Kinetic Theory of Gases Test

Result

Kinetic Theory of Gases Test - 21

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Weekly Quiz Competition

Question 1
4 / -1

Air is filled in a bottle at atmospheric pressure and it is corked at 35°C. If the cork can come out at 3 atmospheric pressure than upto what temperature should the bottle be heated in order to remove the cork

A
325.5°C

B
851°C

C
651°C

D
None of these

Solution
Question 2
4 / -1

An electron tube was sealed off during manufacture at a pressure of 1.2 × 10^–7 mm of mercury at 27°C. Its volume is 100 cm³. The number of molecules that remain in the tube is

A
2 × 10¹⁶

B
3 × 10¹⁵

C
3.86 × 10¹¹

D
5 × 10¹¹

Solution
Question 3
4 / -1

2 g of O₂ gas is taken at 27°C and pressure 76 cm Hg. Find out volume of gas (in litre)

A
1.53

B
2.44

C
3.08

D
44.2

Solution
Question 4
4 / -1

The product of the pressure and volume of an ideal gas is

A
A constant

B
Approx. equal to the universal gas constant

C
Directly proportional to its temperature

D
Inversely proportional to its temperature

Solution
Question 5
4 / -1

A balloon contains 500 m³ of helium at 27°C and 1 atmosphere pressure. The volume of the helium at –3 °C temperature and 0.5 atmosphere pressure will be

A
500 m³

B
700 m³

C
900 m³

D
1000 m³

Solution
Question 6
4 / -1

Helium gas goes through a cycle ABCDA (consisting of two isochoric and isobaric lines) as shown in figure. Efficiency of this cycle is nearly (Assume the gas to be close to ideal gas)

A
15.4%

B
9.1%

C
10.5%

D
12.5%

Solution
Question 7
4 / -1

1 mole of gas occupies a volume of 100 ml at 50 mm pressure. What is the volume occupied by two moles of gas at 100 mm pressure and at same temperature?

A
50 ml

B
100 ml

C
200 ml

D
500 ml

Solution
Question 8
4 / -1

Kinetic theory of gases was put forward by

A
Einstein

B
Newton

C
Maxwell

D
Raman
Question 9
4 / -1

A flask is filled with 13 g of an ideal gas at 27°C and its temperature is raised to 52°C. The mass of the gas that has to be released to maintain the temperature of the gas in the flask at 52°C and the pressure remaining the same is

A
2.5 g

B
2.0 g

C
1.5 g

D
1.0 g

Solution
Question 10
4 / -1

When volume of system is increased two times and temperature is decreased half of its initial temperature, then pressure becomes

A
2 times

B
4 times

C
1/4 times

D
1/2 times

Solution