Chemical Engineering - Chemical Engineering Basics

31.
Addition of __________ to steel does not help in improving its machinability.
sulphur
silicon
lead
phosphorous
Answer: Option
Explanation:
No answer description is available. Let's discuss.

32.
Chalcopyrite is an ore of
lead
aluminium
copper
zinc
Answer: Option
Explanation:
No answer description is available. Let's discuss.

33.
The following is employed as sacrificial anode to provide cathodic protection to ships, pipelines and storage tanks.
Iron
Copper
Nickel
Magnesium
Answer: Option
Explanation:
No answer description is available. Let's discuss.

34.
Heat transfer by __________ is almost absent in case of fluidised bed drying operation.
radiation
conduction
convection
both (b) & (c)
Answer: Option
Explanation:
No answer description is available. Let's discuss.

35.
Increasing the carbon content of steel
reduces the upper shelf energy.
increasing the ductility transition temperature.
decreases brittleness.
decreases hardness.
Answer: Option
Explanation:
No answer description is available. Let's discuss.