MCQ
In weak alkaline medium iodide is changed in following compound by $KMnO_4$
- A$I_2$
- B$KI$
- C$IO^{-}_{2}$
- ✓$IO^{-}_{3}$
✓
Answer
Correct option: D.
$IO^{-}_{3}$
d
$2 KMnO _4+ H _2 O + KI \rightarrow 2 MnO _2+2 KOH + KIO _3$
$2 KMnO _4+ H _2 O + KI \rightarrow 2 MnO _2+2 KOH + KIO _3$
$I +6 OH ^{-} \rightarrow IO _3^{-}+3 H _2 O +6 e ^{-}$
When alkaline $KMnO 4$ is treated with $KI ^{-}{ }^{}$is oxidised to $IO _3{ }^{-}$.
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
In the reaction the electrophile involved is
The order of the reaction occurring by following mechanism should be
→$(i)$ ${A_2} \to A + A$ (fast)
$(ii)$ $A + {B_2} \to AB + B$ (slow)
$(iii)$ $A + B \to $ (fast)
Among the following metals, the most dense is
The magnitude of crystal field stabilisation energy in octahedral field depends on :
→$(I)$ the nature of the ligand
$(II)$ the charge on the metal ion
$(III)$ whether the metal is in the first, second or third row of the transition elements
Which of the following compound does not give oxyacid of central atom on hydrolysis?
The correct $IUPAC$ name for the compound $[CO(NH_3)_4Cl(ONO]Cl$ is
→The Henry's law constant for the solubility of $N_2$ gas in water at $298\, K$ is $1.0\times10^5\, atm$. The mole fraction of $N_2$ in air is $0.8$. The number of moles of $N_2$ from air dissolved in $10$ moles of water at $298\, K$ and $5\, atm$ pressure is
→The non-essential amino acid among the following is
In a reaction $N_2(g) + 3H_2(g) \to 2NH_3(g)$ the rate of appearance of $NH_3$ is $2.5 \times 10^{-4}\,mol\,L^{-1}\,s^{-1}$ . The rate of reaction and rate of disappearance of $H_2$ will be (In $mol\,L^{-1}\,sec^{-1})$
→Which one of the following reagents is not suitable for the elimination reaction ?
