Matter in Our Surrounding Test

Result

Matter in Our Surrounding Test - 31

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Weekly Quiz Competition

Question 1
1 / -0

During the evaporation process, the heat is:

A
Absorbed

B
Evolved

C
First absorbed then evolved

D
Initially evolved and then absorbed

Solution

Evaporation takes place when the particles present in the liquid surface acquire more kinetic energy by absorbing heat from the surroundings.
These particles escape from the force of attraction of other particles and get converted into the vapour phase.
Question 2
1 / -0

Evaporation is a

A
surface phenomenon

B
bulk phenomenon

C
both surface and the bulk phenomenon

D
none of A or B

Solution

Evaporation is the phenomenon of the change of a liquid into a vapour phase at temperatures below its boiling point.
A small fraction of the particles present in the liquid surface, having higher kinetic energy, break away from the force of attraction between other liquid particles to become vapour.
Since only surface particles contribute to evaporation, it is a $$\textbf{Surface phenomenon}$$.
Question 3
1 / -0

Pick the change that can be reversed from the following

A
Cutting of trees

B
Melting of ghee

C
Burning of candle

D
Blooming of flower

Solution

Ghee can be frozen again from its molten state. Therefore, it is a reversible process (in winters it gets frozen on its own, even in the container).
Question 4
1 / -0

A kind of matter which can sublime is:

A
water

B
plastic

C
milk

D
iodine

Solution

When a substance is sublime, it actually gets converted from solid to a gaseous state without passing through the liquid state.

The substances which undergo sublimation are camphor, Iodine. Water, plastic, and milk cannot undergo sublimation.

Hence option D is correct.
Question 5
1 / -0

Solids are:

A
more dense

B
less dense

C
least dense

D
highly compressible

Solution

Molecule distance in solid is very small in comparison to gas and liquid. So it is denser than Liquid and Gas.
Option A is correct.
Question 6
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The molecules:

A
in solid, liquid and gas move freely anywhere.

B
in a solid move freely within its boundary.

C
in a liquid move within its boundary.

D
in a gas move only within its boundary.

Solution

In solids, the molecules are tightly packed and they cannot move freely. Therefore, options (A) and (B) are incorrect.
In gas, the molecules can move freely anywhere and do not have any fixed boundary. Therefore, option (D) is incorrect.
In liquids, the molecules can move freely but only within its boundary. Option (C) is correct.
Question 7
1 / -0

The state of matter which has no definite shape or volume is called

A
solid

B
liquid

C
gas

D
water

Solution

Gases do not have definite shape or volume, liquids have definite volume but no definite shape and solids have definite shape and volume.
So correct option is C.
Question 8
1 / -0

Identify the correct statement about gases:

A
Gases can not be compressed easily.

B
Gases occupy the entire space of the container.

C
Gases have definite shapes.

D
Gases can not flow.

Solution

Gases can be easily compressed with pressure and they do not have a definite shape or size. Also, they can easily flow. Hence, when do we fill a container with some gas it will occupy the entire space of the container.
Therefore, the correct option is B.
Question 9
1 / -0

All kinds of matter

A
occupy space and have definite mass

B
have mass and definite shape

C
can change their states

D
have definite volume

Solution

Matter is defined as something which occupies space and have definite mass.
Hence Option $$A$$ is correct.
Question 10
1 / -0

A substance which can not sublime is:

A
iodine

B
camphor

C
sugar

D
dry ice

Solution

Sublimation is the process in which a solid directly changes into a gaseous phase without converting it into liquid.

A substance that can not sublime among the given options is sugar.

Iodine, camphor, and dry ice are sublimable.

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Re-Attempt Weekly Quiz Competition

Matter in Our Surrounding Test - 31

Result

Matter in Our Surrounding Test - 31

Score

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Rank

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SHARING IS CARING

Question 1

Absorbed

Evolved

First absorbed then evolved

Initially evolved and then absorbed

Solution

Question 2

surface phenomenon

bulk phenomenon

both surface and the bulk phenomenon

none of A or B

Solution

Question 3

Cutting of trees

Melting of ghee

Burning of candle

Blooming of flower

Solution

Question 4

water

plastic

milk

iodine

Solution

Question 5

more dense

less dense

least dense

highly compressible

Solution

Question 6

in solid, liquid and gas move freely anywhere.

in a solid move freely within its boundary.

in a liquid move within its boundary.

in a gas move only within its boundary.

Solution

Question 7

solid

liquid

gas

water

Solution

Question 8

Gases can not be compressed easily.

Gases occupy the entire space of the container.

Gases have definite shapes.

Gases can not flow.

Solution

Question 9

occupy space and have definite mass

have mass and definite shape

can change their states

have definite volume

Solution

Question 10

iodine

camphor

sugar

dry ice

Solution

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