Question 4 - Assertion Reasoning Questions (MCQ) - Chapter 3 Class 10 - Metals and Non-Metals (Term 1)

Assertion (A): A mineral is called ore, when metal  is extracted from it conveniently and economically.  

Reason (R): All ores are minerals but all minerals are not ores.  

Answer

Minerals are naturally occurring  chemical substances in the earth’s crust obtained  by mining. 

A mineral is called an ore only when the metal can be extracted from it conveniently  and economically. 

Thus, all ores are minerals but all minerals are not ores.  

Thus, 

• The Assertion is True.
• Reason is also True.

And the Reason is NOT the correct explanation for the assertion.  

So, the correct answer is (b)