Kinetic Theory of Gases Test

Result

Kinetic Theory of Gases Test - 57

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Weekly Quiz Competition

Question 1
4 / -1

For a gas γ = 7/5. The gas may probably be

A
Helium

B
Hydrogen

C
Argon

D
Neon

Solution
Question 2
4 / -1

The molar specific heat at constant pressure of an ideal gas is (7/2)R. The ratio of specific heat at constant pressure to that at constant volume is

A
5/7

B
9/7

C
7/5

D
8/7

Solution
Question 3
4 / -1

A
3/4

B
3/5

C
2/7

D
5/7

Solution
Question 4
4 / -1

The degrees of freedom of a stationary rigid body aboutits axis will be

A
One

B
Two

C
Three

D
Four
Question 5
4 / -1

A
1.4

B
1.54

C
1.59

D
1.62

Solution
Question 6
4 / -1

10 moles of an ideal monoatomic gas at 10°C is mixed with 20 moles of another monoatomic gas at 20°C. Then the temperature of the mixture is

A
15.5°C

B
15°C

C
16°C

D
16.6°C

Solution
Question 7
4 / -1

Two cylinders of equal size are filled with equal amount of ideal diatomic gas at room temperature. Both the cylinders are fitted with pistons. In cylinder A the piston is free to move while in B position is fixed. When same amount of heat is supplied to both the cylinders, the temperature of the gas in cylinder A raises by 30 K. What will be the rise in temperature of the gas in cylinder B?

A
42 K

B
30 K

C
20 K

D
56 K

Solution
Question 8
4 / -1

If the internal energy of n₁ moles of He at temperature10 T is equal to the internal energy of n₂ mole ofhydrogen at temperature 6 T. The ratio of n₁/ n₂is

A
3/5

B
2

C
1

D
5/3

Solution
Question 9
4 / -1

A cylinder of fixed capacity (of 44.8 litres) contains 2 moles of helium gas at STP. What is the amount of heat needed to raise the temperature of the gas in the cylinder by 20°C (Use R = 8.31 J mol^–1 K^–1)

A
996 J

B
831 J

C
498 J

D
374 J

Solution
Question 10
4 / -1

The pressure is exerted by the gas on the walls of the container because

A
It loses kinetic energy

B
It sticks with the walls

C
On collision with the walls there is a change in momentum

D
It is accelerated towards the walls

Solution