Chemistry

Which metal is obtained by the 'Cyanide Process'?

The most common reducing agent used in the blast furnace for iron extraction is:

What is the chemical formula of Malachite?

Which method is used to separate Galena (PbS) from Zinc Blende (ZnS)?

Which of the following is an example of an acidic flux?

Matte is a mixture of:

Which of the following metals exhibits the phenomenon of 'Passivity' when treated with conc. HNO3?

The chief ore of Zinc is:

How many atoms of Iron are there in one molecule of Magnetite?

Which of the following metals has the highest melting point?

Type metal, used in printing, is an alloy of:

What is the oxidation state of Iron in Fe3O4?

Which metal is used to protect iron from rusting by the method of 'Sacrificial Protection'?

The most common ore of Magnesium found in sea water is:

The purity of gold is expressed in Karats. 24 Karat gold is:

Which metal is used as a 'getter' in vacuum tubes to remove traces of oxygen?

In the extraction of Iron, the temperature in the Hearth (bottom part of the blast furnace) is approximately:

What is the density of CO2 relative to air?

What is the atomic number of carbon?

Which of the following is the hardest natural allotrope of carbon?