Q.15 Which of the following is equivalent of a calorie?
(A) the specific heat of water.
(B) the energy needed to increase the temperature of 1 gram of water 1 degree Celsius.
(C) equivalent to a little over 4 joules of mechanical work.
(D) all of the above.
Q.16 In which of the following processes of heat transfer no medium is required?
(A) Conduction
(B) Convection
(C) Radiation
(D) All
Q.17 In which of the following processes is heat transferred directly from molecule to molecule?
(A) conduction
(B) convection
(C) radiation
(D) all of the above
Q.18 When a solid, liquid, or a gas changes from one physical state to another, the change is called
(A) melting
(B) enthalpy
(C) a phase change
(D) sublimation
Q.19 The surface which radiates more heat at a given temperature is
(A) Black and Polished
(B) White and polished
(C) White and Rough
(D) Black and Rough
Q.20 Compared to warm air, cool air can hold
(A) more water vapor
(B) less water vapor
(C) the same amount of water vapor
(D) temperature is unimportant here
Q.21 The change of state directly from solid to gas is called
(A) evaporation
(B) sublimation
(C) condensation
(D) deposition
If you have any problem or doubt regarding GK Questions on Heat & Temperature for Competitive Exams, you can ask me in the comment section. To more practice for GK Questions, Visit next page.
Get the Examsbook Prep App Today