MCQ
Brass is an alloy of
- A$Zn $ and $ Sn$
- ✓$Zn$ and $ Cu$
- C$Cu, Zn $ and $Sn$
- D$Cu$ and $Sn$
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$(i){\,_{32}}G{e^{77}}$ $(ii)\,{\,_{33}}A{s^{77}}$
$(iii)\,{\,_{34}}S{e^{77}}$ $(iv)\,{\,_{34}}S{e^{78}}$
$CH_2OH-CHOH-CH_2OH$ $\xrightarrow{{KHS{O_4}/\Delta }}(X)\mathop {\xrightarrow{{{{({C_2}{H_5}O)}_3}Al}}}\limits_\Delta (Y)$
$(Y)$ will be: