States of Matter Questions

Match List - I with List - IIList-I (Example)A. HumidityB. AlloysC. AmalgamsD. SmokeList-II (Type of Solution)I. Solid in solidII. Liquid in gasIII. Solid in gasIV. Liquid in solidChoose the correct answer from the options given below:

By what factors does the average velocity of a gaseous molecule increase when the temperature (in Kelvin) is doubled?

Two gases $A$ and $B$ having the same volume diffuse through a porous partition in $20$ and $10$ seconds respectively. The molecular mass of $A$ is $49\text{u}$. Molecular mass of $B$ will be:

A gaseous mixture was prepared by taking equal moles of $\text{CO}$ and ${\text{N}}_2$. If the total pressure of the mixture was found to be $1$ atmosphere, the partial pressure of nitrogen (${\text{N}}_2$) in the mixture is:

Assertion : Compressibility factor for hydrogen varies with pressure with positive slope at all pressures.Reason : Even at low pressures, repulsive forces dominate hydrogen gas.

If a gas expands at constant temperature, it indicates that:

What is the dominant intermolecular force or bond that must be overcome in converting liquid ${\text{CH}}_3\text{OH}$ to a gas?

Air bubble at $15^{\circ }\text{C}$ and $1.5\text{bar}$ rises to surface where it is $25^{\circ }\text{C}$ and $1.0\text{bar}$. The volume becomes:

Equal volumes of two monoatomic gases, $A$ and $B$, at same temperature and pressure are mixed. The ratio of specific heats ($C_p/C_v$) of the mixture will be:

For real gases van der Waals equation is written as:
$$\left(P+\frac{a{n}^2}{V^2}\right)(V-nb)=nRT$$
Select the correct order for constants '$a$ ' and '$b$ ':

A certain gas takes three times as long to effuse out as helium. Its molecular mass will be:

$50\text{mL}$ of each gas $A$ and of gas $B$ takes $150$ and $200$ seconds respectively for effusing through a pin hole under the similar conditions. If molecular mass of gas $B$ is $36$, the molecular mass of gas $A$ will be:

Maximum deviation from ideal gas behavior is expected from:

A gas such as carbon monoxide would be most likely to obey the ideal gas law at:

Equal moles of hydrogen and oxygen gases are placed in a container with a pin-hole through which both can escape. What fraction of the oxygen escape in the time required for one-half of the hydrogen to escape?