Thermal Properties of Matter Test

Result

Thermal Properties of Matter Test - 55

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Question 1
4 / -1

A
9 × 10^–6/^oC

B
6 × 10^–6/^oC

C
36 × 10^–6/^oC

D
27 × 10^–6/^oC

Solution
Question 2
4 / -1

Solid expand on heating because

A
Kinetic energy of the atoms increases

B
Potential energy of the atoms increases

C
Total energy of the atoms increases

D
The potential energy curve is asymmetric about the equilibrium distance between neighbouring atoms

Solution
Question 3
4 / -1

An iron tyre is to be fitted on to a wooden wheel 1 m in diameter. The diameter of tyre is 6mm 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 9 × 10^–5/^oC)

A
167^oC

B
334^oC

C
500^oC

D
1000^oC

Solution
Question 4
4 / -1

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

A
21.2 cc

B
15. 2 cc

C
1.52 cc

D
2.12 cc

Solution
Question 5
4 / -1

Two metal strips that constitute necessarily differ in their

A
Mass

B
Length

C
Resistivity

D
Coefficient of linear expansion
Question 6
4 / -1

A metal ball immersed in alcohol weighs W₁ at 0^oC and W₂ at 59^oC. the coefficient of cubical expansion of the metal is less than that of alcohol. Assuming that the density of metal is large compared to that of alcohol, it can be shown that

A
W₁ > W₂

B
W₁ = W₂

C
W₁ < W₂

D
W₁ = (W₂/2)

Solution
Question 7
4 / -1

A piece of metal weighs 46 g in air. When it is immersed in the liquid of specific gravity 1.24 at 27^oC it weighs 30 g. When the temperature of liquid is raised to 42^oC the metal piece weighs 30.5 g, specific gravity of the liquid at 42^oC is 1.20, then the linear expansion of the metal will be

A
3.316 × 10^–5/^oC

B
2.316 × 10^–5/^oC

C
4.316 × 10^–5/^oC

D
None of these

Solution
Question 8
4 / -1

It is known that wax contracts on solidification. If molten wax is taken in a large vessel and it is allowed to cool slowly, then

A
It will start solidifying from the top to downward

B
it will start solidifying from the bottom to upward

C
It will start solidifying from the middle, upward and downward at equal rates

D
The whole mass will solidifying simultaneously
Question 9
4 / -1

A substance of mass m kg requires a power input of P watt to remain in the molten state at its melting point. When the power is turned off, the sample completely solidifies in time t sec. What is the latent heat of fusion of the substance?

A

B

C

D

Solution
Question 10
4 / -1

Steam at 100^oC is passed into 1.1 kg of water contained in a calorimeter of water equivalent to 0.02 kg at 15^oC till the temperature of the calorimeter and its contents rises to 80^oC . The mass of the steam condensed in kg is

A
0.130

B
0.065

C
0.260

D
0.135

Solution