state gov APPSC Group 4 (Pre+Mains) Mock Test 2022 General Science Chemistry Classification of Elements and Periodicity in Properties
Which one of the following is the correct composition of Brass?
1
Cu - 50%; Sn - 50%
2
Cu - 60%; Zn - 40%
3
Zn - 70%; Sn - 30%
4
Fe - 40%; Ni - 60%