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Liquids and Solids - 8
1.
In liquids intermolecular forces are.
a) Very weak
b) Negligible
c) Very strong
d) Reasonably strong
2.
Values of Heat of vaporization for liquids with strong dipole-dipole forces will be.
a) Very low
b) Very high
c) Negligible
d) Reasonably high
3.
Instantaneous dipole-induced dipole force is also called.
a) London dispersions forces
b) Debye force
c) Van der Waal’s forces
d) Hydrogen bonding
4.
Down the group polarizability generally.
a) Remains constant
b) Increases
c) donot follow a regular trend.
d) decreases
5.
Trend of boiling point of halogens from fluorine to iodine is that it.
a) Remain constant
b) Decreases
c) Negligible.
d) increases
6.
Molecules of hydrocarbons with large chain lengths experience.
a) Repulsive forces
b) stronger attractive force
c) No attractive force.
d) weaker attractive forces
7.
Hydrocarbons, which generally have high molecular masses, exist in
a) Vapour form
b) Solid form
c) gaseous form
d) liquid form
8.
Exceptionally low acidic strength of HF is due to
a) smaller size of fluorine
b) Strong polar bond b/w H&F
c) Strong hydrogen bonding
d) Electro negativity of fluorine.
9.
Long chains of Amino acids are coiled about one another into a spiral by.
a) Hydrogen bonds
b) Ionic bonds
c) Van der waal’s forces.
d) Covalent bond
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