Plastics are____________________?
(A) Used in very high temperature applications
(B) Non-biodegradable
(C) Not suitable for drainage pipe manufacture
(D) All
SO3 is absorbed using H2SO4 in a____________________?
(A) Cast iron packed tower
(B) Stainless steel plate tower
(C) Packed steel tower lined with acid proof bricks
(D) None of these
Nitriding of steel is done (in electric furnace) at _____________ °C?
(A) 510
(B) 1720
(C) 2210
(D) 910
Brass is an alloy of____________________?
(A) Nickel and tin
(B) Copper and zinc
(C) Tin and lead
(D) Copper, nickel and zinc
A hardened steel essentially contains___________________?
(A) Sorbite
(B) Troostite
(C) Martensite
(D) None of these
Silicone rubber is not resistant to the corrosive action of____________________?
(A) Sulphuric acid (10%)
(B) Sulphuric acid (95%)
(C) Ether
(D) Both
The fermenter used in the production of penicillin (by deep fermentation process) is made of___________________?
(A) Glass
(B) Glass lined steel
(C) High silicon cast iron
(D) Porcelain
The heat treatment process applied to cold formed steel parts is ____________________?
(A) Normalising
(B) Tempering
(C) Artificial ageing
(D) Solution annealing
Shock resisting steels should possess high___________________?
(A) Hardness
(B) Toughness
(C) Tensile strength
(D) Wear resistance
Out of the following, copper vessels are the most suitable for the storage of__________________?
(A) Bromine
(B) Dry chlorine & dry fluorine
(C) Nitric acid (95% and fuming)
(D) Phosphoric acid (95%) & sulphuric acid (95% and fuming)