2703Chemical EngineeringMedium
Porosity of silica bricks varies from ________ percent?
A60 to 75
B45 to 60
C20 to 30
D5 to 10
Correct answer
C. 20 to 30
Explanation
The correct answer is 20 to 30.
Correct answer
C. 20 to 30
Explanation
The correct answer is 20 to 30.
The ratio of maximum to average velocity in case of streamline flow between parallel plates is________?
Cementite is in the lamellar form in the ________ phase of steel?
Carbon refractories have very high ________?
The temperature of tempering oil baths maintained at 400°C during heat treatment of steel is measured by a/an ________ thermocouple?
Carbon refractory blocks ________?
Catalyst used in the production of high density polythene by low pressure Ziegler process is ________?