Rate of diffusion of a gas is ________

(a)

directly proportional to its density

(b)

directly proportional to its molecular weight

(c)

directly proportional to its square root of its molecular weight

(d)

inversely proportional to the square root of its molecular weight

The value of universal gas constant depends upon __________

(a)

Temperature of the gas

(b)

Volume of the gas

(c)

Number of moles of the gas

(d)

units of Pressure and volume.

Pressure is _____________

(a)

Force/ area

(b)

force x Area

(c)

Area/ force

(d)

Force / area \(\times\) volume

The hydrogen balloon was invented by ______________

(a)

Robert Boyle

(b)

J.A.C. Charles

(c)

Maxwell

(d)

Gay Lussac

The rate of diffusion of gas is  _________ to square root of their molecular mass.

(a)

inversely proportional

(b)

directly proportional

(c)

equal

(d)

twice

Compression factor Z is given by _____________

(a)

PV/nRT

(b)

P/nRT

(c)

PV/R

(d)

PV/T

Pick out the correct relation for 1 mole of real gas.

(a)

\(\left( P+\frac { V }{ { a }^{ 2 } } \right) (V-b)=RT\)

(b)

\(P=\frac { RT }{ (V-b) } +\frac { a }{ { V }^{ 2 } } \)

(c)

\(\left( P+\frac { a }{ { V }^{ 2 } } \right) (V-b)=RT\)

(d)

\(\left( P-\frac { a }{ { V }^{ 2 } } \right) (V+b)=\frac { 1 }{ RT } \)

Maximum deviations from ideal gas is expected from ___________

(a)

H₂(g)

(b)

N₂(g)

(c)

CH₄(g)

(d)

NH₃(g)

Gas equation PV = nRT is obeyed by __________

(a)

only isothermal process

(b)

only adiabatic process

(c)

both (a) and (b)

(d)

none of the above

Suppose there is a tiny sticky area on the wall of a container of gas. Molecules hitting this area stick there permanently. Is the pressure greater or less than on the ordinary area of walls?

Why do astronauts have to wear protective suits when they are on the surface of moon?

Why are the airplane cabins artificially pressurized?

According to kinetic theory. What are the two assumptions made with regard to ideal gas?

Define rate of diffusion

Which of the following gases would you expect to deviate from ideal behaviour under conditions of low temperature F₂, Cl₂ or Br₂? Explain.

Give the graphical representation of Boyle's law.

In the below figure, let us find the missing parameters [volume in (b) and temperature in (c)]
P_I = 1 atm, P₂ = 1 atm, P₃ = 1 atm
V₁ = 0.3 dm³, V₂ = ? dm³, V₃ = 0.15 dm³
T₁ = 200 K, T₂ = 300 K, T₃ = ? K.

Explain the graphical representation of Charles law.

What is meant by Boyle temperature (or) Boyle point? How is it related with compression point?

Explain whether a gas approaches ideal behavior or deviates from ideal behaviour if
it is compressed to a smaller volume at constant temperature.

Derive the expression between P_total and Partial pressure of a gas.

Inside a certain automobile engine, the volume of air in a cylinder is 0.375 dm³, when the pressure is 1.05 atm. When the gas is compressed to a volume of 0.125 dm³ at the same temperature, what is the pressure of the compressed air?