The capacity of a spring to store energy is called the spring form co-efficient. Stiffness of a spring is measured by the________?

If two capillary tubes of dia 0.5 mm and 1 mm are dipped in a pot containing mercury, then the rise of mercury is________?

Noise level during normal conversation among men is about ________ decibels?

Presence of phosphorous in metallurgical coal________?

During manufacture of H2SO4, the oxidation of SO2 to SO3 by oxygen is an endothermic reaction. The yield of SO3 will be maximised, if the ________?

What is the value of ‘q’ for saturated vapor feed to a distillation column? (where q = fraction of the feed stream that is liquid?