1
JEE Main 2020 (Online) 4th September Evening Slot
Numerical
+4
-0
The change in the magnitude of the volume of an ideal gas when a small additional pressure $$\Delta$$P is applied at a constant temperature, is the same as the change when the temperature is reduced by a small quantity $$\Delta$$T at constant pressure. The initial temperature and pressure of the gas were 300 K and 2 atm. respectively.
If |$$\Delta$$T| = C|$$\Delta$$P| then value of C in (K/atm.) is _________.
2
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 _______.
3
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 0oC to ice, how much heat (in calories) is released to the surroundings at temperature 27oC (Latent heat of ice = 80 Cal/gram) to the nearest integer ?
4
JEE Main 2020 (Online) 3rd September Morning Slot
Numerical
+4
-0
A bakelite beaker has volume capacity of 500 cc at 30oC. When it is partially filled with Vm volume (at 30oC) of mercury, it is found that the unfilled volume of the beaker remains constant as temperature is varied. If $$\gamma$$(beaker) = 6 × 10–6 oC–1 and $$\gamma$$(mercury) = 1.5 × 10–4 oC–1, where $$\gamma$$ is the coefficient of volume expansion, then Vm (in cc) is close to ____.