Related Questions

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
Chronic deficiency deficiency of vitamin 'C' may causes - 
A Scurvy
B Beriberi
C Xeropthalmia
D Night blindness
E Delay wound healing
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
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
Protection of ship hulls against sea water corrosion is done by coating with zinc because of the fact that zinc compared to iron is
A Reduced preferentially
B Cheaper
C Oxidised preferentially
D Lighter
Galvanising is not a zinc diffusion process. A zinc diffusion process is termed as
A Sheradising
B Parkerising
C Anodising
D None of these
Important features of zinc deficiency are
A Perioral ulceration
B Mental retardation
C Diarrhoea
D Raw beef tongue
E Hypoproteinemia
Deficiency of -----causes Goiter.
A Iodine
B Peotein
C Vitamin C
D Vitamin A
Deficiency of ------- causes loss of appetite and poor growth.
A Zine
B iodine
C copper
D iron
Deficiency of ---- causes loss of appetite and poor growth.
A zinc
B iodine
C copper
D iron

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