Teaching BPSC बिहार प्राथमिक (1 to 5) शिक्षक भर्ती 4.0 Mock Test General Science Chemistry Classification of Elements and Periodicity in Properties
Which among the following alloys is made up of copper and zinc?
1
Monel Metal
2
Dutch Metal
3
Rolled Gold
4
More than one of the above
5
None of the above