Thermal Properties of Matter Test

Result

Thermal Properties of Matter Test - 19

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Weekly Quiz Competition

Question 1
4 / -1

The critical volume of a gas obeying Vander Waal’s equation is

A

B

C
3 b

D
Question 2
4 / -1

The expansion of a mass m of an ideal gas at a constant pressure P is shown by the line H. The expansion of a mass 2 m of the same gas at pressure P/2 is shown by :

A
line F

B
line G

C
line H

D
line I
Question 3
4 / -1

If ‘S’ is stress and ‘Y’ is Young’s modulus of material of a wire, then the energy stored in the wire per unit volume is

A

B

C

D

Solution
Question 4
4 / -1

Small liquid drops assume spherical shape because

A
atmospheric pressure exerts a force on a liquid drop

B
volume of a spherical drop is minimum

C
gravitational force acts upon the drop

D
liquid tends to have the minimum surface area due to surface tension.
Question 5
4 / -1

A vessel contains a mixture of one mole of oxygen and two moles of nitrogen at 300K. The ratio of the average rotational kinetic energy per O₂ molecule to the per N₂ molecule is

A
1 : 1

B
1 : 2

C
2 : 1

D
depends upon the moment of inertia of two molecules
Question 6
4 / -1

A water film is formed between two straight parallel wires of 10 cm length 0.5cm apart. If the distance between two wires is increased by 1 mm. What will be the work done? (Surface tension of water = 72 dyne/cm)

A
72erg

B
144 erg

C
288 erg

D
36 erg
Question 7
4 / -1

The average translational kinetic energy of at a particular temperatureis 0.048 eV. The average translational kinetic energy of N₂ molecules in eV at the same temperature is

A
0.0015

B
0.0030

C
0.048

D
0.768.
Question 8
4 / -1

The load versus elongation graph for four wires of the same materials is shown in the Fig. The thinnest wire is represented by the line

A
OC

B
OD

C
OA

D
OB
Question 9
4 / -1

A U-tube is partially filled with water. Oil which does not mix with water is next poured into one side, until water rises by 25 cm on the other side. If the density of the oil is 0.8 g/cc, the oil level will stand higher than the water level by

A
6.25 cm

B
12.50 cm

C
18.75 cm

D
25.00 cm
Question 10
4 / -1

Two soap bubbles of radii r₁ and r₂ equal to 4 cm and 5 cm respectively are touching each other over a common surface AB (shown in Fig). Its radius will be

A
4 cm

B
4.5 cm

C
5 cm

D
20 cm

Solution