General Princip...

Identify the metal $$M$$ whose extraction is based on the following reactions:
$$MS+2{ O }_{ 2 }\longrightarrow M{ SO }_{ 4 }$$
$$2MS+3{ O }_{ 2 }\longrightarrow 2MO+2S{ O }_{ 2 }$$
$$MS+2MO\longrightarrow 3M+S{ O }_{ 2 }$$
$$MS+M{ SO }_{ 4 }\longrightarrow 2M+2S{ O }_{ 2 }\quad $$

Which of the following is a non-metallic mineral?

In the silver plating of copper, K[Ag$$(CN)_2$$] is used instead of Ag$$NO_3$$. The reason is:

Gold paint is made from:

Match the columns.

Which of the following statements is correct about the role of collectors added during forth floatation process?

An excess of molybdenum in grassy areas results in poor growth of animals because it blocks the utilization of:

Carbon monoxide is naturally produced by oxidation of   X  , a gas present in swamp area while it can be produced by   Y     of fuels containing carbon.

Which of the following is a halide ore?

Sulphide ore of zinc/copper is concentrated by: