# HEAT GAS LAWS

## Unit – VII HEAT GAS LAWS - PHYSICS

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 Question 1
The degree of hotness or coldness of a body is ……………
 A heat B temperature
 Question 2
Select the liquid from the following which has the specific heat capacity of 4180 Jkg-1 k-1
 A mercury B kerosene C water D coconut oil
 Question 3
Heat is that form of energy that is transferred from one object to another due to ………….
 A height difference B temperature difference C mass difference D velocity difference
 Question 4
Heat is energy that is ………………
 A in transit B stationary C contained in a body
 Question 5
Heat is ……………
 A moving energy B unmoving energy
 Question 6
Absolute scale of temperature is known as …………
 A Celsius B scale C Kelvin scale
 Question 7
One of the pioneers of manned balloon.
 A Jacques Charles B Ben Franklin C Ferdinand Zeppelin D Henri Giffard
 Question 8
The substance with highest specific heat capacity
 A copper B aluminium C mercury D water
 Question 9
The substance with lowest specific heat capacity.
 A copper B aluminium C mercury D water
 Question 10
Gas equation
 A P/T = Constant B V/T = Constant C PV/T = Constant D PV = Constant
 Question 11
The concept of absolute zero was proposed by………..
 A Jacques Charles B Lord Kelvin C Gay Lussac D Dalton
 Question 12
The heat required to raise the temperature of unit mass of a substance through unit temperature.
 A Thermal capacity B Specific heat capacity
 Question 13
At constant temperature, when the volume increases, the pressure ………….
 A Decreases B Increases
 Question 14
Pressure remaining constant, the volume of a given mass of gas is directly proportional to the absolute temperature.  This is called the law of …………….
 A Pressures B Volumes
 Question 15
……… is Mars Orbiter Spacecraft.
 A Chandrayan B Mangalyan
 Question 16
Match the following:
• Change of State                                    Example
1. Vaporization                  a) Burning of champhor
2. Condensation               b) Water changed into ice
3. Freezing                        c) Steam
4. Sublimation                 d) Rain
 A 3 4 2 1 B 4 3 1 2 C 2 1 3 4 D 1 2 4 3
 Question 17
Match the following:
1. Boyle’s Law a) P/T = a constant
2. Charles Law b) PV = a constant
3. Law of pressures c) V/T = a constant
 A 3 2 1 B 3 1 2 C 2 1 3 D 1 2 3
 Question 18
Match the following: Quantity                          Unit
1. Specific latent heat    a) Kelvin
2. Thermal capacity          b) JKg-1K-1
3. Specific heat capacity    c) J/Kg
4. Temperature                    d) JK-1
 A 3 2 1 4 B 3 1 4 2 C 2 1 3 4 D 4 3 1 2
 Question 19
Match the following:
• Quantity / Law                                    Formula
1. Boyle’s Law a) V/T = a constant
2. Latent heat b) m x c x ∆t
3. Charle’s Law c) mL
4. Quantity of heat d) PV = a constant
 A 3 1 4 2 B 3 2 1 4 C 3 4 2 1 D 4 3 1 2
 Question 20
• Assertion (A) : The specific heat capacity of water is the highest of all substances.
•     Reason (R)     : Thermal capacity is the amount of heat required to raise the temperature of 1kg of a substance       through 1 K.
 A A is correct, R is wrong B R is correct, A is wrong C A is correct, R explains s A D Both A and R are correct
 Question 21
• Assertion (A)   : Temperature remaining constant, the pressure of a given mass of gas is directly proportional to its   volume.
•     Reason (R)        : The heat required to melt a substance without change in temperature is called latent heat of    fusion
 A A is correct, R is wrong B A is wrong, R is correct C A is correct, R explains s A D Both A and R are correct
 Question 22
• Assertion (A) : The zero of the Kelvin scale corresponds to -273oC
•     Reason (R)     : At this temperature all molecules come to rest.  So it is called absolute zero.
 A A is correct, R is wrong B A is wrong, R is correct C A is correct, R explains s A D Both A and R are correct
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There are 22 questions to complete.

### Winmeen

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