1

JEE Main 2020 (Online) 4th September Morning Slot

Numerical

+4

-0

A closed vessel contains 0.1 mole of a monoatomic ideal gas at 200 K. If 0.05 mole of the same gas
at 400 K is added to it, the final equilibrium temperature (in K) of the gas in the vessel will be close
to _______.

Your input ____

2

JEE Main 2020 (Online) 3rd September Evening Slot

Numerical

+4

-0

Out of Syllabus

If minimum possible work is done by a refrigerator in converting 100 grams of water at 0

^{o}C to ice, how much heat (in calories) is released to the surroundings at temperature 27^{o}C (Latent heat of ice = 80 Cal/gram) to the nearest integer ?Your input ____

3

JEE Main 2020 (Online) 3rd September Morning Slot

Numerical

+4

-0

A bakelite beaker has volume capacity of 500 cc at 30

^{o}C. When it is partially filled with Vm volume (at 30^{o}C) of mercury, it is found that the unfilled volume of the beaker remains constant as temperature is varied. If $$\gamma $$_{(beaker)}= 6 × 10^{–6}^{o}C^{–1}and $$\gamma $$_{(mercury)}= 1.5 × 10^{–4}^{o}C^{–1}, where $$\gamma $$ is the coefficient of volume expansion, then V_{m}(in cc) is close to ____.Your input ____

4

JEE Main 2020 (Online) 2nd September Morning Slot

Numerical

+4

-0

An engine takes in 5 moles of air at 20

^{o}C and 1 atm, and compresses it adiabatically to 1/10^{th}of the original volume. Assuming air to be a diatomic ideal gas made up of rigid molecules, the change in its internal energy during this process comes out to be X kJ. The value of X to the nearest integer is________.Your input ____

Questions Asked from Heat and Thermodynamics (Numerical)

Number in Brackets after Paper Indicates No. of Questions

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