4086Chemical EngineeringMedium
Petroleum is believed to have originated from ________ sources?
AAnimal
BBoth A. and B.
CNeither A. nor B.
DVegetable
Correct answer
B. Both A. and B.
Explanation
The correct answer is Both A. and B..
Correct answer
B. Both A. and B.
Explanation
The correct answer is Both A. and B..
The synthesis of proteins and metabolism in biological objects occur in the presence of biocatalyst called________?
Lead pipes are not safe for carrying drinking water because water containing dissolved oxygen attacks lead thereby forming poisonous Pb (OH)2. Lead pipes are readily corroded by________?
For coarse reduction of hard solids, use ________?
For experimental determination of mass transfer co-efficient by wetted wall tower, the mass transfer area is________?
The size of an atom is of the order of one ________?
Heat exchangers operating, when the asymptotic range is reached,?