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Worksheets9TH-C-ZMZR-CHAP 1- AS ON 10.06.2024
Total questions: 23
Worksheet time: 12mins
The substance having the maximum tendency to flow is
water
sodium
sodium chloride
chlorine
The inter-particle force are the strongest in
hydrogen
methyl alcohol
water
sodium chloride
Which word describes the following change? ?I2(s)⟶I2(g)
Boiling
Condensation
Evaporation
Sublimation
Alcohol exists as a liquid at room temperature because
the intermolecular forces are strong enough to keep its particles bound to each other
its melting point is below room temperature
it is highly compressible
both (a) and (b)
The value of latent heat of vaporisation of water kcal/ kg is
80
540
334
225
The quantity of matter present in an object is called its
weight
gram
mass
density
Which of the following has highest kinetic energy?
Particles of ice at 0℃
Particles of water at 0℃
Particles of water at 100℃
Particles of steam at 100℃
Whose particles have the intermediate kinetic energy?
Liquid
Gases
Solids
None of these
_____ have the strongest intermolecular force of attraction in between the particles.
Solid
Liquids
Gases
None of these
Large volume of Compressed Natural Gas (CNG) is available in small cylinders to us due to its property of
high inflammability
easy availability
high compressibility
low density
Which of the following decreases the rate of evaporation?
Surface area
Humidity
Temperature
Wind
Evaporation of a material takes place
above its boiling point
above its melting point
below its boiling point
below its melting point
Which of the following statements does not go with the liquid state?
Particles are loosely packed in the liquid state.
Fluidity is maximum in the liquid state.
Liquids cannot be compressed much.
Liquids take up the shape of any container in which they are placed.
Which of the following is not correct regarding gases?
Gases exert pressure.
Gases have large intermolecular spaces.
Gases have weak tendency to diffuse.
Gases have weak intermolecular forces of attraction.
A liquid is kept in a China dish. The evaporation of the liquid can be accelerated
by keeping the dish in the open
by blowing air into the liquid
by keeping the dish under a running fan
all of these
A gas can be best liquefied
by increasing the temperature
by lowering the pressure
by increasing the pressure and reducing the temperature
none of these
Ice floats on the surface of water because:
it is heavier than water
the density of both water and ice is the same
ice is lighter than water
none of these
Which of the following describes the liquid phase?
It has a definite shape and a definite volume.
It has a definite shape but not definite volume.
It has a definite volume but not a definite shape.
It has neither a definite shape nor a definite volume.
Which of the following states has the least energetic molecules?
Solids
Liquids
Gases
Plasmas
450 K temperature may be written in Celsius scale as
278℃
450℃
0℃
177℃
When liquid starts boiling, further heat energy which is supplied
is lost to the surroundings as much
increases the temperature of the liquid
increases the kinetic energy of the particles in the liquid
is absorbed as latent heat of vaporisation by the liquid.
The quantity of matter present in an object is called its
(a) weight (b) gram (c) mass (d) density
(a) weight
(b) gram
(c) mass
(d) density
The inter-particle force are the strongest in
(a) hydrogen (b) methyl alcohol
(c) water (d) sodium chloride
(a) hydrogen
(b) methyl alcohol
(c) water
(d) sodium chloride
