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11th CBSE

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In order to increase the volume of a gas by $10 %$ , the pressure of the gas should be

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Important Questions on States of Matter: Gases and Liquids

HARD

11th CBSE

IMPORTANT

Pradeep's Chemistry Vol 1>Chapter 5 - States of Matter: Gases and Liquids>Competition Focus>Q 7

What will be the partial pressures of

He and O_{2}

respectively if

200 ml

He

0.66 atm

pressure and

400 ml

O_{2}

0.52 atm

pressure are mixed in

400 ml

vessel at

20 ° C

HARD

11th CBSE

IMPORTANT

Pradeep's Chemistry Vol 1>Chapter 5 - States of Matter: Gases and Liquids>Competition Focus>Q 8

A bubble of a gas released at the bottom of a lake increases to eight times its original volume when it reaches the surface. Assuming that atmospheric pressure is equivalent to the pressure exerted by a column of water with

10 m

height. The depth of the lake is:

HARD

11th CBSE

IMPORTANT

Pradeep's Chemistry Vol 1>Chapter 5 - States of Matter: Gases and Liquids>Competition Focus>Q 9

A J-shaped tube with smaller end closed and longer end open was taken. Mercury was added into it till the level of mercury in both the limbs was same. Volume of air enclosed in the closed end was found to be

2.4 mL

. Now more mercury was added and the air enclosed in the closed end reduced to

1.9 mL

. Now, the difference in the level of the two limbs will be

HARD

11th CBSE

IMPORTANT

Pradeep's Chemistry Vol 1>Chapter 5 - States of Matter: Gases and Liquids>Competition Focus>Q 10

Some mercury is poured into a capillary tube of uniform bore and one end closed. When the tube is held horizontally, mercury column has a length of

4 cm

and air enclosed in the closed end has a length of

10 cm

. If the tube is now held vertically, with open end upwards, the length of the air column will be (take atmospheric pressure at the place of experiment to be

760 mm

)

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11th CBSE

IMPORTANT

Pradeep's Chemistry Vol 1>Chapter 5 - States of Matter: Gases and Liquids>Competition Focus>Q 11

Two gas bulbs

A

and

B

are connected by a tube having a stopcock. Bulb A has a volume of

100 mL

and contains hydrogen. After opening the gas from

A

to the evacuated bulb

B

, the pressure falls down by

40 %

. The volume (

mL

) of

B

must be

HARD

11th CBSE

IMPORTANT

Pradeep's Chemistry Vol 1>Chapter 5 - States of Matter: Gases and Liquids>Competition Focus>Q 12

Two closed bulbs of equal volume ( $V$ ) containing an ideal gas initially at pressure $P_{i}$ and temperature $T_{1}$ are connected through a narrow tube of negligible volume as shown in the figure below. The temperature of one of the bulbs is then raised to $T_{2}$ . The final pressure $P_{f}$ is

Question Image

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11th CBSE

IMPORTANT

Pradeep's Chemistry Vol 1>Chapter 5 - States of Matter: Gases and Liquids>Competition Focus>Q 13

Containers

A

B

and

C

of equal volume contain oxygen, neon and methane respectively at the same temperature and pressure. The correct increasing order of their masses is

HARD

11th CBSE

IMPORTANT

Pradeep's Chemistry Vol 1>Chapter 5 - States of Matter: Gases and Liquids>Competition Focus>Q 14

Average volume available to a molecule in a sample of a gas at STP is

In order to increase the volume of a gas by 10 %, the pressure of the gas should be

Important Questions on States of Matter: Gases and Liquids

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In order to increase the volume of a gas by $10 %$ , the pressure of the gas should be