CBSE
Volume versus temperature graphs for a given mass of an ideal gas are shown in figure. At two different values of constant pressure, what can be inferred about relation between p1 and p2 ?
p1 > p2
p1 = p2
p1 < p2
data is insufficient
At what temperature will the rms speed of air molecules be double that NTP ?
519° C
619° C
719° C
819° C
The equation of state for n moles of an ideal gas is pV = nRT, where R is a constant. The SI unit for R is
Jk-1 per molecule
JK-1 mol-1
JKg-1K-1
Jk-1g-1
For molecules of a gas have speeds 1, 2, 3 and 4 km/s. The value of the root mean square speed of the gas molecules is
2.5 km/s
The rms speed of oxygen is v at a particular temperature. If the temperature is doubled and oxygen molecules dissociate into oxygen atoms, the rms speed becomes
v
2 v
4 v
One mole of an ideal monoatomic gas is heated at a constant pressure from 0°C to 100°C. Then the change in the internal energy of the gas is (Given, R = 8.32 J mol-1 K-1)
0.83 × 103 J
4.6 × 103 J
2.08 × 103 J
1.25 × 103 J
Determine the mean free path of argon molecules under normal condition knowing that the molecule diameter is 0.4 nm.
48 nm
60 nm
52 nm
71 nm
Six molecules speeds 2 unit, 5 unit, 3 unit, 6 units, 3 unit and 5 unit respectively. The rms speed is
4 unit
1.7 unit
4.2 unit
5 unit