1.

The manganese content in cast iron should be kept below __________(a) 0.75%(b) 1%(c) 1.5%(d) 1.75%The question was asked during an interview for a job.This key question is from Ferrous Metals in portion Air Conditioning, Thermal Insulation, Stones & Ferrous Metals of Construction & Building Materials

Answer»

Correct answer is (a) 0.75%

Easiest explanation: Presence of manganese makes CAST iron hard and BRITTLE. THEREFORE, manganese content in cast iron should be kept below 0.75%.



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