MCQ
Which of the following pair of elements cannot form an alloy
- A$Zn - Cu$
- ✓$Fe - Hg$
- C$Fe,\,C$
- D$Na,\,Hg$
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$(1)$ $C{H_3}CH = CHC{H_2}C{H_3}$ $ \xrightarrow{HBr} $
$(2)$ $C{H_3}C{H_2}CH = C{H_2}$ $ \xrightarrow{HBr} $
$(3)$ $C{H_3}CH = CHC{H_3}$ $ \xrightarrow{Br_2} $
$(4)$ $C{H_3}C{H_2}CH = C{H_2}\mathop {}\limits_{{\rm{}}} $ $ \xrightarrow[Proxide]{HBr} $
Statement $I:$ For $KI$, molar conductivity increases steeply with dilution.
Statement $II:$ For carbonic acid, molar conductivity increases slowly with dilution. In the light of the above statements, choose the correct answer from the options given below:
$2{H_2}{O_2}(l) \rightleftharpoons {H_2}O(l) + {O_2}(g)$
$(R = 83\, JK^{-1}\, mol^{-1})$

