Correct answer
D. Both A. & B.
Explanation
The correct answer is Both A. & B..
Nickel is not used as a catalyst in the ________ reaction?
In “Imperial Smelting Process” for extraction of zinc, zinc vapour thus produced is quenched in the external condenser by the use of the following ________?
Hot & cold working of material causes its ________ deformation?
Hole diameter of the sieve trays in the distillation column ranges from ________ mm?
Pick out the wrong statement?
‘Utilities’ in a chemical process plant includes compressed air, steam, water, electrical power, oxygen, acetylene, fuel gases etc. Utility costs for ordinary chemical process plants ranges roughly from ________ percent of the total product cost?