In a closed flask of 5 L, 1.0 g of H2 is heated from 300 to 600K. 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
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
If p, V, M, T and R are pressure, volume, molar mass, temperature and gas constant respectively, then for an ideal gas, the density is given by
Correct gas equation is
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 pressure of a gas is generally measured by a simple device known as
hygrometer
manometer
barometer
thermometer
At constant temperature, in a given mass of a 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
The root mean square speeds at STP for the gases H2, N2, O2 and HBr are in the order
H2 < N2 < O2 < HBr
HBr < O2 < N2 < H2
H2 < N2 = O2 < HBr
HBr < O2 < H2 < N2
Root mean square velocity of a gas molecule is proportional to
m½
m0
m-½
m
Most crystals show good cleavage because the atoms, ions or molecules are
Weakly bonded together
Strongly bonded together
Spherically symmetrical
arranged in planes
