Exam

JEE Main

Year

2019

Date

11 January

Shift

Evening Shift

Subject

Chemistry

Chapter

d and f Block Elements

JEE Main 2019 · 11 January · Evening Shift · Chemistry · d and f Block Elements

A 4 KOH, O_ 2 (Green) 2 B +2 H_ 2 O B 4 HCl ( Purple ) 2 C + MnO_ 2...

$\quad \mathrm{A} \stackrel{4 \mathrm{KOH}, \mathrm{O}_{2}}{\longrightarrow} \underset{(\mathrm{Green})}{2 \mathrm{ B}}+2 \mathrm{H}_{2} \mathrm{O}$$\mathrm{B}$\stackrel{4$\mathrm{HCl}$}{\longrightarrow} \underset{($\text{ Purple }$)}{2$\mathrm{C}$}+$\mathrm{MnO}_{2}+$2 $\mathrm{H}_{2} \mathrm{O}$ 2 $\mathrm{C}$ \stackrel{$\mathrm{H}_{2} \mathrm{O}$, $\mathrm{KI}$}{\longrightarrow} 2 $\mathrm{ A}+\mathrm{KOH}+\mathrm{D}$ In the above sequence of reactions, A and D, respectively, are:

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