States of Matter

States of Matter
Class:XI / Unit:5

1. What are the conditions for gas like Carbon monoxide to obey the ideal gas laws ?

low temperature and low pressure
high temperature and low pressure
low temperature and high pressure
high temperature and high pressure

2. If the temperature is doubled, the average velocity of a gaseous molecule increases by

2
4
2.8
1.4

3. At the same temperature, the average molar kinetic energy of N₂ and CO is

KE₁ = KE₂
KE₁ > KE₂
KE₁ < KE₂
insufficient information given

4. Name the liquid with higher vapour pressure in the following pairs:

Alcohol, glycerine
Alcohol, Water, Petrol
Petrol, Water, Alcohol
Alcohol, Petrol, Water

5. A gas deviates from ideal behavior at a high pressure because its molecules:

Are bound by covalent bonds
Have kinetic energy
Show the Tyndall Effect
Attract one another

6. The value of universal gas constant R depends on

Number of Moles of Gas
Volume of Gas
Temperature of Gas
Units of Volume,Temperature and Pressure

7. In van der Waal equation of state of gas laws, the constant b is a measure of

Intermolecular attraction
Volume occupied by the molecules
Intermolecular collisions per unit volume
Intermolecular repulsions

8. The rise or fall of a liquid within a tube of small bore is called:

Surface Tension
Capillary Action
Viscosity
Formation of Curvature

9. The theory which explains that gases consist of molecules, which are in rapid option is known as:

Kinetic Molecular Theory
Daltons Atomic Theory
Bohrs Theory
Rutherfords Atomic Theory

10. The law, which states that at constant temperature, the volume of a given mass of gas is inversely proportional is pressure, is known as:

Boyles law
Charles law
Combine gas law
Avogadros law