A. Silica
B. Tar-dolomite
C. Low thermal conductivity
D. Fire clay
Coke oven walls are lined with _____________ bricks? Read More »
Materials and Construction A. Least active
B. Most stable
C. Most active
D. Most noble
Metal at the top of the electromotive series is________________? Read More »
Materials and Construction A. Cast iron vessels
B. Steel cylinders
C. Aluminium containers
D. Monel drums
Hydrocyanic acid is not shipped in______________? Read More »
Materials and Construction A. Sulphuric acid (10%) at room temperature
B. Nitric acid (95%) at room temperature
C. Sulphur trioxide at 60°C
D. Any of these
Polythene (low or high density) containers are not corroded by___________________? Read More »
Materials and Construction A. Calorising
B. Galvanising
C. Zincification
D. Tempering
A. Lead lined concrete vessel
B. Wood
C. Metal
D. Either B. or C.
Trough of an apron conveyor is made of___________________? Read More »
Materials and Construction A. Utensil manufacture
B. Electrical industry
C. Industrial equipment manufacture
D. Small scale industries
Maximum consumption of copper is in__________________? Read More »
Materials and Construction A. Charcoal
B. Calcium carbide
C. Hydrocarbon oil
D. Graphite
Carbon supply in pack carburising process is in the form of_____________________? Read More »
Materials and Construction A. Freon
B. H2SO4 (95%) at room temperature
C. H2SO4 (fuming)
D. Wet SO2
Cast iron vessels are not suitable for the storage of_________________? Read More »
Materials and Construction A. Steel
B. Cast iron
C. Stainless steel
D. Wrought iron
Which has the maximum melting point out of the following ? Read More »
Materials and Construction