CBSE Class 7 Social Science Geography Inside our Earth MCQs

Question. Where is the deepest mine in the world located?
(a) South America
(b) South Africa
(c) South India
(d) South Australia

Answer : B

Question. The Taj Mahal is made of
(a) White marble
(b) Black marble
(c) Red marble
(d) Yellow marble

Answer : A

Question. Sandstone is made from
(a) Grains of soil
(b) Grains of plants
(c) Grains of water
(d) Grains of sand

Answer : D

Question. Fossils are the remains of dead _
(a) Plants
(b) Animals
(c) Both a and b
(d) None of the above

Answer : C

Question. Any natural mass of mineral matter that makes up the earth’s crust is called a
(a) rock
(b) road
(c) sediment
(d) none of these

Answer : A

Question. Rocks which contain fossils are called
(a) metamorphic rocks
(b) igneous rocks
(c) core
(d) sedimentary rocks

Answer : D

Question. The depth of the deepest mine in South Africa is
(a) one km
(b) two km
(c) three km
(d) four km

Answer : D

Question. The upper most layer of the earth’s surface is called
(a) the crustcorrect
(b) the brust
(c) the roads
(d) the forest

Answer : A

Question. The molten magma cools down deep inside the earth’s crust. Solid rocks so formed are called
(a) Intrusive Sedimentary rocks
(b) Intrusive Metamorphic rocks
(c) Extrusive igneous rocks
(d) Intrusive igneous rocks

Answer : D

Question. Depth of mantle layer of the earth is:
(a) 2900 km
(b) 3000 km
(c) 3100km
(d) 3200 km

Answer : A

Question. In search for oil engineers have dug a hole about:
(a) 3 km
(b) 4 km
(c) 5 km
(d) 6 km

Answer : D

Question. Thinnest layer of the earth is
(a) Crust
(b) Nife
(c) Core
(d) Mantle

Answer : A

Question. What is the percentage of the volume of the earth?
(a) 1
(b) 15
(c) 89
(d) 20

Answer : A

Question. What is meaning of igneous?
(a) Air
(b) Water
(c) Lime
(d) Fire

Answer : D

Question. Igneous and sedimentary rocks can change into:
(a) Intrusive igneous rocks
(b) Extrusive igneous rocks
(c) Metamorphic rocks
(d) Igneous rocks

Answer : C

Question. What are the layers of the earth?
(a) Crust
(b) Mantle
(c) Core
(d) All of the above

Answer : D

Question. Which rocks are known as primary rocks?
(a) Igneous rocks
(b) Sedimentary rocks
(c) Metamorphic rocks
(d) None of these

Answer : A

Question. When magma from deep below forces its way up to earths surface, it is called
(a) Sand
(b) Marble
(c) Sediments
(d) Volcano

Answer : D

Question. The lightest of the materials are concentrated in this layer
(a) Crust
(b) Mantle
(c) Inner Core
(d) Outer Core

Answer : A

Question. The molten magma cools down deep inside the earth's crust. Solid rocks so formed are called
(a) Intrusive Sedimentary rocks
(b) Intrusive Metamorphic rocks
(c) Extrusive igneous rocks
(d) Intrusive igneous rocks

Answer : D

Question. ______ minerals are found in the continental masses
(a) Silica and alumina
(b) Siica and magnesium
(c) Nickel and iron
(d) Silica and iron

Answer : A

Question. There are three major types of rocks except
(a) Metamorphic rocks
(b) Sedimentary rocks
(c) Igneous rocks
(d) Mantle rocks

Answer : D

Question. What is the name of the rock which contains fossils?
(a) Seimentary rocks
(b) Metamorphic rocks
(c) Igneous rocks
(d) Core

Answer : A

Question. The remains of the dead plants and animals trapped in the layers of rocks are called
(a) Rocks
(b) Conventional
(c) Fossils
(d) Minerals

Answer : C

Question. The common mineral in the continental masses and the oceanic crust is _____
(a) Silicon
(b) Magnesium
(c) Aluminium
(d) Iron

Answer : A

Question. The main mineral constituents of the continental mass are
(a) Silica and alcohol
(b) Silver and alcohol
(c) Silver and alumina
(d) Silica and alumina

Answer : D

Question. Which layer is having a radius of about 3500 km?
(a) Sial
(b) Crust
(c) Core
(d) Mantle

Answer : C

Question. Igneous rocks are called primary rocks because:
(а) All the other rocks are formed from the igneous rocks.
(b) These are important for human beings.
(c) These rocks produce all the ailments.
(d) None of the above.

Answer : A

Question. What happens when igneous and sedimentary rocks go under heat and pressure
(a) They change into graphite
(b) They change into fossils
(c) They change into metamorphic rocks
(d) They change into minerals

Answer : C

Question. Rocks roll down, crack, and hit each other and are broken down into small fragments. These smaller particles are called
(a) Sediments
(b) Sand
(c) Piece
(d) Units

Answer : A