Teaching BPSC बिहार माध्यमिक TGT (9 to 10) शिक्षक भर्ती 4.0 Mock Test General Science Chemistry Chemical Reaction
Which one of the following is the correct order of reactivity of Mg, Al, Zn and Fe with HCI?
1
Mg > Al > Zn > Fe
2
Mg > Al > Fe > Zn
3
Zn > Fe > Mg > Al
4
More than one of the above
5
None of the above