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Punjabi language 100 Questions

Thursday, 5 November 2015

Metal, alloys and ores for exam

Important About Metal and Alloys

act to remember
Name of the metal
Metal most abundant in earth’s crust
Aluminium
Metal which forms amalgam with other elements
Mercury
Metal used in a fuse wire and also in solder
Lead-tin alloy
Metal used in the filament of a bulb
Tungsten
Metal which pollutes the air of cities having large number of vehicles
Lead (reason for using unleaded petrol)
Metal used in the filaments of electric heaters
Nichrome
Metal used as radiation shield
Lead
Metal into which Uranium turns when it loses all its radioactivity
Lead
Metal used for making boats because it does not corrode by seawater
Titanium

Important Alloys
Alloy
Combination of
Duralumin
Aluminium and Copper
Brass
Copper and Zinc
Bronze
Copper and Tin
Invar
Iron and Nickel
Stainless steel
Iron, Chromium and Nickel
German Silver
Copper, Nickel and Zinc
Gunmetal
Copper, Tin and Zinc
Solder
Lead and Tin
Electrum
Gold and Silver
Constantan
Copper and Nickel
Manganin
Copper, Manganese and Nickel
Manganin is a trademarked name.

Ores of Metals
Metal
Ore
Aluminium
Bauxite
Beryllium
Beryl
Chromium
Chromite
Cobalt
Cobaltite
Copper
Bornite, Chalcocite
Gold
Quartz
Iron
Magnetite
Lead
Galena
Manganese
Pyrolusite
Mercury
Cinnabar
Nickel
Pentlandite
Tin
Casseterite
Tungsten
Wolframite, Scheelite
Silver
Argentite
Uranium
Uraninite
Zinc
Sphalerite

Metals
Feature
Metal
The metal with highest melting point
Tungsten
The metal with highest thermal conductivity
Silver
The metal with highest electrical conductivity
Silver
The metal with highest density
Osmium
The metal with the lowest density
Lithium
The most malleable and ductile metal
Gold
The metal with the highest melting point
Tungsten
The least reactive metal
Platinum

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