MCQ
Iodine deficiency in diet causes
- ANightblindness
- BRickets
- ✓Goiter
- DBeri-beri
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$A : 3\,, 2\,, -2\,, +\, \frac{1}{2}$
$B : 3\,, 0\,, 0\,, + \,\frac{1}{2}$
What is true for $A$ and $B$

($en=$ ethylenediamine)
Cyclohexane $\xrightarrow{{hv/C{l_2}}}(X)\xrightarrow{{alc.KOH/\Delta }}(Y)\mathop {\xrightarrow{{(i)\,{O_3}}}}\limits_{(ii)\,{H_2}O/Zn} (Z)$
$(Z)$ will be :
