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WorksheetsMore about Liquid chemistry
Total questions: 24
Worksheet time: 12mins
If we are given butane with boiling point 272.5 k and another butane with boiling point 261.3 k , then which butane has greater london dispersion forces?
1st butane
2nd butane
Neon has smaller size than Xenon, then which of the following has greater london dispersion forces?
Xenon
Neon
First molecule has london dispersion forces and a second molecule has dipole-dipole forces, then which of the following molecule has greater boiling point?
first molecule
second molecule
Stronger the intermolecular forces,.........will be the rate of evaporation.
slower
faster
At dynamic equilibrium,which of the following order is correct regarding rate of evaporation and condensation?
evaporation>condensation
evaporation<condensation
evaporation=condensation
Liquid with stronger intermolecular forces have.........vapour pressure.
low
high
variable
Vapour pressure of liquids ........with temperature.
decreases
increases
variable
If the vapour pressure of water at 250 C is 24 mm Hg, then vapour pressure at 50 0 C is ...........
93 mm Hg
355 mm Hg
760 mm Hg
Vapour pressure of liuid is measured by the ........in mercury level in barometric method.
fall
rise
The vapour pressure of ether is..........at 250 C.
760 mm Hg
537 mm Hg
The difference in mercury height gives the ........in manometric method.
vapou pressure
boiling point
melting pont
At boiling temperature which of the following is correct?
vapour pressure>atmospheric pressure
vapour pressure<atmospheric pressure
vapour pressure=atmospheric pressure
At boiling point , the temperature of liquid remains constant.
True
False
At same atmospheric pressure , the boiling point of two liquids are..........
same
different
Pressure Cooking is an example of .........pressure.
increased
decreased
Vacuum distillation is an example of ...........pressure.
increased
decreased
Glycerine boils at 2900 C under normal atmospheric pressure,but when pressure is ............. the boiling point decreases to 2100 C.
increased
reduced
Polar substances have........value of molar heat of fusion,vapourization and sublimation.
higher
lower
The molecules of liquid at the surface feels an inward net attraction , this is called as .............
surface tension
viscosity
The surface tension of a liquid .........with increase in temperature.
increases
decreases
Liquids like honey,or glycerine have.........viscosities.
high
low
Molten sulphur at 1400C with ring shape is .........viscous than long chained sulphur molecule.
less
more
Viscosity of liquid is taken relative to.........
water
ice
vapours
At liquid crystalline phase,liquid exists between ...........and clearing temperature.
melting temperature
boiling temperature
