This page requires a JavaScript-enabled browser
Instructions on how to enable your browser are contained in the help file.
Chemistry - 9 Chapter - 7
Solution and Suspension
Test - 4
1.
What is hydration?
a) It is the process in which water molecules encircle negaitive sodium ion by directing their negative ends and encircle chloride ion by directing their positive ends.
b) It is the process in which water molecules encircle positive sodium ion by directing their negative ends and encircle chloride ion by directing their positive ends.
2.
Why sodium chloride is dissolved in water?
a) Because newly created forces of repultion between water molecules and sodium or chloride ions overpower the electrostatic forces of attraction between these ions in the crystal lattice of sodium chloride.
b) Because newly created forces of attraction between water molecules and sodium or chloride ions overpower the electrostatic forces of attraction between these ions in the crystal lattice of sodium chloride.
3.
Electrostatic forces of attraction are forces of attraction between oppositely charged ions.
a) True
b) False
4.
Define solvated ion?
a) Ions of solute surrounded by solvent molecules in a solution.
b) Ions of solvent surrounded by solute molecules in a solution.
5.
Define hydrated ion?
a) Ions of solute surrounded by water molecules.
b) Ions of solvent surrounded by water molecules.
6.
In the preparation of a solution following are considered as solvents
a) water, chloroform, benzene and sodium
b) water, sodium chloride, acetone and benzene
c) water, chloroform, acetone and benzene
d) water, chloroform, benzene and sodium
7.
Following are considered as solutes:
a) chloroform, sodium and other salts
b) sugar, sodium chloride and other salts
c) all liquids
d) sugar, sodium chloride, benzene and other salts
8.
Generally all solids are solutes and all liquids are solvents.
a) True
b) False
9.
Define saturated solution?
a) A solution, which contains maximum amount of a solute at a particular temperature and which is unable to dissolve further amount of solvent in it.
b) A solution, which contains maximum amount of a solute at a particular temperature and which is unable to dissolve further amount of solute in it.
10.
Define supersaturated solution?
a) A solution, which contains an amount of solute more than that of required for the preparation of a saturated solution at a particular temperature.
b) A solution, which contains an amount of solute more than that of required for the preparation of a saturated solution at any temperature.
This is more feedback!
This is the feedback!
