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Question-1
Which of the following statement is true?
(A)
The salinity of rivers increase with time.
(B)
The salinity of rivers decrease with time.
(C)
The salinity of seas increase with time.
(D)
The salinity of seas decrease with time.
Question-2
Crystallization of water occurs by:
(A)
Freezing
(B)
Supercooling
(C)
Nucleation and crystal growth
(D)
All the above
Question-3
Water consists of hydrogen and oxygen in the ratio of:
(A)
1:1
(B)
1:2
(C)
2:1
(D)
3:1
Question-4
Water is called the universal solvent because:
(A)
It dissolves in most of the liquids
(B)
It can dissolve most of the substances
(C)
It contains many salts and minerals
(D)
It can exist in three states
Question-5
Out of the total surface area of earth, how much is the land?
(A)
Two thirds
(B)
One thirds
(C)
Two fifths
(D)
One tenths
Question-6
Which of the following is polluted by man or factories?
(A)
Ponds
(B)
Rivers
(C)
Ground water
(D)
All
Question-7
When hydrogen and oxygen combine to form water, they form:
(A)
An unstable compound
(B)
A stable mixture
(C)
An unstable mixture
(D)
An extremely stable compound
Question-8
The main source of water for perennial rivers is in the form of:
(A)
Lakes
(B)
Rain water
(C)
Snow
(D)
Dams
Question-9
Why is water scarcity increasing day by day?
(A)
Water cycle has stopped functioning
(B)
The total amount of water on earth has decreased
(C)
The amount of potable water is decreasing because of over usage
(D)
Due to increasing frequency of floods and droughts
Question-10
The main source of water for inland lakes is:
(A)
Snow
(B)
Sea water
(C)
Ground water
(D)
Rain
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Cambridge Secondary Grade 6
IGCSE
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