Thermal Properties of Matter Test

Result

Thermal Properties of Matter Test - 36

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Question 1
4 / -1

4200 J of work is required for

A
Increasing the temperature of 10 gm of water through 10°C

B
Increasing the temperature of 100 gm of water through 10°C

C
Increasing the temperature of 1 kg of water through 10°C

D
Increasing the temperature of 10 kg of water through 10°C

Solution
Question 2
4 / -1

The temperature at which the vapour pressure of a liquid becomes equals to the external (atmospheric) pressure is its

A
Melting point

B
Sublimation point

C
Critical temperature

D
Boiling point
Question 3
4 / -1

When the pressure on water is increased the boiling temperature of water as compared to 100°C will be

A
Lower

B
The same

C
Higher

D
On the critical temperature
Question 4
4 / -1

A hammer of mass 1 kg having speed of 50 m/s, hit a iron nail of mass 200 gm. If specific heat of iron is 0.105 cal/gm°C and half the energy is converted into heat, the raise in temperature of nail is

A
7.1°C

B
9.2°C

C
10.5°C

D
12.1°C

Solution
Question 5
4 / -1

A glass flask is filled up to a mark with 50 cc of mercury at 18°C. If the flask and contents are heated to 38°C, how much mercury will be above the mark ? (α for glass is 9 × 10^–6/0 C and coefficient of real expansion of mercury is 180 × 10^–6/°C)

A
0.85 cc

B
0.46 cc

C
0.153 cc

D
0.05 cc

Solution
Question 6
4 / -1

The coefficient of apparent expansion of mercury in a glass vessel is 153 × 10^–6/°C and in a steel vessel is 144 × 10^–6/°C .If a for steel is 12 × 10^–6/°C, then that of glass is

A
9 × 10^–6/°C

B
6 × 10^–6/°C

C
36 × 10^–6/°C

D
27 × 10^–6/°C

Solution
Question 7
4 / -1

An iron tyre is to be fitted on to a wooden wheel 1 m in diameter. The diameter of tyre is 6 mm smaller than that of wheel. The tyre should be heated so that its temperature increases by a minimum of (the coefficient of cubical expansion of iron is 3.6 × 10^–6 /°C

A
167°C

B
334°C

C
500°C

D
1000°C

Solution
Question 8
4 / -1

A glass flask of volume one litre at 0°C is filled, level full of mercury at this temperature. The flask and mercury are now heated to 100°C. How much mercury will spill out, if coefficient of volume expansion of mercury is 1.82 × 10^–4/°C and linear expansion of glass is 0.1 × 10^–4/°C respectively

A
21.2 cc

B
15.2 cc

C
1.52 cc

D
2.12 cc

Solution
Question 9
4 / -1

A steel scale measures the length of a copper wire as 80.0 cm, when both are at 20°C (the calibration temperature for scale). What would be the scale read for the length of the wire when both are at 40°C ? (Given α_steel = 11 × 10^–6 per°C and α_copper = 17 × 10^–6 per° C)

A
80.0096 cm

B
80.0272cm

C
1 cm

D
25.2 cm

Solution
Question 10
4 / -1

Two metal strips that constitute a thermostat necessarily differ in their

A
Mass

B
Length

C
Resistivity

D
Coefficient of linear expansion