Correct Answer: (b) German Silver
Solution:German silver is also known as Nickel silver, Maillechor, New silver, Alpacca, etc. It is a copper alloy with nickel and often zinc. The usual formulation is 60% copper, 20% nickel and 20% zinc (But according to NCERT the composition of german silver is Cu (25-30%), Zn (25-30%) and Ni (40. 50%). It is named for its silvery appearance but it contains no silver element.