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Q:

Rupee 5 and 10 coins are now made of

A) Ferritic stainless steel B) Silver and steel
C) Cupro nickel alloy D) Copper and brass

Answer:   C) Cupro nickel alloy



Explanation:

The copper nickel alloys composed of copper with 25% nickel with 0.05-0.4% manganese is commonly used for the manufacture of coins, medals and other semi valuable applications.

 

Subject: Chemistry
Exam Prep: Bank Exams
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