Pipes for bi-cycle frames are made of ________ steel?

If the head is doubled in & centrifugal pump, the power required will increase in the ratio of________?

Molten ammonium nitrate is mixed with ground limestone in fertilizer plant in a________?

Stoichiometric combustion of 12 kg of carbon requires ________ of oxygen?

C.V. (kcal/Nm3) of gaseous fuels ________ with increase in molecular weight?

Which of the following equations is Rittinger’s crushing law? (Where P = power required by the machine, m = feed rate, k = a constant, D̅ sa & D̅ sb = volume surface mean diameter of feed & product respectively)?