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p -Block elements - ll — Chemistry STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 ScienceChemistryp -Block elements - ll1 Mark
MCQ
Given below are two statements: One is labelled as Assertion $A$ and the other is labelled as Reason $R$

Assertion $A$: Permanganate titrations are not performed in presence of hydrochloric acid.

Reason $R$ : Chlorine is formed as a consequence of oxidation of hydrochloric acid.

In the light of the above statements, choose the correct answer from the options given below.

  • A
    Both $A$ and $R$ are true and $R$ is the correct explanation of $A$
  • B
    Both $A$ and $R$ are true but $R$ is NOT the correct explanation of $A$
  • C
    $A$ is true but $R$ is false
  • D
    $A$ is false but $R$ is true
✓

Answer

$2 KMnO _{4}+16 HCl \rightarrow 2 MnCl _{2}+2 KCl +8 H _{2} O + Cl _{2}$

$HCl$ gets oxidised by $KMnO _{4}$ into $Cl _{2}$

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