Materials and Construction

A. Inconel
B. Hastelloy
C. Nimonic alloys
D. Duralumin

A. Topaz
B. Carborundum
C. Corundum
D. Calcite

A. 12
B. 18
C. 24
D. 30

A. Nickel
B. Cobalt
C. Tungsten
D. Chromium

A. Mild steel
B. Cast iron
C. Refractory blocks
D. Stainless steel

A. Harden its surface
B. Soften its surface
C. Improve its reliability
D. None of these

A. Alloying
B. Galvanising
C. Utensil manufacture
D. Electrical industry

A. Simple hexagonal
B. Body centred cubic
C. Face centred cubic
D. None of these

A. Phosphorous and tungsten
B. Nickel and chromium
C. Lead and vanadium
D. Molybdenum and tungsten

A. Steel
B. Aluminium
C. Glass
D. Lead lined