Matter Test

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Matter Test - 1

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Weekly Quiz Competition

Question 1
1 / -0

Water can be turned into ice by

A
exposing it to heat

B
stirring it vigorously

C
adding common salt to it

D
reducing its temperature

Solution

Reducing the temperature of water, till it gets reduced to 0ºC, causes it to crystallize leading to the formation of ice.
Question 2
1 / -0

In which of the following substances is the speed of molecules the highest?

A
Ice

B
Kerosene

C
Sugar cube

D
Water vapor

Solution

As the thermal energy is added to a solid it changes to a liquid and then to a gas.

Among the given substances only water vapor is present in gaseous state. Hence, speed of molecules will be the maximum in the water vapor.

The correct answer is D.

Why alternatives A and C are wrong:

Ice and sugar cube are solid substances. The speed of molecules in solids is lesser than the speed of molecules in liquids and gases.

Why alternative B is wrong:

Kerosene is a liquid. The speed of molecules in liquids is lesser than the speed of molecules in gases.
Question 3
1 / -0

Which of the following substances has the most loosely held constituent particles?

A
Mercury

B
Sponge

C
Bread

D
Steel

Solution

Among the given alternatives, mercury is the only substance which is a liquid. In liquids, particles are loosely held as compared to particles in solids.
Question 4
1 / -0

Use the following information to answer the next question.

When a liquid is transferred from a round container to a cubical container, the liquid takes the shape of the latter. However, when a piece of wood is transferred from a round container to a cubical container, its shape remains the same.

Which of the following conclusions drawn from the given observation is incorrect?

A
Unlike solids, liquids take the shape of the container they are put in

B
Liquids can flow easily and solids do not flow at all

C
Unlike solids, liquids have a definite shape

D
Liquids and solids have a fixed volume

Solution

The intermolecular force of attraction is very strong in solids. In liquids, the intermolecular force is quite weak. Therefore, the constituting particles in solids are very closely packed, while those in liquids are loosely packed. Hence, solids have a definite shape but liquids do not.
Question 5
1 / -0

Which of the following statements is false regarding properties of solids and liquids?

A
Both occupy space

B
Both have definite shape

C
Both have definite volume

D
Both are visible with naked eye

Solution

Solids (mostly) have definite shape but liquids do not have definite shape. Liquids take the shape of the container in which they are kept. Hence, the statement contained in alternative B is false regarding properties of solids and liquids.
Question 6
1 / -0

Use the following information to answer the next question.

The rate of diffusion is the___I___ in the case of gases because their intermolecular interaction is the___II___.

The given statement is completed by the information given in alternative

A

I II

slowest minimum

B

I II

slowest maximum

C

I II

fastest minimum

D

I II

fastest maximum

Solution

The presence of large intermolecular spaces in gases decreases intermolecular attraction. This increases the rate of diffusion in gases as compared to solids and liquids.
Question 7
1 / -0

The water vapours present in the atmosphere form clouds by the process of

A
condensation

B
evaporation

C
freezing

D
Melting

Solution

Condensation is the process in which a gaseous substance changes into its liquid or solid state. Condensation of water vapour takes place when the temperature is low. The water vapours present in the atmosphere condense to form clouds.
Question 8
1 / -0

If normal ice had been kept in place of the dry ice, and the mixture had been exposed to room temperature for a few minutes, then it would result in the

A
melting of ice

B
sublimation of ice

C
dissolution of the marble powder

D
heating up of the mixture

Solution

Normal ice is crystallized form of water and melts at room temperature whereas dry ice is solidified carbon dioxide which sublimates directly to the vapor state from the solid state.
Question 9
1 / -0

What is the freezing point of pure water?

A
−10°C

B
−5°C

C
0°C

D
5°C

Solution

The freezing point of pure water is 0°C.

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Matter Test - 1

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Matter Test - 1

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SHARING IS CARING

Question 1

exposing it to heat

stirring it vigorously

adding common salt to it

reducing its temperature

Solution

Question 2

Ice

Kerosene

Sugar cube

Water vapor

Solution

Question 3

Mercury

Sponge

Bread

Steel

Solution

Question 4

Unlike solids, liquids take the shape of the container they are put in

Liquids can flow easily and solids do not flow at all

Unlike solids, liquids have a definite shape

Liquids and solids have a fixed volume

Solution

Question 5

Both occupy space

Both have definite shape

Both have definite volume

Both are visible with naked eye

Solution

Question 6

I II slowest minimum

I II slowest maximum

I II fastest minimum

I II fastest maximum

Solution

Question 7

condensation

evaporation

freezing

Melting

Solution

Question 8

melting of ice

sublimation of ice

dissolution of the marble powder

heating up of the mixture

Solution

Question 9

−10°C

−5°C

0°C

5°C

Solution

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I II

slowest minimum

I II

slowest maximum

I II

fastest minimum

I II

fastest maximum