Short Answer TypeNitrogen and chlorine have the same electronegativity but only former shows intermolecular hydrogen bonding. Discuss.
Long Answer TypeGive reasons for the following:
(i) The density of water is maximum at 277 K (4°C).
(ii) Why glycerol (glycerine) is more viscous than ethyl alcohol?
Short Answer TypeCalcualte the total pressure in a mixture of 8 g of dioxygen and 4 g of dihydrogen confined in a vessel of 1 dm3 at 
. R = 0.083 bar dm3 K-1 mol-1.
A mixture of dihydrogen and dioxygen at one bar pressure contains 20% by weight of dihydrogen. Calculate the partial pressure of dihydrogen.
Multiple Choice QuestionsWhich among the following gases can be liquified easily?
Chlorine
Nitrogen
Oxygen
Hydrogen
A.
Chlorine
A gas can be liquified when its temperature is below critical temperature, by cooling or compressing it. Gases which have high critical temperatures (such as Cl2, NH3, CO2, SO2 etc.,) can be liquified by applying a suitable pressure alone. Permanent gases (such as H2, N2, O2 etc.) cannot be liquified by the action of pressure and cooling.
If average velocity of a sample of gas molecules at 300 K is 5 cm s-1, what is RMS velocity of same sample of gas molecules at the same temperature? (Given, α: u: v = 1:1.224: 1.127)
6.112 cm/s
4.605 cm/s
4.085 cm/s
5.430 cm/s
Switch
