1

JEE Main 2019 (Online) 12th April Morning Slot

MCQ (Single Correct Answer)

+4

-1

Enthalpy of sublimation of iodine is 24 cal g

^{–1 }at 200^{o}C. If specific heat of I_{2}(s) and l_{2}(vap) are 0.055 and 0.031 cal g^{–1}K^{–1}respectively, then enthalpy of sublimation of iodine at 250^{o}C in cal g^{–1}is :2

JEE Main 2019 (Online) 12th April Morning Slot

MCQ (Single Correct Answer)

+4

-1

An ideal gas is allowed to expand form 1 L to 10 L against a constant external pressure of I bar. The work
done in kJ is :

3

JEE Main 2019 (Online) 10th April Evening Slot

MCQ (Single Correct Answer)

+4

-1

The difference between $$\Delta $$H and $$\Delta $$U ($$\Delta $$H – $$\Delta $$U), when the combustion of one mole of heptane(l) is carried
out at a temperature T, is equal to :

4

JEE Main 2019 (Online) 10th April Morning Slot

MCQ (Single Correct Answer)

+4

-1

A process will be spontaneous at all temperatures if :

Questions Asked from Thermodynamics (MCQ (Single Correct Answer))

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