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Chemistry - 9 Chapter - 7
Solution and Suspension
Test - 10
1.
An insoluble solute is present in a supersaturated solution.
a) False
b) True
2.
Polar solvents dissolve only polar solutes
a) False
b) True
3.
Why hydrocarbons such as petrol, sui gas, grease and benzene etc do not dissolve in water?
a) Water is a polar compound and these hydrocarbons are not polar compounds. So these do not dissolve in water.
b) Water is an ionic compound and these hydrocarbons are not polar compounds. So these do not dissolve in water.
4.
Which one is in soluble in water?
a) Kerosene oil
b) methanol (CH
3
OH)
c) Chloroform
5.
Is it possible to make a saturated solution of alcohol and water?
a) If solute and solvent are present in same physical state, their saturate solution cannot be prepared. Alcohol and water are liquids. So their saturated solution cannot be prepared.
b) If solute and solvent are present in different physical state, their saturate solution cannot be prepared. Alcohol and water are liquids. So their saturated solution cannot be prepared.
6.
Is dissolution of hydrogen chloride gas in water a physical change or a chemical reaction?
a) Dissolution of hydrogen chloride gas in water is a physical process. It is represented by following chemical equation. HCL + H
2
O --> H
3
O+ C-.
b) Dissolution of hydrogen chloride gas in water is a physical process.Dissolution of hydrogen chloride gas in water is a physical process. It is represented by following chemical equation. HCL + H2O --> H3O+ CL-.
7.
Dilute solution contains small amount of solute but concentrated solution contains access amount of salute as compared to solvent.
a) False
b) True
8.
Water is which type of solution?
a) Dilute
b) Ionic
c) Polar
d) Gas-in-gas
9.
Air is which type of solution?
a) Dilute
b) Gas-in-gas
c) Collidal
d) Polar
10.
Which type of solution the fog is:
a) Collidal
b) Liquid-in-gas
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