Assertion (A): Manganese is mainly used in the manufacturing of steel and ferro- manganese alloy.

Reason (R): It is also used in manufacturing bleaching powder, insecticides and paints.

 

Answer :

So, the correct answer is (B ) : Both assertion (A) and reason (R) are true but  reason (R) is not the correct explanation of  assertion (A).

Explanation :

  • Assertion (A) : Manganese is mainly used in the  manufacturing of steel and ferro- manganese alloy. Nearly 10kg of manganese is required to manufacture 1 tonne of steel. So this is true.
  •   Reason (R): It is also used in manufacturing  bleaching powder, insecticides and paints. So, this Is also true.
  • But R is not the correct explanation for A, because manufacturing of Bleaching powder, insecticides and paints is not related to the manufacturing of steel and ferro manganese alloy.

Thus,

  • Assertion is true
  • Reason is also true
  • Reasoning is not the correct explanation for Assertion

 So, the correct answer is (a)

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Davneet Singh

Davneet Singh has done his B.Tech from Indian Institute of Technology, Kanpur. He has been teaching from the past 14 years. He provides courses for Maths, Science, Social Science, Physics, Chemistry, Computer Science at Teachoo.