6930Chemical EngineeringMedium
Condensation polymerisation of formaldehyde with ________ does not produce phenolic resin?
AResorcinol
BMelamine
CPhenol
DPara-cresol
Correct answer
B. Melamine
Explanation
The correct answer is Melamine.
Correct answer
B. Melamine
Explanation
The correct answer is Melamine.
The viscosity of water at room temperature may be around one ________?
A reduction process is accompanied with increase in the________?
Which of the following has a very high carbide forming tendency in steels?
White phosphorous is stored under water, because ________?
Straight run naphtha is converted into high octane number petrol (gasoline) by catalytic________?
Deacon’s method is used for the manufacture of________?