Correct answer
A. None of these
Explanation
The correct answer is None of these.
‘Six-tenth factor’ rule is used for estimating the________?
The passage between the nozzle and the ________ is called ‘sprue’ in case of injection moulding?
Most commonly used crude heater before the fractionation tower in a refinery is the ________ heater?
The actual temperature drop across the heating surface in an evaporator depends on the________?
Which of the following processes is involved in the biochemical treatment of sewage effluents?
Gross and net calorific value of a fuel will be the same________?