(b) magma
(c) crust
(d) none of them

Answer

Answer: (b) magma.


Question 3.
Which one is the most important component of Quartz?
(a) sand
(b) granite
(c) both of them
(d) none of them

Answer

Answer: (c) both of them.


Question 4.
Which one is not the component of pyroxenes?
(a) calcium
(b) magnesium
(c) iron
(d) granite

Answer

Answer: (d) granite.


Question 5.
Which are the major elements of Olivine?
(a) iron
(b) silica
(c) magnesium
(d) all of them

Answer

Answer: (d) all of them.


Question 6.
Which one is the metallic mineral?
(a) silica
(b) carbon
(c) oxygen
(d) gold

Answer

Answer: (d) gold.


Question 7.
Out of these which do not contain the metal content?
(a) sulphur
(b) nitrates
(c) phosphates
(d) all of them

Answer

Answer: (d) all of them.


Question 8.
The science of rocks is known as
(a) Geology
(b) Zoology
(c) Petrology
(d) none of them

Answer

Answer: (c) Petrology.


Question 9.
The rocks which are formed from solidified magma and lava are known as
(a) Sedimentary
(b) Igneous
(c) Sand rocks
(d) Metamorphic

Answer

Answer: (b) Igneous.


Question 10.
What kind of rocks are formed by the deposition/cementation of the fragments?
(a) Sedimentary
(b) Igneous
(c) Pegmatitic
(d) Metamorphic

Answer

Answer: (a) Sedimentary.


Question 11.
Which are the hoarse grained rocks with wide range of composition?
(a) Pegmatitic granite
(b) Pegmatitic diorite
(c) both of them
(d) none of them

Answer

Answer: (c) both of them.


Question 12.
Granite is a type of rock:
(a) Granetoid
(b) Pegmatitic
(c) Glassy
(d) Aphantic

Answer

Answer: (a) Granetoid.


Question 13.
Which one is the type of extrusive rock?
(a) Granetoid
(b) Glassy
(c) Fragmental
(d) Aphantic

Answer

Answer: (c) Fragmental


Question 14.
Deposition cementation of the fragments by external agencies is known as
(a) Sedimentation
(b) Metamorphism
(c) Lithification
(d) none of these

Answer

Answer: (a) Sedimentation.


Question 15.
Which kind of rocks are formed by the active participation of animals and plant secretions?
(a) Siliceous rocks
(b) Sand rocks
(c) Fragmental rocks
(d) Glassy rocks

Answer

Answer: (a) Siliceous rocks.


Question 16.
Which kind of rocks are formed by the compressed and altered vegetable matters containing large amount of carbon?
(a) Peat
(b) Sand rocks
(c) Fragment
(d) Glassy

Answer

Answer: (a) Peat.


Question 17.
What is formed by the deposition from concentrated solution of brines?
(a) Salts
(b) Peat
(c) Limestone
(d) Sand

Answer

Answer: (a) Salts.


Question 18.
Name the type of rocks in which original grains get rearranged into more or less perfect bands or layers.
(a) Salts
(b) Foliated
(c) Calcareous
(d) Granite

Answer

Answer: (b) Foliated.


Question 19.
Which one is the example of salt rock?
(a) Halite
(b) Gypsum
(c) Potash
(d) all of them

Answer

Answer: (d) all of them.


Question 20.
When rocks are forced down to lower levels by tectonic processes, the process is known as
(a) Sedimentation
(b) Metamorphism
(c) none of them
(d) both of them

Answer

Answer: (b) Metamorphism.


Question 21.
Metamorphic rocks are classified in…………. major groups.
(a) two
(b) three
(c) five
(d) six

Answer

Answer: (a) two.


Question 22.
Which group belongs to metamorphic rocks?
(fl) Foliated
(b) Non-foliated
(c) both of them
(d) none of them

Answer

Answer: (c) both of them.


Question 23.
Salts and phyllites are……………. rocks.
(a) Foliated
(b) Non-foliated
(c) none of them
(d) both of them

Answer

Answer: (a) Foliated.


Question 24.
Which one is the example of Non-foliated rocks?
(a) Marble
(b) Schists
(c) Salts
(d) Phyllites

Answer

Answer: (a) Marble.


Question 25.
Serpentine is a type of rocks.
(a) Foliated
(b) Non-foliated
(c) Salts
(d) Aphantic

Answer

Answer: (b) Non-foliated.


Question 26.
The process through which the rocks are transformed into new ones is known as?
(a) Rock cycle
(b) Metamorphism
(c) Sedimentation
(d) none of them

Answer

Answer: (a) Rock cycle.


II. Fill up the blanks with suitable words

Question 1.
India is the first among the world countries which produce …………….

Answer

Answer: mica


Question 2.
Main poducers of mica are …………, …………….. and Rajasthan.

Answer

Answer: Bihar, Andhra Pradesh


Question 3.
…………… is used in fertiliser, cement and sulphuric acid industries.

Answer

Answer: Gypsum


Question 4.
The basic source of all minerals is the ……………. in the interior of the earth.

Answer

Answer: hot magma


Question 5.
Aluminium, calcium, silica, iron, magnesium are the major elements of ……………..

Answer

Answer: amphiboles


Question 6.
………….., ……………. and …………….. are examples of non metals.

Answer

Answer: Sulphur, phosphates, nitrates


Question 7.
………….. solidified from magma and lava.

Answer

Answer: Igneous rocks


Question 8.
Granetoid or phaneretic rocks are ……………. in origin.

Answer

Answer: plutonic


Question 9.
Fragmental are mainly ……………. rocks.

Answer

Answer: extrusive


Question 10.
………….. is basically composed of remains of micro-organisms of …………….

Answer

Answer: Chalk, foraminera


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