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Question-1
What is the main reason for breaking of rocks?
(A)
Chemical changes
(B)
Biological changes
(C)
Salt growth
(D)
Temperature changes
Question-2
Which statement is true?
(A)
Hydrolysis is a process affecting silicate minerals.
(B)
In hydrolysis process rocks are converted into silicates.
(C)
In hydrolysis clay minerals are converted into hydroxide.
(D)
In hydrolysis silicates in the rocks are converted into hydroxide ions.
Question-3
What is Zeugen?
(A)
A strange shaped rock
(B)
Yardang
(C)
A Glacier
(D)
A salt formation
Question-4
Which type of weathering is common in desert regions?
(A)
Frost weathering
(B)
Chemical weathering
(C)
Biological weathering
(D)
Thermal Stress weathering
Question-5
What is the cause of frost wedging of the rocks?
(A)
Chemical
(B)
Oxidation
(C)
Glacier frost
(D)
Frost
Question-6
Why rusting occurs on rocks?
(A)
Due to frosting of rocks
(B)
Due to salt formation
(C)
Due to biological Weathering
(D)
Due to oxidation
Question-7
Of the following which one is fertile formation?
(A)
Zeugen
(B)
Loess
(C)
Barchans
(D)
Yardang
Question-8
What is abrasion of rocks?
(A)
Breaking down of rocks under the impact of flow of water.
(B)
Mechanical grinding of river's traction load against the banks and bed of river.
(C)
Chemical erosion of rocks.
(D)
Oxidation of rocks.
Question-9
What is Haloclasty?
(A)
Salt crystallization on rocks
(B)
It is a type of thermal stress on rocks
(C)
It is a type of biological weathering
(D)
It is type of frost weathering on rocks
Question-10
Choose the odd one
(A)
Mesas
(B)
Buttes
(C)
Ventifacts
(D)
Erratics
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Std 7
Tamil Nadu (English Medium)
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