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Calculate the pressure of gas at constant volume, if a $10 g$ of a gas at one atmospheric pressure is cooled from $27 3^{o} C$ to $0^{o} C$ .

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Important Questions on Atoms and Molecules

EASY

Science>Chemistry>Atoms and Molecules>The 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

MEDIUM

Science>Chemistry>Atoms and Molecules>The 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>Atoms and Molecules>The Gas Laws

Modern vacuum pumps can evacuate a vessel down to a pressure of

4.0 \times 1 0^{- 15}

atm. at room temperature (300 K). Taking R = 8.3 JK^-1 mole^-1, 1 atm = 10⁵ Pa and

N_{Avogadro} = 6 \times 1 0^{23} {mole}^{- 1}

, the mean distance between molecules of gas in an evacuated vessel will be of the order of :

EASY

Science>Chemistry>Atoms and Molecules>The 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>Atoms and Molecules>The Gas Laws

Among the following pairs of compounds, the one that does not illustrate the law of multiple proportions, is

EASY

Science>Chemistry>Atoms and Molecules>The 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>Atoms and Molecules>The 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

MEDIUM

Science>Chemistry>Atoms and Molecules>The 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 ?

EASY

Science>Chemistry>Atoms and Molecules>The Gas Laws

The statement related to law of definite proportions is

EASY

Science>Chemistry>Atoms and Molecules>The Gas Laws

A bicycle tyre is filled with air having pressure of

270 kPa

27 ° C

. The approximate pressure of the air in the tyre when the temperature increases to

36 ° C

MEDIUM

Science>Chemistry>Atoms and Molecules>The Gas Laws

The minimum pressure required to compress

600 {dm}^{3}

of a gas at

1

bar to

150 {dm}^{3}

40 ° C

MEDIUM

Science>Chemistry>Atoms and Molecules>The Gas Laws

56.0 L

of nitrogen gas is mixed with excess of hydrogen gas and it is found that

20 L

of ammonia gas is produced, The volume of unused nitrogen gas is found to be_____

L

EASY

Science>Chemistry>Atoms and Molecules>The 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?

MEDIUM

Science>Chemistry>Atoms and Molecules>The 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>Atoms and Molecules>The Gas Laws

Which of the following graphs represents Charle's law?

EASY

Science>Chemistry>Atoms and Molecules>The Gas Laws

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

Question Image

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Science>Chemistry>Atoms and Molecules>The 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)

EASY

Science>Chemistry>Atoms and Molecules>The 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

Question Image

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

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Science>Chemistry>Atoms and Molecules>The Gas Laws

By heating

200 g

of metal carbonate,

112 g

of metal oxide on a gaseous compound are produced. Vapour density of the gaseous compound is

22

. How many moles of gaseous compound is produced in the reaction?

EASY

Science>Chemistry>Atoms and Molecules>The Gas Laws

Which of the following is an example of Law of multiple proportion?

Calculate the pressure of gas at constant volume, if a 10g of a gas at one atmospheric pressure is cooled from 273oC to 0oC .

Important Questions on Atoms and Molecules

Learn and Prepare for any exam you want !

Calculate the pressure of gas at constant volume, if a $10 g$ of a gas at one atmospheric pressure is cooled from $27 3^{o} C$ to $0^{o} C$ .