Given : rms velocity of hydrogen at 300 K is 1.9 × 103 m/s . The rms velocity of oxygen at 1200 K will be
1.9 × 103 m/s
3.8 × 103 m/s
0.95 × 103 m/s
0.475 × 103 m/s
Equal weights of CH4 and H2 are mixed in a container at 25oC. Fraction of total pressure exerted by methane is
1/2
1/3
1/9
8/9
The units of constants a in van der Waal's equation is
dm6 atm mol-2
dm3 atm mol-1
dm atm mol-1
atm mol-1
The liquified metal, which expands on solidification, is
Ga
Al
Zn
Cu
