1.

Mentionthe Properties of Metals ?

Answer»

Solution :PHYSICAL properties of metals are :
i) Metals are usually hard.
ii) They are Sonorous,
III) They are lustrus
iv) Metals exhibit malleability and ductility
v) They exhibit high tensil strength and have high densities:
Roasting :It is a process in which sulphide ore is HEATED in the presence of oxygen to convert into oxide
`2Zns-3O to 2ZnO + 2SO_2`
Calcination : It is a process in which carbonate ore in heated in the ABSENCE of air of form OXIDES.
`ZnCO_(3(s)) overset("heat")to ZnO_((s)) + CO_2`
By reduction process Zn can be extracted from its ore.
Reduction: `2ZnO+ C to ZnO + CO_2`


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