States of Matte...

The van der Waals equation is true for

Dalton’s Law of Partial Pressures states that the total pressure exerted by the mixture of non-reactive gases is equal to the

Critical temperature (T_C)of carbon dioxide is the highest temperature at which liquid carbon dioxide is observed. Above this temperature

Directions: The following question has four choices out of which ONLY ONE is correct.

Two molecules A and B have masses 100 kg and 64 kg, respectively and rate of diffusion of A is 12  10^-3. What will be the rate of diffusion of B?

Which of the following is the correct ideal gas law

Water has high surface tension and high capillarity because of

The temperature at which real gases obey the ideal gas laws over a wide range of pressure is called

According to __________ "equal volumes of all gases at the same temperature and pressure contain equal number of molecules."

What is the relation between total pressure and individual pressures before mixing the constituent gases at constant temperature?

Directions: The following question consists of an Assertion (A) and a Reason (R). Use the following to mark the appropriate answer.

(A): Under similar conditions of temperature and pressure, O₂ diffuses 1.4 times faster than SO₂.
(R): Density of SO₂ is 1.4 times greater than that of O₂.

At what temperature(s) are solids and liquids in equilibrium under 1 atm pressure?

The root mean square velocity of a gas becomes double when temperature is

What is the value of the gas constant R (expressed in L atm^oR^–1 mol^–1) at 32^oF if temperature is expressed on Rankine scale?

Two moles of H-atoms at NTP occupy a volume of

Which of the following volume (V) vs. temperature (T) plots represents one mole of an ideal gas at one atmospheric pressure?

The most probable velocity (in cm/sec) of hydrogen molecules at 27^oC will be

Directions: The following question has four choices out of which ONLY ONE is correct.

At a temperature of 30^oC, vapour pressure of water is 20 torr. If relative humidity is 45%, calculate the number of moles of water present in one litre of air at 30^oC.

Gases become ideal at

The temperature below which a gas becomes cooler on expansion, is called

Which of the following represents the units of the van der Waal's constant 'a'?

Increase in kinetic energy can overcome intermolecular forces of attraction. How will the viscosity of liquid be affected by the increase in temperature?

behaviour of the gas becomes more ideal when

Which of the following isobars  demonstrates Charle's Law ?

In the kinetic molecular theory attraction between molecules of the gas is

A reaction mixture for the combustion of SO₂ was prepared by opening a stop-cork separating two chambers, one with a volume of 4.25 L at 0.75 atm of SO₂ and the other with a 3.0 L volume filled at 0.5 atm of O₂. Both gases were at 80^oC. The mixture was passed over a catalyst that promoted the formation of SO₃ and then was returned to the two originally connected vessels. Conversion of SO₂ was completely subject to the availability of oxygen. Which of the following statements is true?

The volumes of ozone and chlorine diffusing during the same time are 35 ml and 29 ml, respectively. If the molecular weight of chlorine is 71, calculate the molecular weight of ozone.

Real gases show deviations from ideal gas law because

Avogadro's hypothesis states that

Which of the following gases is expected to have the largest value of van der Waals constant 'a'?

Surface tension decreases as the temperature is raised because increase in temperature