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10 questions
A non metal used to preserve food material is:
The metals that float when treated with water are:
Mn and Ca
Mg and Ca
Na and Ca
Mg and Na
Which metal is liquid at room temperature
mercury
bromine
lithium
sodium
Process by which metal with high reactive series obtained
Electrolysis Reduction
Calcination
Reduction
Thermit reduction
Alloy in which one of the metal is mercury known as
Anode Mud
Amalgam
Ore
Gangue
Brass is a mixture of
Cu and Sn
Hg and C
Cu and Zn
None of these
The most abundant metal in the Earth's crust is
-- is an allotrope of carbon and is the hardest natural substance.
Galvanisation is a method of protecting iron from rusting by coating with a thin layer of
Gallium
Aluminium
Silver
Zinc
Which property of Gold makes it suitable for making electric wires?
Malleable
Good conductor of heat
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