Thermal Properties of Matter Test

Result

Thermal Properties of Matter Test - 33

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Question 1
4 / -1

At some temperature T, a bronze pin is a little large to fit into a hole drilled in a steel block. The change in temperature required for an exact fit is minimum when

A
Only the block is heated

B
Both block and pin are heated together

C
Both block and pin are cooled together

D
Only the pin is cooled
Question 2
4 / -1

The volume of a gas at 20°C is 100 cm³ at normal pressure. If it is heated to 100°C, its volume becomes 125 cm³ at the same pressure, then volume coefficient of the gas at normal pressure is

A
0.0015/°C

B
0.0045/°C

C
0.0025/°C

D
0.0033/°C

Solution
Question 3
4 / -1

The coefficient of superficial expansion of a solid is 2 × 10^–5/° C. Its coefficient of linear expansion is

A
4 × 10^–5/° C

B
3 × 10^–5/° C

C
2 × 10^–5/° C

D
1 × 10^–5/° C

Solution
Question 4
4 / -1

Coefficient of real expansion of mercury is 0.18 × 10^–3 /° C. If the density of mercury at 0°C is 13.6 gm/cc, its density at 473 K is

A
13.11 gm/cc

B
26.22 gm/cc

C
52.11 gm/cc

D
None of these

Solution
Question 5
4 / -1

The real coefficient of volume expansion of glycerine is 0.000597 per°C and linear coefficient of expansion of glass is 0.000009 per°C. Then the apparent volume coefficient of expansion of glycerine is

A
0.000558 per°C

B
0.00057 per°C

C
0.00027 per°C

D
0.00066 per°C

Solution
Question 6
4 / -1

A beaker is completely filled with water at 4°C. It will overflow if

A
Heated above 4°C

B
Cooled below 4°C

C
Both heated and cooled above and below 4°C respectively

D
None of the above

Solution
Question 7
4 / -1

The volume of a metal sphere increases by 0.24% when its temperature is raised by 40°C. The coefficient of linear expansion of the metal is ....... °C

A
2 × 10^–5 per ° C

B
6 × 10^–5 per ° C

C
2.1 × 10^–5 per ° C

D
1.2 × 10^–5 per ° C

Solution
Question 8
4 / -1

If on heating liquid through 80°C. the mass expelled is (1/100)th of mass still remaining, the coefficient of apparent expansion of liquid is

A
1.25 × 10^–4/° C

B
12.5 × 10^–4/° C

C
1.25 × 10^–5/° C

D
None of these

Solution
Question 9
4 / -1

A piece of metal weighs 45 g in air and 25 g in a liquid of density 1.5 × 10³ kg-m^–3 kept at 30°C. When the temperature of the liquid is raised to 40°C, the metal piece weighs 27 g. The density of liquid at 40°C, is 1.25 × 10³kg-m^–3 . The coefficient of linear expansion of metal is

A
1.3 × 10^–3/° C

B
5.2 × 10^–3/° C

C
2.6 × 10^–3/° C

D
0.26 × 10^–3/° C

Solution
Question 10
4 / -1

A cylindrical metal rod of length L₀ is shaped into a ring with a small gap as shown. On heating the system

A
x decreases, r and d increase

B
x and r increase, d decreases

C
x, r and d all increase

D
Data insufficient to arrive at a conclusion