The mean free path ($\mathrm{\lambda }$) of a gas sample is given by:

(1) $\lambda =\sqrt{2}\pi {\sigma }^{2}N$

(2) $\lambda =1/\sqrt{2}\pi {\sigma }^{2}N$

(3) $\lambda =\sqrt{2}\pi \mu {\sigma }^{2}N$

(4) none of these

Concept Questions :-

Kinetic Theory of Gas
NEET 2021 - Achiever Batch - Aryan Raj Singh

Difficulty Level:

Which is lighter than dry air?

(1) Moist air

(2) SO2

(3) Cl2

(4) O2

Concept Questions :-

Introduction to States of Matter
NEET 2021 - Achiever Batch - Aryan Raj Singh

Difficulty Level:

The ratio a/b (the terms used in van der Waals' equation) has the unit:

(1) atm lire mol-1

(2) atm dm3 mol-1

(3) dyne cm mol-1

(4) all of these

Concept Questions :-

Vanderwaal Correction
NEET 2021 - Achiever Batch - Aryan Raj Singh

Difficulty Level:

In the vander Waals' equation, the constant 'a' and 'b' with temperature shows which trend:

(1) both remains same

(2) 'a' remains same, 'b' varies

(3) 'a' varies, 'b' remains same

(4) both varies

Concept Questions :-

Vanderwaal Correction
NEET 2021 - Achiever Batch - Aryan Raj Singh

Difficulty Level:

At relatively high pressure, van der Waals' equation reduces to:

(1) PV = RT

(2) PV = RT + a/v

(3) PV = RT + Pb

(4) PV = RT - a/V2

Concept Questions :-

Vanderwaal Correction
NEET 2021 - Achiever Batch - Aryan Raj Singh

Difficulty Level:

When is the deviation more in the behaviour of a gas from the ideal gas equation pV=nRT?

(1) AT high temperature and low pressure

(2) At low temperature and high pressure

(3) At high temperature and high pressure

(4) At low temperature and low pressure

Concept Questions :-

Kinetic Theory of Gas
NEET 2021 - Achiever Batch - Aryan Raj Singh

Difficulty Level:

Joule-Thomson coefficient ($\partial \mathrm{T}/\partial \mathrm{P}$)H for an ideal gas is:

(1) zero

(2) +ve

(3) -ve

(4) none of these

Concept Questions :-

Liquefaction of Gases
NEET 2021 - Achiever Batch - Aryan Raj Singh

Difficulty Level:

All the three states H2O, i.e., the triple point for H2O the equilibrium,

Ice $⇌$Water$⇌$Vapour exist at:

(1) 3.85 mm and 0.0981 $°$C

(2) 4.58 mm and 0.0098 $°$C

(3) 760 mm and 0$°$C

(4) none of the above

Concept Questions :-

Liquefaction of Gases
NEET 2021 - Achiever Batch - Aryan Raj Singh

Difficulty Level:

The unit of van der Waals' constant 'a' is:

(1) atm litre2 mol-2

(2) dyne cm4 mol-2

(3) newton m4 mol-2

(4) all of these

Concept Questions :-

Vanderwaal Correction
NEET 2021 - Achiever Batch - Aryan Raj Singh

Difficulty Level:

The unit of van der Waals' constant 'b' is :

(1) cm3 mol-1

(2) litre mol-1

(3) m3 mol-1

(4) all of these

Concept Questions :-

Vanderwaal Correction