Matter in Our Surrounding Test

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Matter in Our Surrounding Test - 15

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Weekly Quiz Competition

Question 1
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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.

The correct answer is A.
Question 2
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Use the following information to answer the next question.

When certain substances are heated, their state changes.

The correct order of change in state of a substance, when heated, is shown in alternative

A
solid → liquid → gas → plasma

B
solid → plasma → liquid → gas

C
solid → liquid → plasma → gas

D
plasma → solid → liquid → gas

Solution

The correct order of change in state of a substance, when heated, is shown in alternative A.

The correct answer is A.
Question 3
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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.
Question 4
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Which of the following statements about gases is true?

A
They have a definite shape and size.

B
They are less compressible than liquids.

C
Their density is more than that of liquids.

D
Their molecules have a little force of attraction.

Solution

The intermolecular force of attraction between the molecules of gases is very little. As a result, gaseous molecules are present far away from each other.

The correct answer is D.
Question 5
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Which is the last discovered state of matter?

A
Gas

B
Solid

C
Plasma

D
Liquid

Solution

Plasma was discovered long after the establishment of the three phases or states of matter, i.e., solid, liquid, and gas. Plasma is a cloud of charged gas and is believed to be completely different from the solid, liquid, or gaseous states of matter.

The correct answer is C.
Question 6
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Which of the following statements about solid, liquid, and gaseous molecules is false?

A
Gaseous molecules have a higher kinetic energy than liquid molecules.

B
Liquid molecules have a higher kinetic energy than solid molecules.

C
Solid molecules move faster than gaseous molecules.

D
Liquid molecules move faster than solid molecules.

Solution

The intermolecular force of attraction is the strongest in solids and the weakest in gases. Solid molecules are arranged very close to each other and cannot leave their respective positions. In fact, the molecules in solids do not move but vibrate in their respective positions. On the other hand, gaseous molecules are very far away from each other and as a result, move faster than both liquid and solid molecules.

The correct answer is C.
Question 7
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Both solids and gases

A
possess well outlined surfaces

B
have definite volume

C
have definite shape

D
occupy space

Solution

Both, solids and gases have volume. Hence, they both have ability to occupy space.

The correct answer is D.
Question 8
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Which of the following statements is true about the molecules in solids and liquids?

A
Solid molecules move faster than liquid molecules.

B
The force of attraction in liquids is stronger than that in solids.

C
Solid molecules have a higher kinetic energy than liquid molecules.

D
Solids have fixed shape while liquids do not have fixed shape.

Solution

The intermolecular force of attraction is very strong in solids as compared to liquids . As a result, solid molecules are packed very close to each other while there is no such type of close packing in liquids. In whichever container the solids are placed, they will acquire a fixed shape while the liquids acquire the shape of the container.

The correct answer is D.

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Re-Attempt Weekly Quiz Competition

Matter in Our Surrounding Test - 15

Result

Matter in Our Surrounding Test - 15

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SHARING IS CARING

Question 1

Mercury

Sponge

Bread

Steel

Solution

Question 2

solid → liquid → gas → plasma

solid → plasma → liquid → gas

solid → liquid → plasma → gas

plasma → solid → liquid → gas

Solution

Question 3

Ice

Kerosene

Sugar cube

Water vapor

Solution

Question 4

They have a definite shape and size.

They are less compressible than liquids.

Their density is more than that of liquids.

Their molecules have a little force of attraction.

Solution

Question 5

Gas

Solid

Plasma

Liquid

Solution

Question 6

Gaseous molecules have a higher kinetic energy than liquid molecules.

Liquid molecules have a higher kinetic energy than solid molecules.

Solid molecules move faster than gaseous molecules.

Liquid molecules move faster than solid molecules.

Solution

Question 7

possess well outlined surfaces

have definite volume

have definite shape

occupy space

Solution

Question 8

Solid molecules move faster than liquid molecules.

The force of attraction in liquids is stronger than that in solids.

Solid molecules have a higher kinetic energy than liquid molecules.

Solids have fixed shape while liquids do not have fixed shape.

Solution

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