Occurrence of Elements in Nature

IMPORTANT

Occurrence of Elements in Nature: Overview

This topic covers concepts such as Metallurgy, Occurrence of Elements, Minerals and Ores, Oxide Ores, Sulphide Ores, Halide Ores, Nitrate Ores, Carbonate Ores, Oxy-Salt Ores, etc.

Important Questions on Occurrence of Elements in Nature

MEDIUM
IMPORTANT

Electrolytic reduction of alumina to aluminium by Hall-Heroult process is carried out

MEDIUM
IMPORTANT

Find the number of native ores out of the given ores:

pyrolusite, chromite, siderite, cassiterite, calamine, argentite, limestone, chalcopyrite.

EASY
IMPORTANT

Oxidation states of the metal in the minerals haematite and magnetite, respectively.

EASY
IMPORTANT

Which of the following salts is least likely to be found in minerals?

EASY
IMPORTANT

A number of elements are available in earth’s crust but most abundant elements are _____.

EASY
IMPORTANT

The name of the metal which is extracted from the ore is given below. Mark the example which is not correct.

MEDIUM
IMPORTANT

Which of the following examples is not correctly matched?

EASY
IMPORTANT

Which of the following is not the correct name of the formula of the ore given with it?

EASY
IMPORTANT

In which of the following the name of the ore is not matched with its formula?