Physics
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Jul 7, 2022
(a)Â Pressure only (b)Â Volume only (c)Â Â Pressure, volume and temperature (d)Â Number of moles Ans. c
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Jul 7, 2022
(a)Â More for (i) (b)Â More for (ii) (c)Â Â Same in both cases (d)Â Independent of number of moles Ans....
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Jul 7, 2022
(a)Â Â 18JÂ Â Â Â Â Â Â (b)Â 9J (c)Â Â 4.5JÂ Â Â Â Â Â Â (d)Â 36J...
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Jul 7, 2022
(a)Â Â 19.1 kJÂ Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â (b)Â 12.5 kJ (c)Â Â 25 kJÂ Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â (d) Zero Ans. a
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Jul 7, 2022
(a)Â Â 19.1 kJÂ Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â (b)Â 12.5...
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Jul 7, 2022
at constant pressure 2.1 x 105N/m2 , there was an increase in its volume equal to 2.5 x 10-3 m3....
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Jul 7, 2022
(a)Â Zeroth law of thermodynamics (b)Â First law of thermodynamics (c)Â Â Second law of thermodynamics (d)Â Newton’s law of cooling...
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Jul 7, 2022
to that at constant volume is γ, the change in internal energy of a mass of gas, when the volume...
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Jul 7, 2022
(a)Â Its temperature will increase (b)Â Its temperature will decrease (c)Â Â Its temperature will remain constant (d)Â Â None of these...
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Jul 7, 2022
(a)Â Increases by 600 JÂ Â Â Â Â Â Â Â Â Â Â (b)Â Decreases by 800 J (c)Â Â Increases by 800 JÂ Â Â Â Â Â Â Â Â Â Â (d)Â Decreases by 50 J...
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Jul 7, 2022
(a) 7 : 6Â Â Â Â Â Â Â Â Â Â Â Â Â Â (b) 6 : 7...
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Jul 7, 2022
(a)Â Kinetic energy only (b)Â Kinetic and potential energy (c)Â Â Potential energy (d)Â None of these Ans. a
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Jul 7, 2022
(a)Â PÂ Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â (b)Â T (c)Â Â VÂ Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â (d)Â R Ans. d
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Jul 7, 2022
(a) Enthalpy                           (b) Work done (c)  Gibb’s energy                   (d) Internal energy Ans. b
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Jul 7, 2022
(a)Â 150 JÂ Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â (b)Â 70 J (c)Â Â 110 JÂ Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â (d)Â 40 J Ans. b
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Jul 7, 2022
1m3 is divided into two equal compartments by a partition. One of these compartments contains an ideal gas at 300...
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Jul 7, 2022
Δw when an amount of heat is ΔQ added to the system, the corresponding change in the internal energy is...
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Jul 7, 2022
(a)Â 7900 JÂ Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â (b)Â 8200 J (c)Â Â 5600 JÂ Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â (d) 6400 J Ans. a
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Jul 7, 2022
of one atmosphere from 00c to 1000c . Then the change in the internal energy is (a) 6.56 joules                        (b)...
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Jul 7, 2022
(a) 0.56×104 J                       (b) 1.3×102 J (c) 2.7×102 J            ...
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Jul 7, 2022
(a) 4.6×103 K                        (b) 11.6×103 K (c) 23.2×103 K            (d) 7.7×103...
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Jul 7, 2022
(a)Â Â Newton’s law (b)Â Law of conservation of energy (c)Â Â Charle’s law (d)Â Law of heat exchange Ans. b
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Jul 7, 2022
(a) (3/2)kTÂ Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â (b) kT...
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Jul 7, 2022
(a) Only potential energy (b) Only kinetic energy (c) Potential and kinetic energy both (d) None of the above Answer-b...
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Jul 7, 2022
(a) Temperature                   (b) Energy (c)  Work                                 (d) None of these Ans. a
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Jul 7, 2022
T1 and T2 are mixed. There is no loss of energy. The masses of the molecules are m1 and m2...
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Jul 7, 2022
(a) 2×√3R×300 gm×cm/sec (b) 2×3×R×300 gm×cm/sec (c) 1×√3R×300 gm×cm/sec (d) Zero Answer-d
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Jul 7, 2022
(a)Â 30 JÂ Â Â Â Â Â Â Â Â (b)Â 20 J (c) 60 JÂ Â Â Â ...
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Jul 7, 2022
(a)Â Â Â PÂ Â Â Â Â Â Â Â Â Â Â Â Â Â (b)Â < P (c) >...
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Jul 7, 2022
(a) Increase continuously (b) Decreases continuously (c) First increases and then decreases (d) First increase and then becomes constant Answer-c
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Jul 7, 2022
CO2 mixture at 27°C. If R = 8.31 J/mole  kelvin, then the pressure in the vessel in N/m2 will be (approx.)...
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Jul 7, 2022
(a) The internal energy changes in all processes (b)Â Internal energy and entropy are state functions (c)Â Â The change in...
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Jul 7, 2022
(a)Â 100 JÂ Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â (b) 3000 J (c) 450 JÂ Â Â Â Â Â Â Â Â Â Â Â ...
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Jul 7, 2022
(a) Transfer momentum to the walls (b) Momentum becomes zero (c) Move in opposite directions (d) Perform Brownian motion Answer-a
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Jul 7, 2022
(a) Volume                             (b) Temperature (c)  Pressure                           (d) Work Ans. d
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Jul 7, 2022
is Cp=3.4 x 103 cal/kg 0c and at constant volume is Cv= 2.4 x103 cal/kg 0c. If one kilogram hydrogen...
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Jul 7, 2022
(a)Â The temperature will decrease (b)Â The volume will increase (c)Â Â The pressure will remain constant (d)Â The temperature will...
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Jul 7, 2022
(a)Â Pressure and volume (b)Â Volume and temperature (c)Â Â Temperature and pressure (d)Â Any one of pressure, volume or temperature...
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Jul 7, 2022
(a) Q=W=0   and ΔEint =0 (b) Q=0,W>0 and ΔEint =-W (c) W=0,Q>0, and ΔEint = Q (d) W>0,Q<0 ...