1. : What is the SI unit of temperature?
(A) Celsius
(B) Fahrenheit
(C) Kelvin
(D) Joule
2. : What is the process called when heat is transferred through a fluid (liquid or gas) due to the movement of the fluid itself?
(A) Conduction
(B) Convection
(C) Radiation
(D) Reflection
3. : What is the principle behind a thermos bottle’s ability to keep liquids hot or cold?
(A) Conduction
(B) Convection
(C) Radiation
(D) Insulation
4. : What is the temperature at which water boils under standard atmospheric pressure (1 atm)?
(A) 0°C
(B) 50°C
(C) 100°C
(D) 212°C
5. : Which law of thermodynamics states that energy cannot be created or destroyed, only transformed?
(A) Zeroth Law
(B) First Law
(C) Second Law
(D) Third Law
6. : What is the specific heat capacity of a substance?
(A) The amount of heat required to change the temperature of a unit mass of the substance by 1°C
(B) The total heat content of a substance
(C) The heat required to change the state of a substance
(D) The ability of a substance to conduct heat
7. : In which mode of heat transfer does heat travel through electromagnetic waves?
(A) Conduction
(B) Convection
(C) Radiation
(D) Insulation
8. : What is the term for the process of heat transfer through direct contact of particles in solids?
(A) Convection
(B) Conduction
(C) Radiation
(D) Evaporation
9. : What is the effect of increasing the temperature on the kinetic energy of molecules in a substance?
(A) Kinetic energy decreases
(B) Kinetic energy remains the same
(C) Kinetic energy increases
(D) Kinetic energy becomes constant
10. : What does the Second Law of Thermodynamics state about entropy?
(A) Entropy remains constant in a closed system
(B) Entropy increases over time in an isolated system
(C) Entropy decreases over time in an isolated system
(D) Entropy can only be decreased by external work
11. : What is the main difference between heat and temperature?
(A) Heat is a measure of energy, while temperature is a measure of the rate of energy transfer
(B) Heat is the transfer of energy, while temperature is a measure of thermal energy
(C) Heat and temperature are the same thing
(D) Heat is a measure of temperature, while temperature is a measure of energy transfer
12. : Which substance has the highest specific heat capacity among the following?
(A) Water
(B) Iron
(C) Lead
(D) Copper
13. : What is latent heat?
(A) The heat required to change the temperature of a substance
(B) The heat required to change the state of a substance without changing its temperature
(C) The heat released during a chemical reaction
(D) The heat absorbed from the surroundings
14. : What is the temperature at which all molecular motion ceases, according to the third law of thermodynamics?
(A) 0°C
(B) -273°C
(C) 0 K
(D) 273 K
15. : What happens to the volume of most gases when their temperature is increased at constant pressure?
(A) Volume decreases
(B) Volume remains the same
(C) Volume increases
(D) Volume fluctuates