Relationship between Temperature, Pressure and Volume

Q.

If the pressure of a gas at S.T.P is doubled and the temperature is raised to 546 K. What is the final Volume of the gas?

1. Cannot tell

2. Same

3. Doubled

4. Tripled

Q.

Gases exert same pressure in all direction.

1. True
2. False

Q.

The figure shows graphs of pressure versus density for an ideal gas at two temperature $T_{1}and{T}_2$ which is correct?

1. T₁ > T₂

2. T₁ = T₂

3. T₁ < T₂

4. None of these

Q.

As the temperature of a substance increases, its molecules move faster and thus the kinetic energy of the molecules increases.

1. True
2. False

Q.

Will value of specific latent heat of a substance change if the scale is °F instead of °C

Q.

If the pressure is doubled for a fixed mass of a gas at constant temperature, What will be the effect on its volume?

1. $\frac{1}{2}$

2. No change

3. 4 times

4. 2 times

Q. The number of moles of $H_2$ in $0.224L$ of hydrogen gas at STP $(273K,1atm)$ assuming its behaviour is:

1. $0.01$
2. $1$
3. $0.001$
4. $0.1$

Q.

What will happen if we pick up weights one by one from the top of the setup?

1. Pressure Decreases

2. Pressure Increases

3. Volume Decreases

4. Volume Increases

Q. k' according to Boyle's law s equal to

1. PT
2. P/V
3. PV
4. P/T

Q. how is specific heat intensive property while heat capacity is extensive prop.??

Q. Find the specific heat of the body, when 0.2 kg of a body at 1000C is dropped into 0.5 kg of
water at 100C, the resulting temperature is 160C. Given: Specific heat of water is 4.2 x 10³
J/kg/0
C.

Q.

4.4 g of a gas at STP occupies a volume of 2.24 L. The gas can be:

1. Dioxygen

2. Carbon monoxide

3. Carbon dioxide

4. Nitric oxide

Q.

For a fixed amount of given gas at temperature and pressure,

1. most probable velocity < average velocity

2. RMS velocity > Average velocity

3. RMS velocity > most probable velocity

4. All of the above

Q. The pressure exerted by 10 litres of gas at 272 K is 1.6 atm. What pressure would be exerted, in atm, by the gas at 409 K, provided that the volume remains constant?

1. 2
2. 2.4
3. 2.8
4. 3.2

Q. Given are the values of their van der Waal's constant 'a'. Arrange the following gases in the order of their expected liquification pressure at a temperature T. T is below the critical point of all the gases.
Gas $C{H}_4$ $Kr$ $N_2$ $C{l}_2$
'a'($atm{L}^2.mo{l}^{-1}$) 2.283 2.439 1.408 6.579

1. $C{H}_4$ < $Kr$ < $N_2$ < $C{l}_2$
2. $N_2$ < $C{H}_4$ < $Kr$ <$C{l}_2$
3. $C{l}_2$ < $Kr$ < $C{H}_4$ < $N_2$
4. $C{l}_2$ < $N_2$ < $Kr$ < $C{H}_4$

Q. Indicate the correct statement for equal volumes of $N_2\left(g\right)$ and $C{O}_2\left(g\right)$ at 298 K and 1 atm.

1. The average translational $KE$ per molecule is the same for $N_2$ and $C{O}_2$
2. the rms speed remains constant for both $N_2$ and $C{O}_2$
3. Both A and B
4. None of the above

Q. <!--td {border: 1px solid #ccc;}br {mso-data-placement:same-cell;}--> What is specific heat? Give specific heat capacity of water.

Q.

At constant pressure, the volume of the fixed mass of an ideal gas is directly proportional to

1. Absolute temperature

2. Degree centigrade

3. Degree Fahrenheit

4. None

Q.

560 cm^3 of air is at preessure of 76 cm of mercury.Find the pressure of air(temp. remains constant) , when its volume is

1. 210cm^3
2. 840cm^3
3. volume increases by 25%

Q. Air is being pumped from a vessel of 9 litre capacity by a pump which has a barrel volume of 1L. If the pressure of the air inside the vessel is 76 cm of Hg what will be the pressure of the air present inside, after the piston of the barrel makes two upwards stroke. (Hint: at each upward stroke, volume doubles and pressure halves.)

Q.

a water pipe has a nozzle at its outlet. the velocity of the water stream emerging from the nozzle is v and the area of cross-section of the nozzle is A. if d is the density of water , find the force experienced by nozzle due to the emerging water stream

Q.

190.0 ml of $N_2$ was collected in a jar over water at some temperature, water level inside and outside the jar standing at the same height. If barometer reads 740 mm Hg and aqueous tenstion at the temperature of the experiment is 20 mm Hg, the volume of the gas at 1 atm pressure and at the same temperature would be ?

1. 180.0 mL

2. 185.0 mL

3. 190.0 mL

4. 195.0 mL

Q.

A body of mass m expands and its volume increases to two times its original volume. The density of the body .

1. remains constant
2. becomes twice
3. is reduced by half

Q. What is the volume occupied, in litres, by one mole of an ideal gas at 400K and 3 atm pressure?

Given that the universal gas constant R has a value of $0.082litreatmmo{l}^{-1}{K}^{-1}$.

1. 9.5
2. 10.33
3. 10.93
4. 11.5