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JEE Main 2022 (Online) 25th July Evening Shift
Numerical
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A sealed flask with a capacity of 2 dm3 contains 11 g of propane gas. The flask is so weak that it will burst if the pressure becomes 2 MPa. The minimum temperature at which the flask will burst is ___________ $$^\circ$$C. [Nearest integer]

(Given : R = 8.3 J K$$-$$1 mol$$-$$1 , Atomic masses of C and H are 12u and 1u, respectively.) (Assume that propane behaves as an ideal gas.)

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JEE Main 2022 (Online) 25th July Morning Shift
Numerical
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The pressure of a moist gas at $$27^{\circ} \mathrm{C}$$ is $$4 \mathrm{~atm}$$. The volume of the container is doubled at the same temperature. The new pressure of the moist gas is ________________ $$\times 10^{-1} \mathrm{~atm}$$. (Nearest integer)

(Given : The vapour pressure of water at $$27^{\circ} \mathrm{C}$$ is $$0.4 \mathrm{~atm} .$$ )

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JEE Main 2022 (Online) 29th June Morning Shift
Numerical
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Geraniol, a volatile organic compound, is a component of rose oil. The density of the vapour is 0.46 gL$$-$$1 at 257$$^\circ$$C and 100 mm Hg. The molar mass of geraniol is ____________ g mol$$-$$1. (Nearest Integer)

[Given : R = 0.082 L atm K$$-$$1 mol$$-$$1]

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4
JEE Main 2022 (Online) 28th June Evening Shift
Numerical
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100 g of an ideal gas is kept in a cylinder of 416 L volume at 27$$^\circ$$C under 1.5 bar pressure. The molar mass of the gas is __________ g mol$$-$$1. (Nearest integer)

(Given : R = 0.083 L bar K$$-$$1 mol$$-$$1)

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