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Chemistry Class 10 Chapter 11 - Homeostasis - 2
1.
the density of water is maximum at ___ centigrade?
50
0
4
100
2.
water ___ on freezing?
Contracts
Expands
None of these
Both of these
3.
the amount of heat required to raise the temperature of 1.0 gram Of water by 1 degree centigrade is known as?
Melting point
Heat capacity
Heat of vaporization
Boiling point
4.
the amount of heat required to evaporate a small quantity of water Is known as?
Heat of vaporization
Heat capacity
Boiling point
Melting point
5.
water is a ___ conductor of electricity?
Poor
None of these
Non
Good
6.
the spliting of water by means of electricity into hydrogen and Oxygen is known as its?
Heat capacity
Electrolysis
Heat of vaporization
Boiling point
7.
the ratio of hydrogen and oxygen in a water molecule by volume is?
2:1
3:1
1:3
1:2
8.
the ability of water to dissolve a wide variety of substances is due to?
Both of these
Its polarity
None of these
Its ability to form hydrogen bonds
9.
water that easily gives lather with soap and does not form scum is known as?
Light water
Soft water
Heavy water
Hard water
10.
carbonic acid is a?
Weak acid
Strong base
Weak base
Strong acid
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