Related Questions

Galvanising (i.e., zinc coating) of steel sheets is done to
A Prevent its rusting by contact with corrosive atmosphere
B Protect the base metal by cathodic protection
C Both A & B
D Neither A nor B
Generally __________ are subjected to galvanising (i.e., zinc coating).
A Non-ferrous metals
B Non-metals
C Low carbon steels
D Stainless steel
Galvanising is generally done on
A Non-ferrous metals
B Low carbon steel
C Stainless steel
D Cast iron
The main purpose of galvanising iron sheets is to
A Harden the surface
B Increase its glossiness and lustre
C Prevent the action of water
D Prevent the action of oxygen
The metal chiefly used for galvanising iron is :
A Zinc
B Mercury
C Cadmium
D Tin
Galvanising means covering iron with a thin coat of
A Tin
B Zinc
C Glaze
D Coal tar
If 2 kg of metal, of which 1/3 is zinc and the rest is copper s, be mixed with 3 kg of metal , of which 1/4 is zinc and the rest is copper , then what will be the ratio of zinc to copper in the mixture?
A 13 : 42
B 19 : 43
C 15 : 42
D 17 : 43
In "Imperial Smelting Process" for extraction of zinc, zinc vapour thus produced is quenched in the external condenser by the use of the following :
A Jet of water at high pressure
B Blast of air
C Mixture of water and air
D Rain of molten lead
A zinc diffusion process is called
A Galvanizing
B Anodizing
C Parkerising
D Sherardizing
If 2 kg of metal, of which 1/3 is zine and the rest is copper , be mixed with 3 kg of metal, of which 1/4 is zinc and the rest is copper , then what will be the ratio of zinc to copper in the mixture?
A 17 : 43
B 13 : 42
C 19 : 43
D 15 : 42

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