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JEE • PHYSICS • THERMAL PROPERTIES OF MATTER

Thermal properties of matter practice · Hard

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Practice format and chapter quiz

These sets use single-correct-answer MCQs. They do not cover every JEE Main or JEE Advanced question format and are not full-length mock papers.

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1 Hard

1 of 6

Understanding +4 | -1

For cooking the food, which of the following type of utensil is most suitable

View answer and explanation

Correct option: D

Low specific heat and high conductivity

Option D (Low specific heat and high conductivity) is correct because utensils should heat up quickly (low specific heat) and transfer heat efficiently (high conductivity).

2 Hard

2 of 6

Application +4 | -1

19 \mathrm{~g}

of water at

30^{\circ} \mathrm{C}

and

5 \mathrm{~g}

of ice at

-20^{\circ} \mathrm{C}

are mixed together in calorimeter. What is the final temperature of the mixture? Given specific heat of ice

=0.5 \,\mathrm{cal} \,\mathrm{g}^{-1}\left({ }^{\circ} \mathrm{C}\right)^{-1}

and latent heat of fusion of ice

=80\,cal\,{g^{ - 1}}

View answer and explanation

Correct option: C

5^{\circ} \mathrm{C}

Option C (5°C) is correct because the final temperature of the mixture is calculated using the principle of calorimetry, equating heat lost by water to heat gained by ice.

3 Hard

3 of 6

Understanding +4 | -1

Can we boil water inside the earth satellite by convection

View answer and explanation

Correct option: B

Option B (No) is correct because convection requires gravity to create density differences that drive the fluid motion, and this is absent in an earth satellite.

4 Hard

4 of 6

Application +4 | -1

If 1 g of ice at

0^{\circ} \mathrm{C}

is added to 5 g of water at

10^{\circ} \mathrm{C}.

If the latent heat of ice is

80 \mathrm{~cal} / \mathrm{g},

the final temperature of the mixture is

View answer and explanation

Correct option: B

0^{\circ} \mathrm{C}

Option B (

0^{\circ} \mathrm{C}

) is correct because the heat released by the water is not enough to melt all the ice, so the final temperature is 0°C.

5 Hard

5 of 6

Application +4 | -1

A piece of metal weighs

46 \mathrm{~g}

in air. When immersed in a liquid of specific gravity

1.24

27^{\circ} \mathrm{C}

it weighs

30 \mathrm{~g}

. When the temperature of liquid is raised to

42^{\circ} \mathrm{C}

the metal piece weighs

30.5 \mathrm{~g}

. Specific gravity of liquid at

42{ }^{\circ} \mathrm{C}

1.20.

Calculate the coefficient of linear expansion of metal

View answer and explanation

Correct option: A

2.23 \times 10^{-5}{ }^{\circ} \mathrm{C}^{-1}

Option A (

2.23 \times 10^{-5} { }^{\circ} \mathrm{C}^{-1}

) is correct because it is the coefficient of linear expansion calculated using the change in weight and specific gravity of the metal piece in the liquid.

6 Hard

6 of 6

Application +4 | -1

A copper sphere is suspended in an evacuated chamber maintained at

300 \mathrm{~K}

. The sphere is maintained at a constant temperature of

500 \mathrm{~K}

by heating it electrically. A total of

300 \mathrm{~W}

of electric power is needed to do it. When half of the surface of the copper sphere is completely blackened

600 \mathrm{~W}

is needed to maintain the same temperature of the sphere. Calculate the emissivity of copper.

View answer and explanation

Correct option: A

\mathrm{e}=\frac{1}{3}

Option A (

\mathrm{e}=\frac{1}{3}

) is correct because it is calculated by setting up a ratio of the power needed in both cases using Stefan-Boltzmann law.

Revision notes and key takeaways

Review THERMAL PROPERTIES OF MATTER in your textbook or class notes, then use this set to check your understanding.

Key Takeaways

✓ This set contains 6 single-correct-answer MCQs on THERMAL PROPERTIES OF MATTER.
✓ Try each question before opening its answer. Read the explanation where one is available.
✓ Sign in to save submitted answers. Revisit incorrect answers alongside your textbook or class notes.

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