Which of the following is not a pyrite ore ?

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Extraction of _________________ employs an electrolytic process ?

A. Aluminium B. Silver C. Copper D. All A, B. and C...

Hydrocyanic acid (HCN) is used as an insecticide for____________________?

A. Controlling timber degradation by ants B. Controlling poultry lice C. Potato beetle D. Citrus fruits...

Thermosetting plastic materials____________________?

A. Can be repeatedly melted B. Is useful for melt casting C. Cannot be melted after forming D. Is useful for spinning...

Which is the main reducing agent during production of iron from iron ore in a blast furnace ?

A. C B. CO C. CO2 D. H2...

Sucrose content in the raw juice extracted from sugar cane is about _________________ percent?

A. 1 – 2 B. 15 – 20 C. 50 – 60 D. 80 – 85...