Question

Metals found in free as well as combined states are

Solution

Correct option is

Gold and Silver

Gold and silver occurs in free as well as in combined states in nature.

SIMILAR QUESTIONS

Q1

Auto-reduction process is used in the extraction of

Q2

Among the following groups of oxides, the group containing oxides that cannot be reduced by carbon to give the respective metal is

Q3

van-Arkel method of purification of metals involves converting the metal to a

Q4

A metal which is refined by poling is

Q5

Wolframite ore is separate from tin stone ore by the process of

Q6

Pb and Sn are extracted from their chief ore by

Q7

‘Lapis-Lazuli’ is a blue coloured precious stone. It is mineral of the class

Q8

Gallium arsenide is purified by

Q9

Which of the following is correct?

Q10

By which of the following processes, the ore is made porous?