CBSE
Multiple Choice QuestionsUnder isothermal condition, a gas at 300 K expands from 0.1 L to 0.25 L against a constant external pressure of 2 bar. The work done by the gas is:(Given that 1 L bar = 100 J)
5 kJ
25 J
30 J
-30 J
In which case change in entropy is negative?
Expansion of a gas at constant temperature
Sublimation of solid to gas
2H(g) → H2(g)
Evaporation of water
Which is correct for an enothermic reaction?
H is positive
H is negative
E is negative
H= zero
Ionisation depends upon :
pressure
volume
dilution
none of these
