The amount of heat required to raise the temperature of a body by $1^0C$ is called .........
View full solution →Question types
Heat question types
162 questions across 6 question groups — pick any mix to generate a Physics paper with step-by-step answer keys.
162
Questions
6
Question groups
5
Question types
01
[1 Mark Question Answer]
52 Q→02[2 Mark Question Answer]
62 Q→03[3 Mark Question Answer]
24 Q→04[5 Mark Question Answer]
2 Q→05MCQ
6 Q→06fill in the blanks.
16 Q→Sample Questions
Heat questions
One sample from each question group in this chapter. Select any group above to see the full set with answer keys.
Why does a copper rod become warmer than an aluminium rod of the same mass, when put in the sun for the same length of time?
Does the specific heat depend upon the temperature?
What do you mean by thermal capacity?
Name the physical quantity which has its unit as j/(kg)/(K).
State the principle of calorimetry.
Why do we use water as a cooling agent in the radiators of automobiles?
Why is the ocean known as storehouse of heat energy?
The specific heat of a substance of mass 100 g is $0.04 cal g-1{ }^0 C ^{-1}$. What is its heat capacity?
View full solution →Why does cause more severe burns than water at $100^0C?$
View full solution →Why does the temperature of a substance remain constant during the process of melting?
The graph given below represents a cooling curve fore a substance being cooled from a higher temperature to a lower temperature.
(a)What is the boiling point of the substance?
(b)What happens in the region DE?
(c)What is the melting point of the substance?
(a)What is the boiling point of the substance?
(b)What happens in the region DE?
(c)What is the melting point of the substance?
A piece of ice is heated at a constant rate. The variation in temperature with time of heating is shown in the graph (see fig.)
(i) What is represented by AB?
(ii) What does CD represent?
(iii) What conclusion can you draw regarding the nature of ice from the graph below?
(i) What is represented by AB?
(ii) What does CD represent?
(iii) What conclusion can you draw regarding the nature of ice from the graph below?
Which represents a greater temperature rise,$ 20^0C$ or $20^0 F?$
View full solution →A bucket contains $8$ kg of water at $25^{\circ} C .2 kg$ of water at $80^{\circ} C$ is poured into it. Neglecting the heat energy absorbed by the bucket, calculate the final temperature of water.
View full solution →Describe a method to determine the specific heat capacity of a solid, like a piece of copper.
A copper calorimeter weighing 57.5 g contains 60 g of water at 12°C. 55 g of iron nails at 100°C are dropped into the calorimeter ands stirred rapidly. The final temperature attained by the calorimeter and its contents is 20°C. Calculate the specific heat of iron. (Sp. heat of copper = 0.4 J/g°C, Sp. heat of water = 4.2 J/g°C).
A solid is heated at a constant rate in an insulated container till half of it vaporizes. Which of the following graphs show the temperature changes during this time?
- A
- B
- C
- ✓
Answer: D.
View full solution →A solid is heated at a constant rate in an insulated container till half of it
vapourises. Which graph in the following fig shows the temperature changes during this time?
vapourises. Which graph in the following fig shows the temperature changes during this time?
- A
- B
- C
- ✓
Answer: D.
View full solution →What change in heat energy occurs when lead at its melting point
solidifies without change in the temperature?
solidifies without change in the temperature?
- ✓Latent heat is emitted
- BLatent heat is absorbed
- CSpecific heat capacity is emitted
- DSpecific heat capacity is absorted
Answer: A.
View full solution →A substance is heated at a constant rate from a low temperature to a high
temperature. A graph of temperature against time is drawn and is shown in
fig. . Which part of parts of the graph corresponds to the substance existing
in two states?
temperature. A graph of temperature against time is drawn and is shown in
fig. . Which part of parts of the graph corresponds to the substance existing
in two states?
- AAll of it
- BOA , BC , and DE
- ✓AB and CD
- DDE
Answer: C.
View full solution →2000 J of heat energy is required to raise the temperature of 4 kg of a metal by 3°c. Which expression gives the specific heat capacity of the metal?
- ✓$2000 /(4 \times 3) \mathrm{J} / \mathrm{kg}^{\circ} \mathrm{C}$
- B$\frac{2000}{4} \times 4 \mathrm{jjkg}^{\circ} \mathrm{C}$
- C$2000 \times \frac{4}{3} \mathrm{~J} / \mathrm{kg}^{\circ} \mathrm{C}$
- D$4 \times \frac{3}{2000} \mathrm{~J} / \mathrm{kg}^{\circ} \mathrm{C}$
Answer: A.
View full solution →The product of mass and specific heat is known as ..........
$1$ cal $g^{-1 ^\circ }C^{-1} =$ ........... $J kg^{-1} ^\circ C-1.$
View full solution →The physical quantity which does not change during change of state is ............. of the body.
When a liquid is solidified, it many either expand or contract. As water freezes to form ice it ........... And .............. in volume by ............. per cent.
The substances like water which have ........... Heat capacity warm up more slowly than substances like iron which have .......... heat capacity.
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