Kinetic Theory Of Gases Test

Result

Kinetic Theory Of Gases Test - 4

Score
-
out of -
Rank
-
out of -

TIME Taken - -

SHARING IS CARING

If our Website helped you a little, then kindly spread our voice using Social Networks. Spread our word to your readers, friends, teachers, students & all those close ones who deserve to know what you know now.

Weekly Quiz Competition

Question 1
1 / -0

At absolute zero temperature may be defined as that temperature at which

A
Volume is maximum

B
Root mean square velocity of the gas molecule reduces to zero

C
Temperature is 273 K

D
Mass of molecules of gas is zero

Solution

At 0K temperature we know that there is no molecular motion, that is the KE of the particles gets 0. Thus we can say the combined KE of a gaseous system is zero, but as there combined mass cant be zero thus the combined of the square of velocities of the particles is zero, which means that the root mean square velocity of the gas is zero.
Question 2
1 / -0

Pressure exerted by an ideal gas molecule is given by the expression

A
P=MC²/V

B
P=M²/CV²

C
P=M/VC

D
P=MC²/3V
Question 3
1 / -0

If the r.m.s speed of oxygen at NTP is x m/s. If the gas is heated at constant pressure till its volume is four fold, what will be its final temperature and r.m.s speed?

A
2xm/s

B
3xm/s

C
8xm/s

D
4xm/s

Solution
Question 4
1 / -0

The perfect gas equation is PV = nRT where n is the

A
mass of molecules

B
number of moles

C
number of molecules

D
number of atoms

Solution

n is the number of moles.
Question 5
1 / -0

In a mixture of ideal gases at a fixed temperature the heavier molecule has the lower average speed. This is easiest to conclude from the equation

A

B

C

D

Solution

In option A, v is inversely proportional to mass. Hence, the condition of the question is seen accurately in that option.
Question 6
1 / -0

According to kinetic theory of gases, 0K is that temperature at which for an ideal gas

A
pressure is not zero

B
internal energy is zero

C
nearly all molecular motion becomes very rapid

D
volume is not zero

Solution

According to kinetic theory of gases, 0K is that temperature at which for an ideal gas the internal energy is zero because at 0K nearly all molecular motion stops.
Question 7
1 / -0

The kinetic energy of one mole of an ideal gas is E=3/2 RT. Then C_ρ will be

A
0.5 R

B
1.5 R

C
2.5 R

D
2.2 R

Solution

We know that,
C_p=c_v+R
E=3Rt/2
also,
E=C_v
c_p=R+3RT/2
=5/2 RT
=2.5R
Question 8
1 / -0

Value of gas constant, R for one mole of a gas is independent of the

A
Atomicity of the gas

B
Mass of gas

C
Distance between two molecules of gas at 273 K

D
Volume of gas

Solution

We know that PV=nRT also PM=dRT
So in the equation The value of R depends on P , V , n , T , d , M
except atomicity
so the ans is A
Question 9
1 / -0

The pressure exerted by an ideal gas is numerically equal to _________ of the mean kinetic energy of translation per unit volume of the gas.

A
quarter

B
two third

C
thrice

D
twice

Solution

Translational (KE) per unit volume
Question 10
1 / -0

The average kinetic energy of a molecule in an ideal gas is

A
proportional to the pressure

B
depends on the nature of the ideal gas

C
proportional to the absolute temperature of the gas

D
proportional to the volume

Solution

KE = f/2 KT