Cast iron and steel pipes are produced by ____________ casting?
A. Die
B. Investment
C. Slush
D. True centrifugal
Materials and Construction
Urea autoclave is made of_________________?
Urea autoclave is made of_________________?
A. Cast iron
B. Refractory blocks
C. Stainless steel
D. Lead lined steel
Aqueous nitric acid is stored in________________?
Aqueous nitric acid is stored in________________?
A. Steel drum
B. Stainless steel vessel
C. Cast iron vessel lined with acid-proof masonry brick
D. Cast iron vessel
Brinell Hardness Number (BHN) for talc is approximately in the range of____________________?
Brinell Hardness Number (BHN) for talc is approximately in the range of____________________?
A. 1-5
B. 20-30
C. 100 -150
D. 200 – 250
Invar contains the highest percentage of___________________?
Invar contains the highest percentage of___________________?
A. Vanadium
B. Iron
C. Tungsten
D. Cobalt
Percentage of silver in German silver is__________________?
Percentage of silver in German silver is__________________?
A. 5
B. 10
C. 20
D. 0
Which of the following is not used as the ceramic material in „cermets‟?
Which of the following is not used as the ceramic material in „cermets‟?
A. Silicides
B. Oxides
C. Carbides
D. Nitrides
Brine (15% concentration) can be stored in a vessel made of____________________?
Brine (15% concentration) can be stored in a vessel made of____________________?
A. Monel
B. Karbate
C. Cast iron
D. None of these
Addition of tungsten to steel imparts___________________?
Addition of tungsten to steel imparts___________________?
A. Magnetic properties
B. Cutting hardness
C. Corrosion resistance
D. Ductility
_____________ steel is widely used for the manufacture of motor car crankshafts?
_____________ steel is widely used for the manufacture of motor car crankshafts?
A. Silicon
B. Nickel
C. Chrome
D. High speed