Correct answer
B. Zinc or magnesium
Explanation
The correct answer is Zinc or magnesium.
About 2-3 hp, power per gallon of a thin liquid provides vigorous agitation in an agitator. ‘Power number’ in agitation is given by ________?
Liquid gradient over a tray can be minimised by________?
Epoxy resin is________?
‘Age hardening’ of duralumin is due to________?
Hydrogen content in petroleum products varies from 12 to 15% (by weight). As a result the difference between gross and net heating value of petroleum fuels varies in the range of ________ kcal/kg?
A barometer measures the ________ pressure?