Matter in Our Surrounding Test

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Matter in Our Surrounding Test - 3

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Weekly Quiz Competition

Question 1
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CNG stands for

A
Compressed natural gas

B
Cyclic natural gas

C
Composite natural gas

D
Combined natural gas

Solution

Compressed natural gas is abbreviated as CNG. It is used as a fuel in automobiles.
Question 2
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How does the state of matter change during the fusion process?

A
Liquid changes to gas.

B
Gas changes to solid.

C
Gas changes to liquid.

D
Solid changes to liquid.

Solution

Melting (or fusion) is the process in which a solid changes into a liquid.
Question 3
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During sublimation, there is

A
A change in the chemical properties of the substance.

B
Decrease in the mass of the substance.

C
Increase in the mass of the substance.

D
A change in the physical state of the substance.

Solution

During sublimation, solid state of a substance gets directly converted into gaseous state without passing through a liquid state.
Question 4
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Why does a gas exert pressure on walls of the container?

A
Because particles of gas are static.

B
Because particles of gas hit the walls of the container.

C
Because particles of gas react with each other.

D
Because particles of gas have random motion.

Solution

In gaseous state, the particles move randomly. So, sometimes they hit each other and the walls of the container. The pressure exerted by the gas is because of the force exerted by the gas particles on the walls of the container.
Question 5
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During evaporation, the particles of a liquid evaporate from

A
The surface of the liquid only.

B
Neither from the surface nor from bulk.

C
Bulk of the liquid only.

D
The surface and bulk of liquid.

Solution

Evaporation is a surface phenomenon and its rate increases with increase in surface area.
Question 6
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Plasma is a mixture of:

A
Protons and neutrons.

B
Free electrons only.

C
Free radicals and ions.

D
Free electrons and ions.

Solution

Plasma is a mixture of free electrons and ions.
Question 7
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A wooden table is solid because

A
It is rigid.

B
It has definite shape.

C
It has definite volume.

D
All of the above

Solution

Solids are characterised by definite shape and definite volume. Since the particles are arranged in a compact manner, they are rigid.
Question 8
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We find water droplets on the surface of leaves, especially in the early morning. This is because of:

A
watering of plants the previous night

B
evaporation of water from leaf surface

C
early morning showers

D
condensation of water vapour in the air

Solution

The air around the leaves contains water vapour in it and when these vapours come in contact with the cold surface of leaves, they condense to form tiny droplets of water on the surface of the leaves.
Question 9
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Matter is defined as

A
Anything that has a characteristic smell is matter.

B
Anything that occupies space is a matter.

C
Anything that occupies space and has mass is matter.

D
Anything that has mass is matter.

Solution

Matter is anything that has mass and occupies space. All materials are made up of matter.
Question 10
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Mother had placed some moth balls in the clothes. But the moth balls disappeared after few days. Which property of matter is witnessed in this example?

A
Melting

B
Sublimation

C
Evaporation

D
Liquefaction

Solution

Due to sublimation process, moth balls undergo a direct phase change from solid state to liquid state.

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Re-Attempt Weekly Quiz Competition

Matter in Our Surrounding Test - 3

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Matter in Our Surrounding Test - 3

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SHARING IS CARING

Question 1

Compressed natural gas

Cyclic natural gas

Composite natural gas

Combined natural gas

Solution

Question 2

Liquid changes to gas.

Gas changes to solid.

Gas changes to liquid.

Solid changes to liquid.

Solution

Question 3

A change in the chemical properties of the substance.

Decrease in the mass of the substance.

Increase in the mass of the substance.

A change in the physical state of the substance.

Solution

Question 4

Because particles of gas are static.

Because particles of gas hit the walls of the container.

Because particles of gas react with each other.

Because particles of gas have random motion.

Solution

Question 5

The surface of the liquid only.

Neither from the surface nor from bulk.

Bulk of the liquid only.

The surface and bulk of liquid.

Solution

Question 6

Protons and neutrons.

Free electrons only.

Free radicals and ions.

Free electrons and ions.

Solution

Question 7

It is rigid.

It has definite shape.

It has definite volume.

All of the above

Solution

Question 8

watering of plants the previous night

evaporation of water from leaf surface

early morning showers

condensation of water vapour in the air

Solution

Question 9

Anything that has a characteristic smell is matter.

Anything that occupies space is a matter.

Anything that occupies space and has mass is matter.

Anything that has mass is matter.

Solution

Question 10

Melting

Sublimation

Evaporation

Liquefaction

Solution

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