CBSE
Multiple Choice QuestionsThe compressibility factor (Z) of one mole of a van der Waals' gas of negligible 'a' value is
1
Four gases P, Q, R and S have almost same values of 'b' but their 'a' values (a, b are van der Waals' constants) are in the order Q < R < S < P. At a particular temperature, among the four gases, the most easily liquefiable one is
P
Q
R
S
The value of H for cooling 2 mole of an ideal monoatomic gas from 225°C to 125°C at constant pressure will be [given Cp = ].
250 R
-500 R
500 R
-250 R
Short Answer TypeCalculate the ratio of the rate of diffusion of oxygen to the rate of diffusion of hydrogen at constant temperature and pressure.
Multiple Choice QuestionsThe compressibility factor of an ideal gas is :
1
2
4
0
Unusually high boiling point of water is result of
intermolecular hydrogen bonding
intramolecular hydrogen bonding
both intra and inter molecular hydrogen bonding
high specific heat
Which of the following compounds shows evidence of the strongest hydrogen bonding?
Propan-1-ol
Propan-2-ol
Propan-1,2-diol
Propan-1,2,3-triol
At identical temperature and pessure, the ratio of diffusion of hydrogen gas is times that of a hydrocarbon having molecular formula CnH2n-2. What is the value of 'n'?
1
4
3
8
Maximum deviation from ideal gas is expected from
H2(g)
N2(g)
CH4(g)
NH3(g)
The rms velocity of an ideal gas at constant pressure varies with density (d) as
d
d2
