#### Kinetic Theory of Gases One Mark Questions

11th Standard

Reg.No. :
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Physics

Time : 00:30:00 Hrs
Total Marks : 10
10 x 1 = 10
1. A sample of ideal gas is at equilibrium. Which of the following quantity is zero?

(a)

rms speed

(b)

average speed

(c)

average velocity

(d)

most probable speed

2. An ideal gas is maintained at constant pressure. If the temperature of an ideal gas increases from 100K to 1000K then the rms speed of the gas molecules

(a)

increases by 5 times

(b)

increases by 10 times

(c)

remains same

(d)

increases by 7 times

3. Two identically sized rooms A and B are connected by an open door. If the room A is air conditioned such that its temperature is 4° lesser than room B, which room has more air in it?

(a)

Room A

(b)

Room B

(c)

Both room has same air

(d)

Cannot be determined

4. The average translational kinetic energy of gas molecules depends on

(a)

number of moles and T

(b)

only on T

(c)

P and T

(d)

P only

5. If the internal energy of an ideal gas U and volume V are doubled then the pressure

(a)

doubles

(b)

remains same

(c)

halves

(d)

6. Kinetic theory

(a)

Correctly explains specific heat capacities of many liquid

(b)

Correctly explains specific heat capacities of many gases

(c)

Correctly explains specific heat capacities of many solids

(d)

Correctly explains specific heat capacities of many super cooled liquid

7. The average distance a molecule can travel without colliding is called

(a)

mean free distance

(b)

mean free path

(c)

mean free length

(d)

mean free motion

8. In dynamic equilibrium, molecules of gas collide and change their speeds during the collision

(a)

but the average properties vary

(b)

but the average properties constant

(c)

but the peak properties constant

(d)

but the rms properties constant

9. The perfect gas equation can be written as

(a)

PV = $\mu$RT

(b)

PV = $\mu$R

(c)

PV = RT

(d)

P = $\mu$RTV

10. According to Dalton's law of partial pressures:

(a)

total pressure of a mixture of real gases is the sum of factored in - virtual pressure

(b)

total pressure of a mixture of ideal gases is the difference partial pressure

(c)

total pressure of a mixture of real gases is the sum of pressures

(d)

total pressure of a mixture of real gases is the sum of partial pressure