Back to STATES OF MATTER
JEE CHEMISTRY MCQ: STATES OF MATTER
1
Medium
1 of 1
Analyzing
+4 | -1
Assertion (A): Wet air is heavier than dry air.
Reason (R): The density of dry air is more than density of water.
Reason (R): The density of dry air is more than density of water.
View answer and explanation
Correct option: D
Assertion is incorrect, reason is correct
Wet air is lighter than dry air because water vapor (H2O) has a lower molar mass than the average molar mass of dry air (mostly N2 and O2). The reason is correct that dry air is denser than water, but this doesn't explain why wet air is lighter.
More Questions from STATES OF MATTER
Practice All Chapter MCQs →
A quantity of hydrogen gas occupies a volume of at a certain temperature and pressure. What volume would half this mass of hydrogen occupy at triple the absolute temperature and the pressure were one-ninth that of the original gas?
In deriving the kinetic equation we make use of the root mean square speed of the molecules which is:
Consider the following statements for kinetic molecular theory of gases
a. Particles of a gas move in all possible directions in straight lines.
b. At any particular time, different particles in the gas have different kinetic energies.
c. Collisions of gas molecules are perfectly inelastic in nature.
The correct statement(s) is/are The compressibility factor of an ideal gas is The relative strength of interionic/intermolecular forces in decreasing order is Compressibility factor of an ideal gas is
a. Particles of a gas move in all possible directions in straight lines.
b. At any particular time, different particles in the gas have different kinetic energies.
c. Collisions of gas molecules are perfectly inelastic in nature.
The correct statement(s) is/are The compressibility factor of an ideal gas is The relative strength of interionic/intermolecular forces in decreasing order is Compressibility factor of an ideal gas is