203) The molecular mass of a substance is the number of times a molecule of that substance is heavier than the hydrogen atom.

204) The behaviour of super-heated vapour is similar to that of

205) Briquetted coal is produced from the finely ground coal by moulding under pressure with or without a binding material.

206) Which of the following is a reversible non-flow process?

207) If in the equation pvⁿ = C, the value of n = infinity , then the process is called