Chemistry of Ores and Metals Tnpsc Question, Group 1 2 2a 4, VAO Group Question

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Chemistry of Ores and Metals

1.

which of the following is true?

A. A mineral cannot be an ore B. All minerals are ore C. All ores cannot be minerals D. All ores are minerals

Answer : D. All ores are minerals

2.

Sulphide ores are concentrated by

A. Froth floatation B. Hand picking C. Water cleaning D. Gravity seperation

Answer : A. Froth floatation

3.

The ore of manganese is

A. Pentlandite B. Bauxite C. Carninerite D. Pyrolusite

Answer : D. Pyrolusite

4.

Metal ore, galena contains

A. silver B. zinc C. lead D. magnesium

Answer : C. lead

5.

Which metal does not form amalgam?

A. Fe B. Cu C. Zn D. Ag

Answer : A. Fe

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

A. a-2 ,b-1,c-4 ,d-3 B. a-1 ,b-3 ,c-2 ,d-4 C. a-4 ,b-3 ,c-1 ,d-2 D. a-3 ,b-2 ,c-4 ,d-1

Answer : A. a-2 ,b-1,c-4 ,d-3

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