railway RRB Technician Grade 3 Mock Test 2024 General Science Chemistry Chemical Reaction

નીચેનામાંથી કયો Mg, Al, Zn અને Fe ની HCl સાથે પ્રક્રિયાશીલતાનો સાચો ક્રમ છે?

1
Mg > Al > Zn > Fe
2
Mg > Al > Fe > Zn
3
Zn > Fe > Mg > Al
4
Fe > Al > Zn > Mg
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