Absolute zero is defined as the temperature:
at which all molecular motion ceases.
at which liquid helium boils.
at which ether boils.
All of the above.
In van der Waals' equation of state for a non - ideal gas, the term that accounts for inter molecular forces is:
(V - b )
(RT)-1
RT
The constant the temperature in a given mass of an ideal gas:
the ratio of pressure and volume always remains constant.
volume always remains constant.
pressure always remains constant.
the product of pressure and volume always remains constant.
In a closed flask of 5 L, 1.0 g of H2 is heated from 300 to 600 K. Which statement is not correct?
Pressure of the gas increases
The rate of collision increases
The number of moles of gas increases
The energy of gaseous molecules increases
On doping Ge metal with a little of In or Ga, one gets:
p - type semiconductor
insulator
n - type semiconductor
rectifier
The correct value of the gas constant 'R' is close to:
0.082 L-atm K
0.082 L-atm K-1 mol-1
0.082 L-atm-1 K mol-1
0.082 L-1 atm -1 K mol
The number of atoms contained in a fcc unit cell of a mono atomic substance is:
1
2
4
6
