• ( 1 ) The amount of heat energy per kilogram that must be added or removed when a substance changes from one phase to another.

    • 1) specific heat
    • 2) heat of expansion
    • 3) latent heat
    • 4) useful heat
    • Discussion in forum
      Answer : 3) latent heat
      Solution :








      discussion


      Answer : 3) latent heat

    • ( 2 ) The change in physical size of a substance when its temperature changes.

    • 1) intensive property
    • 2) extensive property
    • 3) volume expansion
    • 4) thermal expansion
    • Discussion in forum
      Answer : 4) thermal expansion
      Solution :








      discussion


      Answer : 4) thermal expansion

    • ( 4 ) A plot of pressure vs. temperature for a given substance showing the various phases possible for that particular substance.

    • 1) Phase diagram
    • 2) P-T diagram
    • 3) Wein Diagram
    • 4) Histogram
    • Discussion in forum
      Answer : 1) Phase diagram
      Solution :








      discussion


      Answer : 1) Phase diagram

    • ( 5 ) _________ is the grand total of all energies inside a substance.

    • 1) Internal Energy
    • 2) Grand Energy
    • 3) Atomic Energy
    • 4) Elemental Energy
    • Discussion in forum
      Answer : 1) Internal Energy
      Solution :








      discussion


      Answer : 1) Internal Energy

    • ( 6 ) _________ the very small KE still present in molecules at absolute zero temperature.

    • 1) internal KE
    • 2) Atomic kinetic energy
    • 3) Zero-Point Energy
    • 4) Subliminal Energy
    • Discussion in forum
      Answer : 3) Zero-Point Energy
      Solution :








      discussion


      Answer : 3) Zero-Point Energy

    • ( 7 ) When a solid melts,

    • 1) the temperature of the substance increases.
    • 2) the temperature of the substance decreases.
    • 3) heat leaves the substance.
    • 4) heat enters the substance.
    • Discussion in forum
      Answer : 4) heat enters the substance.
      Solution :








      discussion


      Answer : 4) heat enters the substance.

    • ( 8 ) Which of the following is the formula for thermal resistance?

    • 1) Thickness of material/ thermal conductivity of material
    • 2) 2(thickness of material)/thermal conductivity of material
    • 3) Thickness of material/ 2(thermal conductivity of material)
    • 4) Thickness of material x thermal conductivity of material
    • Discussion in forum
      Answer : 1) Thickness of material/ thermal conductivity of material
      Solution :








      discussion


      Answer : 1) Thickness of material/ thermal conductivity of material

    • ( 9 ) The coefficient of performance (COP) is the ratio between the:

    • 1) Power consumption in watts and heat absorbed per hour
    • 2) Heat absorbed per hour and the power consumption in watts
    • 3) Work required and the absorbed heat
    • 4) Absorbed heat and work required
    • Discussion in forum
      Answer : 4) Absorbed heat and work required
      Solution :








      discussion


      Answer : 4) Absorbed heat and work required

    • ( 10 ) What predicts the approximate molar specific heat at high temperatures from the atomic weight?

    • 1) Third law of thermodynamics
    • 2) Law of Dulong and Petit
    • 3) Mollier diagram
    • 4) Pressure-enthalpy diagram
    • Discussion in forum
      Answer : 2) Law of Dulong and Petit
      Solution :








      discussion


      Answer : 2) Law of Dulong and Petit





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