Question

What is found in sulphide ores?
A.Phosphorous
B.Bismuth
C.Antimony
D.Arsenic

Answer 1

Hint: Most of the metals are very reactive and cannot exist on their own in the ground. So, they exist in the combined state with other elements and these elements or compounds are known as ores. These are the raw materials used for making metals.

Complete step by step answer:
Basically, ores are a mixture of minerals which are used to produce other metals. Steel, aluminum, mercury, zinc, manganese and some copper ores are typically processed for just one element. Moreover, the field of science that deals with the extraction of metals from ores is known as metallurgy. Now let’s discuss the extraction of ores and minerals.
We have a process known as mining which is used for extracting metal ores buried deep underground. These metal ores are found in the Earth’s crust in varying abundance. Further, the ores consist of desired metal compounds and impurities and earthly substances known as gangue.
Now, sulphide minerals are a class of minerals containing sulfide or per sulfide as the major anion. Some sulphide minerals are economically important as metal ores. Further, bismuth is found in sulphide ores. The ore is known as Bismuthinite i.e. $B{i_2}{S_3}$ . The other options i.e. antimony and arsenic also occur with sulphide in nature but these are minerals not ores.
Hence, option B is correct.

Note: Don’t get confused with minerals and ores. Basically, an ore is the rock from which the metal is extracted in a convenient and economical way and it has a composition that is definite whereas the metals that occur naturally in the Earth’s crust are known as minerals.