The decay product of tritium (a beta emitter) is________?

Saturated molal absolute humidity of the vapor-gas mixture depends upon the________?

A catalyst in a chemical reaction ________ free energy change in the reaction?

Quantity of coke oven gas produced by high temperature carbonisation of one ton of dry coal may be around ________ Nm3?

The main constituent of bones is ________?

In fluid flow, cavitation is caused, if the________?