Heat & Temperature

Q. If 100 g of water at 0°C is mixed with 100 g of water at 100°C, what will be the final temperature?
  • A. 50°C
  • B. 25°C
  • C. 75°C
  • D. 0°C
Q. If 100 g of water at 0°C is mixed with 100 g of water at 100°C, what will be the final temperature of the mixture?
  • A. 50°C
  • B. 25°C
  • C. 75°C
  • D. 0°C
Q. If 100 g of water at 80°C is mixed with 200 g of water at 20°C, what will be the final temperature?
  • A. 30°C
  • B. 40°C
  • C. 50°C
  • D. 60°C
Q. If the temperature of an ideal gas is doubled at constant volume, what happens to its pressure?
  • A. It halves
  • B. It remains the same
  • C. It doubles
  • D. It quadruples
Q. In which of the following materials does heat transfer occur primarily through conduction?
  • A. Metal
  • B. Water
  • C. Air
  • D. Vacuum
Q. In which of the following processes does the internal energy of a system remain constant?
  • A. Isothermal process
  • B. Adiabatic process
  • C. Isobaric process
  • D. Isochoric process
Q. In which of the following processes does the temperature of a gas increase?
  • A. Isothermal expansion
  • B. Adiabatic compression
  • C. Isobaric expansion
  • D. Isochoric cooling
Q. In which of the following processes does the temperature of a substance remain constant?
  • A. Heating
  • B. Cooling
  • C. Phase change
  • D. Compression
Q. In which of the following processes does the temperature of the system remain constant?
  • A. Isothermal process
  • B. Adiabatic process
  • C. Isobaric process
  • D. Isochoric process
Q. In which of the following scenarios does conduction occur?
  • A. Heating water in a pot
  • B. Sun warming the Earth
  • C. Wind blowing
  • D. Ice melting in a drink
Q. In which process does a gas do work on its surroundings?
  • A. Isothermal expansion
  • B. Adiabatic compression
  • C. Isochoric process
  • D. Isobaric process
Q. What happens to the temperature of a gas when it expands adiabatically?
  • A. It increases
  • B. It decreases
  • C. It remains constant
  • D. It depends on the gas
Q. What happens to the temperature of a substance during a phase change?
  • A. It increases
  • B. It decreases
  • C. It remains constant
  • D. It fluctuates
Q. What is the effect of increasing the temperature of a gas at constant volume?
  • A. Pressure decreases
  • B. Pressure increases
  • C. Volume increases
  • D. Density increases
Q. What is the latent heat of fusion for ice?
  • A. 334 J/g
  • B. 2260 J/g
  • C. 4190 J/g
  • D. 1000 J/g
Q. What is the latent heat of fusion?
  • A. Heat required to change a solid to a liquid
  • B. Heat required to change a liquid to a gas
  • C. Heat required to change a gas to a solid
  • D. Heat required to change a liquid to a solid
Q. What is the principle behind a thermometer?
  • A. Expansion of liquid with temperature
  • B. Contraction of gas with temperature
  • C. Change in color with temperature
  • D. Change in pressure with temperature
Q. What is the relationship between temperature and kinetic energy of particles in a substance?
  • A. Directly proportional
  • B. Inversely proportional
  • C. No relationship
  • D. Depends on the substance
Q. What is the SI unit of temperature?
  • A. Celsius
  • B. Fahrenheit
  • C. Kelvin
  • D. Rankine
Q. What is the specific heat capacity of water?
  • A. 1 J/g°C
  • B. 4.18 J/g°C
  • C. 2 J/g°C
  • D. 0.5 J/g°C
Q. Which law states that the total energy of an isolated system remains constant?
  • A. First law of thermodynamics
  • B. Second law of thermodynamics
  • C. Zeroth law of thermodynamics
  • D. Third law of thermodynamics
Q. Which of the following is a good conductor of heat?
  • A. Wood
  • B. Plastic
  • C. Copper
  • D. Glass
Q. Which of the following is a measure of the average kinetic energy of particles in a substance?
  • A. Heat
  • B. Temperature
  • C. Thermal energy
  • D. Latent heat
Q. Which of the following processes involves a change in temperature?
  • A. Isothermal process
  • B. Adiabatic process
  • C. Isobaric process
  • D. Isochoric process
Q. Which of the following processes is an example of an isothermal process?
  • A. Heating a gas in a closed container
  • B. Compressing a gas without heat exchange
  • C. Melting ice at 0°C
  • D. Cooling a gas at constant pressure
Q. Which of the following statements is true about thermal equilibrium?
  • A. Heat flows from cold to hot
  • B. Heat flows from hot to cold
  • C. No heat flow occurs
  • D. Temperature is irrelevant
Q. Which process involves a change in temperature due to heat transfer?
  • A. Isothermal process
  • B. Adiabatic process
  • C. Isobaric process
  • D. Isochoric process
Q. Which process involves a change in temperature without a change in heat content?
  • A. Isothermal process
  • B. Adiabatic process
  • C. Isochoric process
  • D. Isobaric process
Q. Which process involves a change in temperature without a change in phase?
  • A. Melting
  • B. Boiling
  • C. Heating
  • D. Condensation
Q. Which process involves the transfer of heat through the movement of fluids?
  • A. Conduction
  • B. Convection
  • C. Radiation
  • D. Insulation
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