A container of volume 1m3 is divided into two equal compartments by a partition. One of these compartments contains an ideal gas at 300 K. The other compartment is vaccum. The whole system is thermally isolated from its surroundings. The partition is removed and the gas expands to occupy the whole volume of the container. Its temperature now would be -

(1) 300 K

(2) 239 K

(3) 200 K

(4) 100 K

Subtopic:  First Law of Thermodynamics |
 79%
From NCERT
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110 J of heat is added to a gaseous system, whose internal energy change is 40 J, then the amount of external work done is 

(1) 150 J

(2) 70 J

(3) 110 J

(4) 40 J

Subtopic:  First Law of Thermodynamics |
 90%
From NCERT
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Which of the following is not thermodynamical function ?

(1) Enthalpy

(2) Work done

(3) Gibb's energy

(4) Internal energy

Subtopic:  Basic Terms |
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When the amount of work done is 333 cal and change in internal energy is 167 cal, then the heat supplied is -

(1) 166 cal

(2) 333 cal

(3) 500 cal

(4) 400 cal

Subtopic:  First Law of Thermodynamics |
 85%
From NCERT
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First law thermodynamics states that

(1) System can do work

(2) System has temperature

(3) System has pressure

(4) Heat is a form of energy

Subtopic:  First Law of Thermodynamics |
 75%
From NCERT
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A thermo-dynamical system is changed from state (P1, V1) to (P2, V2) by two different process. The quantity which will remain same will be

(1) ΔQ

(2) ΔW

(3) ΔQ + ΔW

(4) ΔQ – ΔW

Subtopic:  First Law of Thermodynamics |
 78%
From NCERT
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If ΔQ and ΔW represent the heat supplied to the system and the work done on the system respectively, then the first law of thermodynamics can be written as 

(1) ΔQ = ΔU + ΔW

(2) ΔQ = ΔU – ΔW

(3) ΔQ = ΔW – ΔU

(4) ΔQ = –ΔU – ΔW

where ΔU is the internal energy

Subtopic:  First Law of Thermodynamics |
 55%
From NCERT
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Which of the following can not determine the state of a thermodynamic system?

1. pressure and volume
2. volume and temperature
3. temperature and pressure
4. any one of pressure, volume, or temperature

Subtopic:  Basic Terms |
 79%
From NCERT
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Which of the following is not a thermodynamics co-ordinate ?

(1) P

(2) T

(3) V

(4) R

Subtopic:  Basic Terms |
 94%
From NCERT
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The second law of thermodynamics states that in a cyclic process:

1. Work cannot be converted into heat

2. Heat cannot be converted into work

3. Work cannot be completely converted into heat

4. Heat cannot be completely converted into work

Subtopic:  Second Law of Thermodynamics |
 55%
From NCERT
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