Question

Cassiterite is an ore of:
A. Mn
B. Ni
C. Sb
D. Sn

Answer 1

Hint:Out of $117$elements known so far, noble metals, noble gases, nitrogen. Oxygen and a few other metals are available in native state while others are available as their compounds. These compounds are present in naturally occurring solid substances called minerals. Ores are minerals from which one or more metals can be extracted.

Complete step-by-step answer:Ores can be defined as the minerals that have an abundant concentration of a certain element, typically the element is mostly a metal.
For example: We all know that Bauxite is an ore of aluminum as it has a large proportion of Aluminum in it.
In the question we are given an ore Cassiterite, and we have to select the option which represents the correct metals of the given ore.
Cassiterite- a constituent of igneous rocks is an oxide of tin $\left( Sn{{O}_{2}} \right)$. Thus, it is an ore of tin as this ore contains tin metal in it. Cassiterite is opaque in general, but when laid down in thin crystals it becomes translucent. It is generally of Black, brownish black color.
It should be noted that it was a prominent ore of tin in ancient India and is still a chief ore of tin in today's ${{21}^{st}}$century India.
Metallurgy or process of extraction of metal from its ore involves various steps. In case of cassiterite, the ore is firstly pulverized or broken into small particles. Then it is roasted with coal in a reverberatory furnace. As a result, crude tin containing few impurities is obtained. This crude tin is then refined using the process of liquation. The refined tin thus obtained is purified further and is available in markets.
Therefore, Cassiterite is an ore on tin.
Now let us look at ores of other elements given in the option.

Metals	Name of the ore	Formula of the ore
Manganese (Mn)	Pyrolusite, Magnetite	$Mn{{O}_{2}},M{{n}_{2}}{{O}_{3}}.2{{H}_{2}}O$
Nickel (Ni)	Milarite	$NiS$
Antimony (Sb)	Stibnite	$S{{b}_{2}}{{S}_{3}}$

Hence, the correct Option is Option D. (Sn)

Note: Tin (Sn) is used in various fields. It has numerous applications. It protects iron from being rusted through its plating over the iron objects. Tin when mixed with lead forms an alloy named solder, which is used prominently in the electrical industry. It has many applications even in the optoelectronic devices such as LCD.