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Solutions

Solutions

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Question 1
Choose the correct statement with regard to a solution.
A
A solution contains a solute and a solvent which is heterogeneous
B
A solution may contain two or more substances which is homogeneous
C
A true solution is one in which two phases are present
D
A homogeneous mixture of dispersed phase and dispersion medium is known as a true solution
Question 2
Which of the following is a true solution?
A
Milk
B
Salt in carbon di sulphide
C
Blood
D
Sugar solution
Question 3
Choose a wrong statement?
A
The particles of a true solution are not visible even under a powerful ultra microscope
B
The particles of a colloidal solution are visible under ultra microscope
C
The particles of a true solution show Tyndall effect
D
the particles of a colloidal solution show Tyndall effect
Question 4
A given solute has a maximum solubility of 36.5 g in 100g of water. Solution A contains 10g of the solute in 100g of water. Solute B contains 35g in 100g of water. Choose the correct statement.
A
Both are unsaturated solutions
B
Both are saturated solutions
C
Solution A is saturated while solution B is unsaturated
D
Solution A is unsaturated while solution B is saturated
Question 5
The solubility of sodium chloride in water in 36g at 250C. This means that ...........
A
100 g of water can dissolve and 36g of sodium chloride to form an saturated solution at 25oC
B
100 g of water can dissolve only 36g of sodium chloride whatever be the temperature
C
only less than 36g sodium chloride can be dissolved in 100g of water at a given temperature
D
A solution containing 36g of sodium chloride in 100g of water is a super saturated solution
Question 6
Which of the following is a saturated solution?
  1. Nitrogen
  2. Soda water
  3. Given the solubility of sodium chloride in water in 36g at 25oC , solution containing 36g of sodium chloride in 100g of water.
A
1,2 and 3
B
1 and 2
C
1 and 3
D
2 and 3
Question 7
The solubility of copper sulphate in water is 20.7g at 20oC.
  1.    (a) Solution A contains 18g of copper sulphate in 100g of water.
  2.    (b) Solution B contains 20.7g of copper sulphate in 100g of water.
  3.    (c) Solution C contains 10.35g of copper sulphate in 50g of water.
Which of the following is/ are saturated solutions?
A
Solution (a) only
B
Solution (b) only (c)
C
Solution (a) only (c)
D
Solution (c) only
Question 8
The solubility of sodium nitrate at 25oC is 92g. To a saturated solution of sodium            nitrate , 5g of  sodium nitrate is added. Which of the following will happen of  the temperature is raised to 40oC?
A
The solution becomes an unsaturated solution
B
The additional sodium nitrate added remains as such
C
The solubility of sodium nitrate decreases an increasing temperature
D
There is no change in the solubility of sodium nitrate at 40oC
Question 9
Carbon dioxide gas is filled in soft drinks at high pressures. As a result, ............
A
the solubility of carbon dioxide decrease
B
the solubility of carbon dioxide increase
C
the increased pressure does not have any effect on the solubility of carbon dioxide gas
D
the soft drink because sweety to taste
Question 10
Hydrogen chloride (HCl) and water (H2O) are polar compounds. Carbon tetrachloride (CCl4)  is a non polar compound . Hydrogen chloride ................
A
is soluble both in water and carbon tetra chloride
B
is insoluble both in water and carbon tetrachloride
C
is soluble in water only
D
is soluble in carbon tetrachloride only
Question 11
The solubility of a solute A in a given solvent increases with the increase in Temperature. This means that .............
A
When the solute is added to the solvent, the heat is absorbed during dissolution
B
When the solute is added to the solvent, the heat is liberated during dissolution
C
No heat is liberated or absorbed during dissolution
D
The solute may be a exothermic compound
Question 12
Choose the incorrect statement from the following:
A
Colloidal solution consists of two phases in which the dispersed phase is dispersed in a dispersion medium
