Which of the following is not an alloy of nickel and chromium ?
A. Inconel
B. Hastelloy
C. Nimonic alloys
D. Duralumin
Materials and Construction
The hardest material just prior to diamond in Mho’s scale is___________________?
The hardest material just prior to diamond in Mho’s scale is___________________?
A. Topaz
B. Carborundum
C. Corundum
D. Calcite
The maximum percentage of chromium that can be added to steel is about____________________?
The maximum percentage of chromium that can be added to steel is about____________________?
A. 12
B. 18
C. 24
D. 30
Residual magnetism in steel for magnets is increased by the addition of__________________?
Residual magnetism in steel for magnets is increased by the addition of__________________?
A. Nickel
B. Cobalt
C. Tungsten
D. Chromium
Tank furnace used for melting of glass is made of___________________?
Tank furnace used for melting of glass is made of___________________?
A. Mild steel
B. Cast iron
C. Refractory blocks
D. Stainless steel
The purpose of nitriding the steel is to___________________?
The purpose of nitriding the steel is to___________________?
A. Harden its surface
B. Soften its surface
C. Improve its reliability
D. None of these
Maximum consumption of zinc is in____________________?
Maximum consumption of zinc is in____________________?
A. Alloying
B. Galvanising
C. Utensil manufacture
D. Electrical industry
Which of the following crystal structures characterises the austenitic stainless steel ?
Which of the following crystal structures characterises the austenitic stainless steel ?
A. Simple hexagonal
B. Body centred cubic
C. Face centred cubic
D. None of these
Corrosion resistance of steel is increased by the addition of_________________?
Corrosion resistance of steel is increased by the addition of_________________?
A. Phosphorous and tungsten
B. Nickel and chromium
C. Lead and vanadium
D. Molybdenum and tungsten
Liquid ammonia is shipped in _____________ containers?
Liquid ammonia is shipped in _____________ containers?
A. Steel
B. Aluminium
C. Glass
D. Lead lined