Occurrence of Metals

IMPORTANT

Occurrence of Metals: Overview

This topic covers concepts such as Oxide Ores, Sulphide Ores, Halide Ores, Carbonate Ores, Metallurgical Process, Occurrence of Elements, Minerals and Ores, Nitrate Ores, Oxy-Salt Ores, Gangue or Matrix, and Pulverisation.

Important Questions on Occurrence of Metals

MEDIUM
IMPORTANT
Chemistry>General Principles and Processes of Isolation of Elements>Occurrence of Metals> Q 1

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

HARD
IMPORTANT
Chemistry>General Principles and Processes of Isolation of Elements>Occurrence of Metals> Q 2

Among the following statements, the incorrect one is 

EASY
IMPORTANT
Chemistry>General Principles and Processes of Isolation of Elements>Occurrence of Metals> Q 3

Casseterite is ore of

MEDIUM
IMPORTANT
Chemistry>General Principles and Processes of Isolation of Elements>Occurrence of Metals> Q 4

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

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

EASY
IMPORTANT
Chemistry>General Principles and Processes of Isolation of Elements>Occurrence of Metals> Q 5

Explain briefly about pulverization.

EASY
IMPORTANT
Chemistry>General Principles and Processes of Isolation of Elements>Occurrence of Metals> Q 6

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

EASY
IMPORTANT
Chemistry>General Principles and Processes of Isolation of Elements>Occurrence of Metals> Q 7

Which of the following is magnetite?

EASY
IMPORTANT
Chemistry>General Principles and Processes of Isolation of Elements>Occurrence of Metals> Q 8

Which of the following is not a carbonate ore?

EASY
IMPORTANT
Chemistry>General Principles and Processes of Isolation of Elements>Occurrence of Metals> Q 9

Which one of the following is not a sulphide ore?

EASY
IMPORTANT
Chemistry>General Principles and Processes of Isolation of Elements>Occurrence of Metals> Q 10

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

EASY
IMPORTANT
Chemistry>General Principles and Processes of Isolation of Elements>Occurrence of Metals> Q 11

Which of the following is not an ore of magnesium?

MEDIUM
IMPORTANT
Chemistry>General Principles and Processes of Isolation of Elements>Occurrence of Metals> Q 12

Which of the following examples is not correctly matched?

EASY
IMPORTANT
Chemistry>General Principles and Processes of Isolation of Elements>Occurrence of Metals> Q 13

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

EASY
IMPORTANT
Chemistry>General Principles and Processes of Isolation of Elements>Occurrence of Metals> Q 14

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

MEDIUM
IMPORTANT
Chemistry>General Principles and Processes of Isolation of Elements>Occurrence of Metals> Q 15

Galena is an ore of_____.

MEDIUM
IMPORTANT
Chemistry>General Principles and Processes of Isolation of Elements>Occurrence of Metals> Q 16

Which of the following is a carbonate ore?

EASY
IMPORTANT
Chemistry>General Principles and Processes of Isolation of Elements>Occurrence of Metals> Q 17

Write the names of any two ores of iron?

MEDIUM
IMPORTANT
Chemistry>General Principles and Processes of Isolation of Elements>Occurrence of Metals> Q 18

List the three metals that are found in nature as oxide ores.

EASY
IMPORTANT
Chemistry>General Principles and Processes of Isolation of Elements>Occurrence of Metals> Q 19

NaCN acts in froth-floatation as a _____.

MEDIUM
IMPORTANT
Chemistry>General Principles and Processes of Isolation of Elements>Occurrence of Metals> Q 20

The molecular formula of galena is _____.