B
Tyndall effect is shown by a solution in which the size of the particle is greater than that present in a true solution and less than that present in a suspension
C
Brownian motion is observed in a colloidal solution
D
The colloidal particles do not diffuse in a solution
Question 13
The mass of a gas dissolved in a fixed volume of a liquid is directly proportional to the pressure of the gas. This statement is Known as ............
A
Boyles law
B
Raoult’s law
C
Henry’s law
D
gay Lussac law
Question 14
10g of sodium chloride is dissolved in 50g of water. The concentration of  the solution in terms of weight percent is ..............
A
16.6 %
B
50%
C
1.66%
D
25%
Question 15
Which of the following is a true solution?
A
a solution of sugar and water
B
a solution of ethanol and sugar
C
a mixture of mud water
D
milk
Question 16
Colloidal solutions are made up of two phases viz dispersed phase and dispersion medium. In milk, the dispersed phase and dispersion medium are ..............
A
solids
B
liquids
C
gases
D
solid and liquid repellent
Question 17
A heterogeneous mixture in which the dispersion does not occur at all is known as ....................
A
true solution
B
suspension
C
colloid
D
aqueous solution
Question 18
The solubility of copper sulphate in water is 20.7g at 20oC. A solution of copper sulphate containing 10g of copper sulphate in 100g of water is known as .............
A
saturated
B
unsaturated
C
super saturated
D
semi saturated
Question 19
the solubility of sodium nitrate in 92g at 25oC. The solubility may be increased by ..............
A
increasing temperature
B
decreasing temperature
C
adding more sodium nitrate
D
adding more water
Question 20
A solution ‘A’ contains 10g of sugar in water. Another solution ‘B’ contains 20g of sugar in water. Solution B is more ............. than A.
A
diluted
B
concentrated
C
saturated
D
unsaturated
Question 21
In alloys, the solute is a ............... .
A
solid
B
liquid
C
gas
D
water
Question 22
The solvent in smoke is ..................... .
A
solid
B
gas
C
liquid
D
nitrogen
Question 23
An example of a solution in which liquid is the solute and solid as solvent in ................. .
A
smoke
B
milk
C
cloud
D
cheese
Question 24
Brownian movement is observed in ....................... .
A
sugar solution
B
milk
C
bronze
D
He-O2 mixture
Question 25
When sand or clay is added to water, the resulting solution is ................. .
A
true solution
B
colloidal solution
C
suspension
D
non aqueous solution
Question 26
When sunlight passes through the window of the class room, the dust particles scatter the light making the path of the light visible. This phenomenon is called ................. .
A
tyndall effect
B
Brownian motion
C
electro phoresis
D
electro plating
Question 27
In an exothermic process, increase of temperature ............... the solubility
A
increases
B
decreases
C
remains constant
D
neither decreases nor increases
Question 28
The solution which contains alcohol as the solvent is called ................... .
A
aqueous solution
B
non aqueous solution
C
alloys
D
suspension
Question 29
The solubility of sodium nitrate in water is ..........................
A
92g
B
184g
C
95g
D
36g
Question 30
A ................... is a homogenous mixture of two or more substances.
A
true solution
B
colloidal solution
C
suspension
D
mixture of milk powder and water
Question 31
Solute+ ................  solution.
A
suspension
B
colloid
C
solvent
D
salt
Question 32
.................. + Dispersion medium  colloidal solution.
A
sugar salt
B
dispersed phase
C
suspension
D
true solution
Question 33
In cloud, the solute and solvent are ................ .
A
gas and liquid
B
liquid and gas
C
solid and gas
D
gas and solid
Question 34
...................... is opaque in nature.
A
Water
B
True solution
C
Colloids
D
Suspension
Question 35
The size of particles in true solution is .................
A
10 Å to 1000 Å
B
1 Å to 10 Å
C
more than 1000 Å
D
less than 1000 Å
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There are 35 questions to complete.

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