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What is STP? Give the values of temperature and pressure at STP.

Important Questions on Gaseous State

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Science>Chemistry>Gaseous State>Gas Laws

A certain sample of gas has a volume of

0.2 L

at one atmosphere pressure and

273.15 K

. What is the volume of gas at

273.15 ° C

at same pressure ?

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Science>Chemistry>Gaseous State>Gas Laws

The minimum pressure required to compress

600 {dm}^{3}

of a gas at

1

bar to

150 {dm}^{3}

40 ° C

EASY

Science>Chemistry>Gaseous State>Gas Laws

Which of the following graphs represents Charle's law?

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Science>Chemistry>Gaseous State>Gas Laws

A car tyre is filled with nitrogen gas at

35

psi at

27 ° C

. It will burst if pressure exceeds

40

psi. The temperature in

{}^{\circ}C

at which the car tyre will burst is (Rounded-off to the nearest integer)

EASY

Science>Chemistry>Gaseous State>Gas Laws

Equal masses of

H_{2}, O_{2}

and methane have been taken in a container of volume

V

at temperature

27^{o} C

in identical conditions. The ratio of the volumes of gases

H_{2} : O_{2} :

methane would be

EASY

Science>Chemistry>Gaseous State>Gas Laws

For the given $pV$ isotherms, which of the following is correct for $T_{1}, T_{2}, T_{3} ?$

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EASY

Science>Chemistry>Gaseous State>Gas Laws

10 g

of a gas at

STP

occupies a volume of

2 L

. At what temperature will the volume be doubled, if pressure and amount of the gas remains constant?

EASY

Science>Chemistry>Gaseous State>Gas Laws

Which one of the following is the correct

PV

P

plot at constant temperature for an ideal gas ? (

P

and

V

stand for pressure and volume of the gas respectively)

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Science>Chemistry>Gaseous State>Gas Laws

A mixture of gases

O_{2}, H_{2}

and

C O

are taken in a closed vessel containing charcoal. The graph that represents the correct behaviour of pressure with time is:

EASY

Science>Chemistry>Gaseous State>Gas Laws

Which of the following equations does NOT represent Charles’s law for a given mass of gas at constant pressure?

EASY

Science>Chemistry>Gaseous State>Gas Laws

Slope of the plot between

PV

and

P

at constant temperature is:

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Science>Chemistry>Gaseous State>Gas Laws

At a constant pressure P, the plot of volume (V) as a function of temperature (T) for 2 moles of an ideal gas gives a straight line with a slope

0.328 L . K^{- 1}

. The value of P (in atm) is closest to

[Gas constant,

R = 0.0821 L a t m m o l^{- 1} K^{- 1}

]

EASY

Science>Chemistry>Gaseous State>Gas Laws

An LPG cylinder contains gas at a pressure of

300 kPa

27 ° C

. The cylinder can withstand the pressure of

1.2 \times 10^{6} Pa

. The room in which the cylinder is kept catches fire. The minimum temperature at which the bursting of cylinder will take place is __________

{}^{\circ}C

. (Nearest integer)

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Science>Chemistry>Gaseous State>Gas Laws

The temperature to which the open vessel at

27 ° C

is to be heated to expel

3 / 5

of the air in it is (Assume (i) volume of the vessel remains constant and (ii) ideal behaviour for all gases present in air)

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Science>Chemistry>Gaseous State>Gas Laws

Choose the correct option for graphical representation of Boyle's law, which shows a graph of pressure vs. volume of a gas at different temperatures:

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Science>Chemistry>Gaseous State>Gas Laws

1 L

each of gases

A

and

B

diffused through a membrane in

15

and

30

minutes, respectively, under identical conditions. What is the ratio of molecular weight of

A

and

B ?

EASY

Science>Chemistry>Gaseous State>Gas Laws

Three flasks of equal volumes contain

{CH}_{4}, {CO}_{2} & {Cl}_{2}

gases respectively. They will contain equal number of molecules if

EASY

Science>Chemistry>Gaseous State>Gas Laws

A spherical balloon of radius

3 cm

containing helium gas has a pressure of

48 \times 10^{- 3}

bar. At the same temperature, the pressure, of a spherical balloon of radius

12 cm

containing the same amount of gas will be

\dots \dots \dots \dots . \times 10^{- 6}

bar.

EASY

Science>Chemistry>Gaseous State>Gas Laws

In a closed vessel, an ideal gas at

1 atm

is heated from

27^{o} C to 327^{o} C

, the final pressure of the gas will approximately be

EASY

Science>Chemistry>Gaseous State>Gas Laws

At constant pressure, the volume of a fixed mass of a gas varies as a function on temperature as shown in the graph

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The volume of the gas at $300 ° C$ is larger than that at $0 ° C$ by a factor of

What is STP? Give the values of temperature and pressure at STP.

Important Questions on Gaseous State

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