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( 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
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Show Answer Report Discussion in forumAnswer : 3) latent heat
Solution :
discussion
Answer : 3) latent heat
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( 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
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Show Answer Report Discussion in forumAnswer : 4) thermal expansion
Solution :
discussion
Answer : 4) thermal expansion
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( 3 ) Vapor pressure depends only on _________.
- 1) pressure
- 2) force
- 3) volume
- 4) temperature
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Show Answer Report Discussion in forumAnswer : 4) temperature
Solution :
discussion
Answer : 4) temperature
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( 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
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Show Answer Report Discussion in forumAnswer : 1) Phase diagram
Solution :
discussion
Answer : 1) Phase diagram
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( 5 ) _________ is the grand total of all energies inside a substance.
- 1) Internal Energy
- 2) Grand Energy
- 3) Atomic Energy
- 4) Elemental Energy
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Show Answer Report Discussion in forumAnswer : 1) Internal Energy
Solution :
discussion
Answer : 1) Internal Energy
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( 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
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Show Answer Report Discussion in forumAnswer : 3) Zero-Point Energy
Solution :
discussion
Answer : 3) Zero-Point Energy
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( 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.
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Show Answer Report Discussion in forumAnswer : 4) heat enters the substance.
Solution :
discussion
Answer : 4) heat enters the substance.
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( 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
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Show Answer Report Discussion in forumAnswer : 1) Thickness of material/ thermal conductivity of material
Solution :
discussion
Answer : 1) Thickness of material/ thermal conductivity of material
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( 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
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Show Answer Report Discussion in forumAnswer : 4) Absorbed heat and work required
Solution :
discussion
Answer : 4) Absorbed heat and work required
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( 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
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Show Answer Report Discussion in forumAnswer : 2) Law of Dulong and Petit
Solution :
discussion
Answer : 2) Law of Dulong and Petit
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