The atomic weight of helium is 4 times that of hydrogen. Its diffusion rate as compared to hydrogen will be _____________ times?

Related Mcqs:

The reaction A + B → C has been conducted in a reactor as shown below. The number of boundaries around which material balance can be written, are_________________?

A. 1 B. 6 C. 3 D. 4...

Heat of neutralisation of a strong acid and strong base is always a constant value, i.e., 57 KJ/Kg mole. This is because_________________?

A. The strong base and strong acid reacts completely B. The salt formed does not hydrolyse C. Only OH- and H+ ions react in every case D. The strong base and strong acid reacts in aqueous solution...

Addition of a non-volatile solute to a solvent produces a ______________ in its solvent?

A. Freezing point elevation B. Boiling point depression C. Vapor pressure lowering D. All A., B. & C....

The vapour pressure of water is given by, in Psat = A – (5000/T), where A is a constant, Psat is the vapour pressure in atm. and T is the temperature in K. The vapor pressure of water in atm. at 50°C is approximately__________________?

A. 0.07 B. 0.09 C. 0.11 D. 0.13...

Atmospheric pressure corresponds to a hydrostatic head of_________________?

A. 13.6 cms of Hg B. 34 ft ofH2O C. 1 metre of H2O D. 13.6 metres of Hg...