MCQ
When a lead storage battery is charged it act as
- AA fuel cell
- ✓an electrolytic cell
- Ca galvanic cell
- Da concentration cell
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(Given : atomic number $Sm =62 ; Eu =63 ; Tb =65 ; Gd =64, Pm =61 \text { ) }$
$A.$ $Sm$ $B.$ $Eu$ $C.$ $Tb$ $D.$ $Gd$ $E.$ $Pm$
Choose the correct answer from the options given below:
$XeF _2, I _3^{+}, C _3 O _2, I _3^{-}, CO _2, SO _2, BeCl_2 \text { and } BCl _2^{\Theta}$