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Chemistry of Ores and Metals


1. 

which of the following is true?

Answer : D. All ores are minerals

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2. 

Sulphide ores are concentrated by

Answer : A. Froth floatation

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3. 

The ore of manganese is

Answer : D. Pyrolusite

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4. 

Metal ore, galena contains

Answer : C. lead

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5. 

Which metal does not form amalgam?

Answer : A. Fe

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6. 

Match List I correctly with List II and select your answer using the codes given below:

List I List II
a) Hypo 1) Silica
b) Quartz 2) THiosulphate
c) Brine 3) Aluminium ore
d) Bauxite 4) Sodium chloride

Answer : A. 2 1 4 3

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