Water expands on reducing its temperature below __________ ${ }^{\circ} C$.
- A$0$
- ✓$4$
- C$12$
- D$5$
Answer: B.
View full solution →Question types
P-1 Heat question types
18 questions across 6 question groups — pick any mix to generate a Science paper with step-by-step answer keys.
18
Questions
6
Question groups
5
Question types
01
M.C.Q
3 Q→02Answer the following questions:[1 M]
1 Q→03Answer the following questions: [2 M]
7 Q→04Answer the following questions: [3 M]
5 Q→05Answer the following questions: [5 M]
1 Q→06Do As Directed.
1 Q→Sample Questions
P-1 Heat questions
One sample from each question group in this chapter. Select any group above to see the full set with answer keys.
The SI unit of heat is _______________.
- Acalorie
- Bjoule
- C$kcal / kg ^{\circ} C$
- D$cal / g ^{\circ} C$
The vapour content in the air is measured using a physical quantity called _____________.
- ✓Absolute humidity
- BRelative humidity
- CDew point
- DHumidity
Answer: A.
View full solution →Write the use of 'Calorimeter'.
How do we feel about air in each of the following conditions?
i. Relative humidity is more than 60%.
ii. Relative humidity is less than 60%.
i. Relative humidity is more than 60%.
ii. Relative humidity is less than 60%.
Draw a neat labelled diagram of Hope's Apparatus.
How much heat energy is necessary to raise the temperature of 5 kg of water from $20^{\circ} C$ to $100^{\circ} C$ ?
View full solution →Observe the given graph and answer the following questions:
i. Name the process represented in the figure.
ii. At what temperature does this process take place?
i. Name the process represented in the figure.
ii. At what temperature does this process take place?
How much heat energy is necessary to raise the temperature of 10 kg of water from $30^{\circ} C$ to $100^{\circ} C$ ? (Specific heat capacity of water (c) $=1 kcal / kg ^{\circ} C$ )
View full solution →Explain the following temperature vs time graph.
Observe the following graph answer the following questions.
i. What does the graph represent?
ii. What does the line AB represent?
iii. What does the line BC represent?
i. What does the graph represent?
ii. What does the line AB represent?
iii. What does the line BC represent?
Observe the following figure and answer the questions:
i. Which element has maximum specific heat capacity? Justify.
ii. Which element has minimum specific heat capacity? Justify.
iii. Define specific heat of object.
i. Which element has maximum specific heat capacity? Justify.
ii. Which element has minimum specific heat capacity? Justify.
iii. Define specific heat of object.
Read the following paragraph and answer the questions based on it:
If heat is exchanged between a hot and cold object, the temperature of the cold object goes on increasing due to gain of energy and the temperature of the hot object goes on decreasing due to loss of energy.
The change in temperature continues till the temperatures of both the objects attain the same value. In this process, the cold object gains heat energy and the hot object loses heat energy. If the system of both the objects is isolated from the environment by keeping it inside a heat resistant box, then no energy can flow from inside the box or come into the box.
i. Heat is transferred from where to where?
ii. Which principle do we learn about from this process?
iii. How will you state the principle briefly?
If heat is exchanged between a hot and cold object, the temperature of the cold object goes on increasing due to gain of energy and the temperature of the hot object goes on decreasing due to loss of energy.
The change in temperature continues till the temperatures of both the objects attain the same value. In this process, the cold object gains heat energy and the hot object loses heat energy. If the system of both the objects is isolated from the environment by keeping it inside a heat resistant box, then no energy can flow from inside the box or come into the box.
i. Heat is transferred from where to where?
ii. Which principle do we learn about from this process?
iii. How will you state the principle briefly?
A copper sphere of 100 g mass is heated to raise its temperature to $100^{\circ} C$ and is released in water of mass 195 g and temperature $20^{\circ} C$ in a copper calorimeter. If the mass of calorimeter is 50 g , what will be the maximum temperature of water?
(Given: specific heat of copper $=0.1 cal / g ^{\circ} C$ )
View full solution →(Given: specific heat of copper $=0.1 cal / g ^{\circ} C$ )
Observe the given diagram and answer the following questions:
i. What is the name of the given apparatus?
ii. Which phenomenon is studied with the help of this apparatus?
iii. What are the final temperatures in thermometers $T _1$ and $T _2$ ?
iv. At what temperature the density of water is maximum?
v. Give one example of the above phenomenon in nature.
View full solution →i. What is the name of the given apparatus?
ii. Which phenomenon is studied with the help of this apparatus?
iii. What are the final temperatures in thermometers $T _1$ and $T _2$ ?
iv. At what temperature the density of water is maximum?
v. Give one example of the above phenomenon in nature.
Name the behaviour of water between its temperature from $0^{\circ} C$ to $4^{\circ} C$.
View full solution →Generate a P-1 Heat paper free
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