Question

Khetri mines in Rajasthan are famous for which mineral?
a.Uranium
b.Iron
c.Copper
d.None of these

Answer 1

Hint: The Khetri mines are located in the town of Khetri Nagar in Rajasthan. These mines were used for the extraction of the ore of a highly ductile metal used as a major part of electric motors.

Complete answer: The options in the above are all important minerals found in India. Hence, let’s take a look at the options one by one.
a.Uranium: Uranium is radioactive material which is used as a fuel in nuclear reactors. This is mainly used for electricity production in power plants. Since it is not ductile, this option is out of bounds. So, it is an incorrect option.
b.Iron: Iron is a grey couloured metal which is used as a chief constituent of all types of heavy machinery. Although it is ductile, it is not used in motors due to its lower conductivity. So, it is an incorrect option.
c.Copper: Copper is one of the most abundant mines in Khetri mines in Rajasthan. It is an important site controlled by Hindustan Copper Limited. It was a part of the ambitious Tamba Project. Besides this, the only mines owned by Hindustan Copper Limited are in Madhya Pradesh and Jharkhand. So, it is the correct option.
d.None of these: Since we already have the correct answer in option c above, this option is out of bounds. So, it is an incorrect option.

So, the correct answer is option C.

Note: Copper is the best conducting material after gold and silver. It’s symbol in chemistry is named after its Latin name which is Cuprum.