Q.22 Which of the following is used for measurement of high temperatures?
(A) vapor thermometer
(B) energy meter
(C) resistance thermometer
(D) pyrometer
Q.23 If boiling water is taken to the dark side of the moon it will
(A) immediately vaporize
(B) immediately freeze
(C) continue to boil
(D) stop boiling but remain hot
Q.24 Which two liquids are used in the construction of minimum and maximum thermometers?
(A) mercury and water
(B) water and alcohol
(C) mercury and alcohol
(D) mercury and bromine
Q.25 Which one among the following statements about thermal conductivity is correct?
(A) Steel > Wood > Water
(B) Steel > Water > Wood
(C) Water > Steel > Wood
(D) Water > Wood > Steel
Q.26 A hot object loses heat to its surroundings in the form of heat radiation. The rate of loss of heat depends on the
(A) temperature of the object
(B) temperature of the surroundings
(C) temperature difference between the object and its surroundings
(D) average temperature of the object and its surroundings
Q.27 Body A of mass 2 kg and another body B of mass 4 kg and of the same material are kept in the same sunshine for some interval of time. If the rise in temperature is equal for both the bodies, then which one among the following in this regard is correct?
(A) Heat absorbed by B is double because its mass is double
(B) Heat absorbed by A is double because its mass is half
(C) Heat absorbed by Both A and B is equal because the quantity of heat absorbed does not depend upon mass
(D) Heat absorbed by B is four times than the heat absorbed by A because the quantity of heat absorbed is proportional to square of the mass
Q.28 A glass of water does not turn into ice as it reaches 0° C. It is because
(A) water does not solidify at 0° C
(B) a certain amount of heat must be supplied to the glass of water so as to solidify
(C) a certain amount of heat must be taken out from the glass of water so as to solidify
(D) water solidifies at 0° K only
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