As the reflux ratio, in a continuous counter-current extraction is increased, the number of stages________?

Heat balance of furnace provides means of determining the________?

Extremely large or small volumes of fluids are generally best routed through the shell side of a shell and tube heat exchanger, because of the________?

Feed size of ≥ 25 cms can be accepted by ________?

The heat evolved in the combustion of benzene is represented by the equation: C6H6 + 7.5 O2 = 6CO2 + 3H2O, ΔH = 3264.6 kJ/kg. mole The heat energy change, when 39 gm of C6H6 is burnt in an open container, will be ________ kJ/kgmole?

Isotopes of an element have different________?