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Solutions
Solutions
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Question 1 |
Choose the correct statement with regard to a solution.
A solution contains a solute and a solvent which is heterogeneous | |
A solution may contain two or more substances which is homogeneous | |
A true solution is one in which two phases are present | |
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?
Milk | |
Salt in carbon di sulphide | |
Blood | |
Sugar solution |
Question 3 |
Choose a wrong statement?
The particles of a true solution are not visible even under a powerful ultra microscope | |
The particles of a colloidal solution are visible under ultra microscope | |
The particles of a true solution show Tyndall effect | |
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.
Both are unsaturated solutions | |
Both are saturated solutions | |
Solution A is saturated while solution B is unsaturated | |
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 ...........
100 g of water can dissolve and 36g of sodium chloride to form an saturated solution at 25oC | |
100 g of water can dissolve only 36g of sodium chloride whatever be the temperature | |
only less than 36g sodium chloride can be dissolved in 100g of water at a given temperature | |
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?
- Nitrogen
- Soda water
- Given the solubility of sodium chloride in water in 36g at 25oC , solution containing 36g of sodium chloride in 100g of water.
1,2 and 3 | |
1 and 2 | |
1 and 3 | |
2 and 3 |
Question 7 |
The solubility of copper sulphate in water is 20.7g at 20oC.
- (a) Solution A contains 18g of copper sulphate in 100g of water.
- (b) Solution B contains 20.7g of copper sulphate in 100g of water.
- (c) Solution C contains 10.35g of copper sulphate in 50g of water.
Solution (a) only | |
Solution (b) only (c) | |
Solution (a) only (c) | |
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?
The solution becomes an unsaturated solution | |
The additional sodium nitrate added remains as such | |
The solubility of sodium nitrate decreases an increasing temperature | |
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, ............
the solubility of carbon dioxide decrease | |
the solubility of carbon dioxide increase | |
the increased pressure does not have any effect on the solubility of carbon dioxide gas | |
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 ................
is soluble both in water and carbon tetra chloride | |
is insoluble both in water and carbon tetrachloride | |
is soluble in water only | |
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 .............
When the solute is added to the solvent, the heat is absorbed during dissolution | |
When the solute is added to the solvent, the heat is liberated during dissolution | |
No heat is liberated or absorbed during dissolution | |
The solute may be a exothermic compound |
Question 12 |
Choose the incorrect statement from the following:
Colloidal solution consists of two phases in which the dispersed phase is dispersed in a dispersion medium | |
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 | |
Brownian motion is observed in a colloidal solution | |
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 ............
Boyles law | |
Raoult’s law | |
Henry’s law | |
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 ..............
16.6 % | |
50% | |
1.66% | |
25% |
Question 15 |
Which of the following is a true solution?
a solution of sugar and water | |
a solution of ethanol and sugar | |
a mixture of mud water | |
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 ..............
solids | |
liquids | |
gases | |
solid and liquid repellent |
Question 17 |
A heterogeneous mixture in which the dispersion does not occur at all is known as ....................
true solution | |
suspension | |
colloid | |
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 .............
saturated | |
unsaturated | |
super saturated | |
semi saturated |
Question 19 |
the solubility of sodium nitrate in 92g at 25oC. The solubility may be increased by ..............
increasing temperature | |
decreasing temperature | |
adding more sodium nitrate | |
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.
diluted | |
concentrated | |
saturated | |
unsaturated |
Question 21 |
In alloys, the solute is a ............... .
solid | |
liquid | |
gas | |
water |
Question 22 |
The solvent in smoke is ..................... .
solid | |
gas | |
liquid | |
nitrogen |
Question 23 |
An example of a solution in which liquid is the solute and solid as solvent in ................. .
smoke | |
milk | |
cloud | |
cheese |
Question 24 |
Brownian movement is observed in ....................... .
sugar solution | |
milk | |
bronze | |
He-O2 mixture |
Question 25 |
When sand or clay is added to water, the resulting solution is ................. .
true solution | |
colloidal solution | |
suspension | |
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 ................. .
tyndall effect | |
Brownian motion | |
electro phoresis | |
electro plating |
Question 27 |
In an exothermic process, increase of temperature ............... the solubility
increases | |
decreases | |
remains constant | |
neither decreases nor increases |
Question 28 |
The solution which contains alcohol as the solvent is called ................... .
aqueous solution | |
non aqueous solution | |
alloys | |
suspension |
Question 29 |
The solubility of sodium nitrate in water is ..........................
92g | |
184g | |
95g | |
36g |
Question 30 |
A ................... is a homogenous mixture of two or more substances.
true solution | |
colloidal solution | |
suspension | |
mixture of milk powder and water |
Question 31 |
Solute+ ................ solution.
suspension | |
colloid | |
solvent | |
salt |
Question 32 |
.................. + Dispersion medium colloidal solution.
sugar salt | |
dispersed phase | |
suspension | |
true solution |
Question 33 |
In cloud, the solute and solvent are ................ .
gas and liquid | |
liquid and gas | |
solid and gas | |
gas and solid |
Question 34 |
...................... is opaque in nature.
Water | |
True solution | |
Colloids | |
Suspension |
Question 35 |
The size of particles in true solution is .................
10 Å to 1000 Å | |
1 Å to 10 Å | |
more than 1000 Å | |
less than 1000 Å |
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There are 35 questions to complete.