Correct answer
A. 250 to 500
Explanation
The correct answer is 250 to 500.
Thermit welding is categorised as the ________ welding?
A stirred tank reactor compared to tubular-flow reactor provides________?
Tube side pressure drop in a 1-2 heat exchanger (for turbulent flow of fluids through the tubes) is about ________ times, that in a 1-1 heat exchanger having the same size & number of tubes and operated at the same liquid flow rate?
Bomb calorimeter can be used to determine the ________ of the coal?
________ is the major constituent of the Portland cement?
Adiabatic compression of a saturated water vapour makes it ________?