3041Chemical EngineeringMedium
Drills are usually made of________?
ATungsten carbide
BHigh speed steel
CAlloy steel
DCermets
Correct answer
B. High speed steel
Explanation
The correct answer is High speed steel.
Correct answer
B. High speed steel
Explanation
The correct answer is High speed steel.
High refractoriness of refractory bricks means, that it has a________?
For removal of very small amounts of precipitate from large volume of water, the most suitable filter is the ________ filter?
A high vapour velocity is required for high plate efficiency in a sieve plate column. The satisfactory value of operating vapor velocity for design purpose in sieve plate column is about ________ percent of the flooding velocity?
In contact process, SO3 is absorbed in 97% H2SO4 and not in water, because________?
Bristles of tooth brushes are made of________?
________ is a polysaccharide?