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Chemistry - 9 Chapter - 9
Acids, Bases and Salts
Test - 4
1.
Reversible Reaction is a physical reaction, which takes place in both directions, forward as well as backward.
a) False
b) True
2.
Define Acidity?
a) The acidity of a base is defined as the number of ionizable hydroxyl groups present in its atom
b) The acidity of a base is defined as the number of ionizable hydroxyl groups present in its molecule
3.
Define Basicity? Short..Answer������Remember.by.Heart�����
The basicity of an acid is defined as the number of ionizable hydrogen atoms present in its molecule
a) The basicity of an acid is defined as the number of ionizable hydrogen molecules present in its molecule
b) The basicity of an acid is defined as the number of ionizable hydrogen atoms present in its molecule
4.
What is Neutralization?
a) Acids and bases react together to form salts and water and in this way they neutralize the properties of each other. This reaction is called neutralization reaction
b) Acids and alkalys react together to form salts and water and in this way they neutralize the properties of each other. This reaction is called neutralization reaction
5.
What are Normal Salts?
a) Salts, which neither have replaceable hydrogen atoms nor hydroxyl groups.
b) Salts, which neither have replaceable hydrogen molecules nor hydroxyl groups.
6.
Salts, which neither have neither replaceable hydrogen atoms nor hydroxyl groups are called Acidic Salts.
a) True
b) False
7.
What are Acidic Salts?
a) An acidic salt is obtained when hydrogen atoms present in an acid are partially replaced by metallic atoms.
b) n acidic salt is obtained when hydrogen molecules present in an acid are partially replaced by metallic atoms.
8.
Define Basic Salts? Short..Answer������Remember.by.Heart�����
A basic salt is obtained when the hydroxyl groups present in a acid are partially replaced by some other groups
a) A basic salt is obtained when the hydroxyl groups present in a base are partially replaced by some other groups
b) A basic salt is obtained when the hydroxyl groups present in a acid are partially replaced by some other groups
9.
When two typical salts are crystallized together a double salt is formed. The chemical properties of the crystals of double salt are different form those of the component salts.
a) True
b) False
10.
What is Water of Crystallization?
a) The number of hydrogen molecules present in the crystals of a solid.
b) The number of water molecules present in the crystals of a solid.
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