Study of Gas Law Test

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Study of Gas Law Test - 1

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Weekly Quiz Competition

Question 1
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Why does a gas have no definite shape and volume?

A
It is because gas molecules have high kinetic energy.

B
It is because gas molecules have random motion.

C
It is because gas molecules have negligible force of attraction.

D
It is because gas molecules vibrate along a mean position.
Question 2
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Which of the following is in accordance with Boyle's law for a given mass of dry gas at constant temperature?

A
If the pressure is halved, the volume is reduced to one-third of the original.

B
If the pressure is tripled, the volume is reduced to one-third of the original.

C
If the pressure is doubled, the volume is reduced to one-fourth of the original.

D
If the pressure is reduced to one-third, the volume is doubled.
Question 3
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What is the effect of heating on pressure of gas in a container?

A
It increases.

B
It decreases.

C
It remains constant.

D
It depends on the type of gas.
Question 4
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Large volume of compressed natural gas (CNG) can be put into small cylinders and transported. What makes this possible?

A
High compressibility of gases

B
Low compressibility of gases

C
High kinetic energy of gas molecules

D
High density of gases
Question 5
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Two cylinders containing carbon dioxide are connected together by a tube fitted with a tap. The capacity of one cylinder is 3 dm³ and that of the other cylinder is 2 dm³; the pressure of the first cylinder is 550 mm Hg and that of the second cylinder is 800 mm Hg. What will be the final pressure in the cylinders on opening the tap? (Temperature remains constant.)

A
330 mm Hg

B
320 mm Hg

C
650 mm Hg

D
450 mm Hg
Question 6
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A gas occupies 800 cm³ under a pressure of 760 mm Hg. Under what pressure will the volume of the gas be reduced by 20% of its original volume? (Temperature remains constant.)

A
3800 mm Hg

B
950 mm Hg

C
980 mm Hg

D
1900 mm Hg
Question 7
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What is true about gases according to kinetic theory?

A
They have high density and compressibility.

B
They have low density and compressibility.

C
They have high density and low compressibility.

D
They have low density and high compressibility.
Question 8
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According to kinetic theory, what is true about collision between gas molecules and with the container, respectively?

A
They are perfectly inelastic; and impart momentum to container wall.

B
They are perfectly elastic; and impart momentum to container wall.

C
They are perfectly inelastic; and do not impart momentum to container wall.

D
They are perfectly elastic, and do not impart momentum to container wall.

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Study of Gas Law Test - 1

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Study of Gas Law Test - 1

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SHARING IS CARING

Question 1

It is because gas molecules have high kinetic energy.

It is because gas molecules have random motion.

It is because gas molecules have negligible force of attraction.

It is because gas molecules vibrate along a mean position.

Question 2

If the pressure is halved, the volume is reduced to one-third of the original.

If the pressure is tripled, the volume is reduced to one-third of the original.

If the pressure is doubled, the volume is reduced to one-fourth of the original.

If the pressure is reduced to one-third, the volume is doubled.

Question 3

It increases.

It decreases.

It remains constant.

It depends on the type of gas.

Question 4

High compressibility of gases

Low compressibility of gases

High kinetic energy of gas molecules

High density of gases

Question 5

330 mm Hg

320 mm Hg

650 mm Hg

450 mm Hg

Question 6

3800 mm Hg

950 mm Hg

980 mm Hg

1900 mm Hg

Question 7

They have high density and compressibility.

They have low density and compressibility.

They have high density and low compressibility.

They have low density and high compressibility.

Question 8

They are perfectly inelastic; and impart momentum to container wall.

They are perfectly elastic; and impart momentum to container wall.

They are perfectly inelastic; and do not impart momentum to container wall.

They are perfectly elastic, and do not impart momentum to container wall.

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