MCQ
The correct order of density is
- A$Cu > Ni > Zn > Sc$
- ✓$Ni > Cu > Zn > Sc$
- C$Zn > Cu > Ni > Sc$
- D$Sc > Zn > Ni > Cu$
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$(I)$ $B + AN{O_3} \longrightarrow BN{O_3} + A$
$(II)$ $A + HCl \longrightarrow ACl + \frac{1}{2}\,{H_2}$
$(III)$ $D + ECl \longrightarrow DCl + E$
$(IV)$ $D + HN{O_3} \longrightarrow {H_2}$ gas is not evolved