Zinc is not used__________________?
(A) For producing zinc base die casting alloys
(B) In its oxide form as pigments
(C) As anode for corrosion prevention in boiler
(D) As an alloying element in various bronzes
Concrete tank can be used to store________________?
(A) Alum
(B) Ferrous sulphate
(C) Sulphuric acid
(D) Saturated brine
Cast iron has very high___________________?
(A) Compressive strength
(B) Ductility
(C) Shock resistance
(D) Resistance to brittleness
Which of the following is not an alloy of nickel and chromium ?
(A) Inconel
(B) Hastelloy
(C) Nimonic alloys
(D) Duralumin
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____________________?
(A) 12
(B) 18
(C) 24
(D) 30
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___________________?
(A) Mild steel
(B) Cast iron
(C) Refractory blocks
(D) Stainless steel
Evaporators used in caustic soda recovery and production plant are made of_______________?
(A) Monel metal
(B) Gun metal
(C) Wood metal
(D) Babbitt metal
Sulphur melting pit in the sulphuric acid plant is made of__________________?
(A) Lead lined stainless steel
(B) Cast iron
(C) Steel or cement-brick lined
(D) Hard wood