States of Matter Test

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States of Matter Test - 2

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Weekly Quiz Competition

Question 1
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Which of the following has the strongest intermolecular forces of attraction?

A
Bromine

B
Air

C
Copper

D
Oxygen

Solution

Copper is a metal and the atoms are held together in a strong metallic bond.
Question 2
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Why is it difficult to break an iron nail?

A
Because of strong force of attraction

B
Because of high kinetic energy

C
Because of high mechanical energy

D
Because of indivisibility of its particles

Solution

Iron has a strong force of attraction which makes it a strong solid. Due to this strong force of attraction, the particles hold each other tightly and hence, the bond is not easy to break.
Question 3
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Why is sponge compressible although it is a solid?

A
Because the bonds between the particles can be easily broken

B
Because it has minute holes in which air is trapped

C
Because its particles have weak force of attraction

D
Because particles have high kinetic energies

Solution

Sponge is compressible although it is a solid because it has minute holes in which air is trapped.
Question 4
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Why does an electric bulb, on prolonged use, form a black coating on its inner surface?

A
Because of melting of tungsten

B
Because of sublimation of tungsten

C
Because of oxidation of tungsten

D
Because of reduction of tungsten

Solution

An electric bulb on long use forms a black coating on its inner surface because of sublimation of tungsten.
Question 5
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Which of the following does not undergo sublimation?

A
Ammonium chloride

B
Sodium chloride

C
Iodine

D
Naphthalene

Solution

Sublimation is the transition of a substance directly from solid to gas phase without passing through the intermediate liquid phase, e.g. ammonium chloride, iodine and naphthalene. Sodium chloride will not show sublimation.
Question 6
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Which of the following expands on heating?

A
Ice

B
Copper

C
Cast iron

D
None of the above

Solution

Copper metal expands on heating.
Question 7
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What is the value of latent heat of vapourisation of steam?

A
360 cal per gram

B
980 cal per gram

C
420 cal per gram

D
540 cal per gram

Solution

The value of latent heat of vapourisation of steam is 540 cal per gram.
Question 8
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What is the value of latent heat of fusion of ice?

A
30 cal per gram

B
100 cal per gram

C
80 cal per gram

D
50 cal per gram

Solution

The value of latent heat of fusion of ice is 80 cal per gram.
Question 9
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Why does steam cause more severe burns than boiling water?

A
Because of latent heat of fusion

B
Because of latent hat of sublimation

C
Because of latent heat of vapourisation

D
Because of latent heat of conversion

Solution

Steam causes more severe burns than boiling water because of latent heat of vapourisation.
Question 10
1 / -0

Which of the following is responsible for the cooling of water kept in an earthen pitcher during summer days?

A
Condensation

B
Evaporation

C
Freezing

D
Fusion

Solution

An earthen pitcher has large number of extremely small pores (or holes) in its walls. Some of the water continuously keeps seeping through these pores to the outside of the pitcher. This water evaporates continuously and takes the latent heat required for vapourisation from the earthen pitcher and the remaining water. In this way, the remaining water loses heat and gets cooled. This is also an example of cooling caused by evaporation.
Question 11
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Which of the following parameters determine(s) the physical state of matter?

a. Temperature
b. Pressure
c. Density

A
a, b and c

B
a and b

C
a and c

D
b and c

E
b only

Solution

Temperature and pressure are the parameters that affect the physical state of matter in all its forms.
Question 12
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On a given day, clothes take longer to dry in Chennai, which is on the sea coast, than in Delhi although both cities show the same temperature. This is because

A
humidity is higher in Delhi

B
humidity is higher in Chennai

C
although the temperature is the same, Delhi has higher latent heat of vapourisation

D
water from wet clothes changes quickly into water vapour when humidity is high, so clothes dry faster in Delhi

E
wind velocity is more in Delhi at the same temperature as compared to Chennai

Solution

The higher the humidity, the slower the rate of evaporation, and the slower the rate of drying. Chennai being on the coast will have higher humidity as compared to Delhi.
Question 13
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Which of the following statements is/are false?

a. The force of attraction is minimum in the particles of solid matter and maximum in the particles of gaseous matter.
b. The pressure exerted by the gas on the walls of its container is due to the collision of the fast moving gas particles against the walls of the container.
c. A sponge is considered to be a solid because its compressibility is due to the presence of minute pores in it, which are filled with air.

A
Only a

B
Both a and b

C
Only b

D
Both b and c

E
Only c

Solution

The force of attraction is maximum in the particles of solid matter and minimum in the particles of gaseous matter.
Question 14
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Which of the following statements is not correct?

A
Gases have higher kinetic energy than liquids and solids.

B
Particles of solids have the least spaces in between them, but those of gases have the largest spaces between them.

C
Liquids have a higher diffusion rate than gases.

D
Liquids have fixed volume, but no fixed shape.

Solution

Particles of gases have higher kinetic energies and hence, higher diffusion rates as compared to the particles present in the liquid state.
Question 15
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While boiling a liquid, Siya noticed that the temperature remains constant during the change of state. What is the possible reason for this?

A
The extra heat is used to overcome the attractive forces among the particles.

B
The extra energy is used by the container.

C
The extra energy is lost to the atmosphere.

D
The extra energy is used to decrease the kinetic energy of the particles.

Solution

For any substance, the temperature remains constant during the change of state as the extra heat is absorbed by the particles to overcome the attractive forces between them.

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Re-Attempt Weekly Quiz Competition

States of Matter Test - 2

Result

States of Matter Test - 2

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SHARING IS CARING

Question 1

Bromine

Air

Copper

Oxygen

Solution

Question 2

Because of strong force of attraction

Because of high kinetic energy

Because of high mechanical energy

Because of indivisibility of its particles

Solution

Question 3

Because the bonds between the particles can be easily broken

Because it has minute holes in which air is trapped

Because its particles have weak force of attraction

Because particles have high kinetic energies

Solution

Question 4

Because of melting of tungsten

Because of sublimation of tungsten

Because of oxidation of tungsten

Because of reduction of tungsten

Solution

Question 5

Ammonium chloride

Sodium chloride

Iodine

Naphthalene

Solution

Question 6

Ice

Copper

Cast iron

None of the above

Solution

Question 7

360 cal per gram

980 cal per gram

420 cal per gram

540 cal per gram

Solution

Question 8

30 cal per gram

100 cal per gram

80 cal per gram

50 cal per gram

Solution

Question 9

Because of latent heat of fusion

Because of latent hat of sublimation

Because of latent heat of vapourisation

Because of latent heat of conversion

Solution

Question 10

Condensation

Evaporation

Freezing

Fusion

Solution

Question 11

a, b and c

a and b

a and c

b and c

b only

Solution

Question 12

humidity is higher in Delhi

humidity is higher in Chennai

although the temperature is the same, Delhi has higher latent heat of vapourisation

water from wet clothes changes quickly into water vapour when humidity is high, so clothes dry faster in Delhi