Tamil Nadu (English Medium) Plus 1 Biology Science Study Materials, Online Learning, Question Papers, Classnotes, Practice Test, MCQ | Smartindia Educational Program : www.smartindia.net.in


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Question-1 A container has N molecules at absolute temperature T. If the number of molecules is doubled but kinetic energy in the box remains the same, the absolute temperature of the gas is

(A) T	(B)2T
(C)T/2	(D)Zero

Question-2 The r.m.s velocity of nitrogen molecules at N.T.P is

(A) 33 m/s	(B)493 m/s
(C)517 m/s	(D)546 m/s

Question-3 Air is filled at 60^o C in a vessel with open mouth. The vessel is heated to a temperature T so that 1/4^thpart of air escapes. Assuming the volume of vessel remains constant, the value of T is

(A) 80^o C	(B)143^oC
(C)333^o C	(D)416^o C

Question-4 At what temperature is the r.m.s. speed of molecules of hydrogen twice that at S.T.P. ?

(A) 273 K	(B)546 K
(C)819 K	(D)1092 K

Question-5 Heat capacity of a body is infinite. It means

(A) Heat is given out	(B)Heat is taken in
(C)No change in temperature whether heat is taken in or given out	(D)All of these

Question-6 An electric fan is switched on in a closed room. The air in the room

(A) Is cooled	(B)Is heated
(C)Maintains its temperature	(D)Is heated or cooled depending upon atmosphere pressure

Question-7 A vessel contains 1 mole of O₂ gas (molar mass 32) at temperature T. The pressure of the gas is P. An identical vessel containing one mole of He (molar mass 4) at a temperature 2T has a pressure of

(A) P/8	(B)P
(C)8P	(D)2P

Question-8 The efficiency of a Carnot engine operating between temperatures of 100^oC and -23^oC will be

(A)	(B)
(C)	(D)

Question-9 110 J of heat is added to a gaseous system, whose internal energy is 40 J, then the amount of external work done is

(A) 150 J	(B)70 J
(C)110 J	(D)40 J

Question-10 If the temperature of the sun is doubled, the rate of energy received on earth will be increased by a factor of

(A) 2	(B)4
(C)8	(D)16

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Plus 1 Biology Science

Tamil Nadu (English Medium)

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