S. Chand's ICSE CHEMISTRY Book -1 CLASS- 9>Chapter 8 - Study of Gas Laws>Questions>Q 12

MEDIUM

9th ICSE

IMPORTANT

Earn 100

Define STP or NTP. What are its values? Why is it necessary to compare gases at STP?

Important Questions on Study of Gas Laws

MEDIUM

9th ICSE

IMPORTANT

S. Chand's ICSE CHEMISTRY Book -1 CLASS- 9>Chapter 8 - Study of Gas Laws>Questions>Q 13

A gas collected at a pressure of

95 cm Hg

and a temperature of

50^{o} C

. To what temperature should it be cooled so that it occupies a volume which is

80 %

of its original volume when the pressure of the gas is

90 cm Hg

?

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9th ICSE

IMPORTANT

S. Chand's ICSE CHEMISTRY Book -1 CLASS- 9>Chapter 8 - Study of Gas Laws>Questions>Q 14

88 {cm}^{3}

of nitrogen is at a pressure of

770 mm Hg

. The pressure is then raised to

880 mm Hg

. Find by how much the volume would diminish if the temperature remains constant?

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9th ICSE

IMPORTANT

S. Chand's ICSE CHEMISTRY Book -1 CLASS- 9>Chapter 8 - Study of Gas Laws>Questions>Q 15

At what temperature would

500 {cm}^{3}

of gas measured at

20^{o} C

occupy half its original volume.

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9th ICSE

IMPORTANT

S. Chand's ICSE CHEMISTRY Book -1 CLASS- 9>Chapter 8 - Study of Gas Laws>Questions>Q 16

A fixed volume of a gas occupies

760 {cm}^{3}

at

27^{o} C

and

70 cm Hg

. What will be its volume at STP?

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IMPORTANT

S. Chand's ICSE CHEMISTRY Book -1 CLASS- 9>Chapter 8 - Study of Gas Laws>Questions>Q 17

A steel cylinder of internal volume of

20

litres is filled with hydrogen at

29 atm

pressure. If the hydrogen gas is used to fill a balloon at

1.25 atm

pressure at the same temperature, what volume will the gas occupy ?

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9th ICSE

IMPORTANT

S. Chand's ICSE CHEMISTRY Book -1 CLASS- 9>Chapter 8 - Study of Gas Laws>Questions>Q 18

A cylinder of

20

litre capacity contains a gas at

100 atm

. How many flasks of

200 {cm}^{3}

can be filled from it at

1 atm

, provided the temperature remaining constant ?

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9th ICSE

IMPORTANT

S. Chand's ICSE CHEMISTRY Book -1 CLASS- 9>Chapter 8 - Study of Gas Laws>Questions>Q 19

A gas occupies

3

litres at

0^{o} C

. What volume will it occupy at

- 20^{o} C

the pressure remaining constant?

MEDIUM

9th ICSE

IMPORTANT

S. Chand's ICSE CHEMISTRY Book -1 CLASS- 9>Chapter 8 - Study of Gas Laws>Questions>Q 20

At

0^{o} C

and

760 mm Hg

pressure a gas occupies a volume of

100 {cm}^{3}

. The Kelvin temperature (absolute temperature) of the gas increased by one-fifth while the pressure is increased one and a half times. Calculate the final volume of the gas.