Kinetic Theory of Gases Test

Result

Kinetic Theory of Gases Test - 20

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Question 1
4 / -1

A cylinder of 5 litres capacity, filled with air at N.T.P. is connected with another evacuated cylinder of 30 litres of capacity. The resultant air pressure in both the cylinders will be

A
38.85 cm of Hg

B
21.85 cm of Hg

C
10.85 cm of Hg

D
14.85 cm of Hg

Solution
Question 2
4 / -1

Volume of gas becomes four times, if

A
Temperature becomes four times at constant pressure

B
Temperature becomes one fourth at constant pressure

C
Temperature becomes two times at constant pressure

D
Temperature becomes half at constant pressure

Solution
Question 3
4 / -1

Kinetic theory of gases provide a base for

A
Charle's law

B
Boyle's law

C
Charle's law and Boyle's law

D
None of the above
Question 4
4 / -1

At constant temperature on increasing the pressure of a gas by 5% its volume decrease by

A
5%

B
5.26%

C
4.26%

D
4.76%

Solution
Question 5
4 / -1

When the pressure on 1200 ml of gas in increased from 70 cm to 120 cm of mercury at constant temperature, the new volume of the gas will be

A
700 ml

B
600 ml

C
500 ml

D
400 ml

Solution
Question 6
4 / -1

The gas equation PV/T Constant is true for a constant mass of an ideal gas undergoing

A
Isothermal change

B
Adiabatic change

C
Isobaric change

D
Any type of change
Question 7
4 / -1

Saturated vapor is compressed to half its volume without any change in temperature, then the pressure will be

A
Doubled

B
Halved

C
The same

D
Zero
Question 8
4 / -1

125 ml of gas A at 0.60 atmosphere and 150 ml of gas B at 0.80 atmospheric pressure at same temperature is filled in a vessel of 1 litre volume. What will be the total pressure of mixture at the same temperature?

A
0.140 atmosphere

B
0.120 atmosphere

C
0.195 atmosphere

D
0.212 atmosphere

Solution
Question 9
4 / -1

Two moles of ideal helium gas are in a rubber balloon at 30°C. The balloon is fully expandable and can be assumed to require no energy in its expansion. The temperature of the gas in the balloon is slowly changed to 35°C. The amount of heat required in raising the temperature is nearly (Take R = 8.31 J/mol K)

A
62 J

B
104 J

C
124 J

D
208 J

Solution
Question 10
4 / -1

For one gram mol of a gas, the value of R in the equation PV = RT is nearly

A
2 cal/mole–kelvin

B
10 cal/mole–kelvin

C
0.2 cal/mole–kelvin

D
200 cal/mole–Kelvin

Solution