Related Questions

100 kg of solution A is mixed with 60 kg of solution B . If solution A has tin and copper in the ratio 1: 4 and solution B has lead and tin in the ratio 3 :2 then what is the amount of tin in the new solution?
A 70 kg
B 36 kg
C 44 kg
D 56 kg
Tin coating is not done by
A Vaporising
B Hot dipping
C Electro deposition
D Spraying
e-TIN 46-(e-TIN was introduced in -)
A 2020
B 2003
C 1992
D 2013
Tin base and lead base alloys are used for bearing materials. Tin compared to lead has lower
A Price
B Corrosion resistance
C Thermal conductivity
D Abundant availability
Among the tin containing alloys, __________ consumes the maximum amount of tin.
A Solder
B White metal
C Pewter matal
D Bronzes
Tin based white metals are used, where bearings are subjected to
A High pressure & load
B Low pressure & load
C High temperature
D Large surface wear
Which of the following metals in not used for coating of the base metal to guard it against corrosion?
A Lead
B Cadmium
C Magnesium
D Aluminium
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 (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
There are thirteen metals which are treated as pollutants. Which of the following metals is not a pollutant?
A Mercury
B Arsenic
C Aluminium
D Lead

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