Download App

STD 12 - 4. d and f- block elements — NEET STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceNEETSTD 12 - 4. d and f- block elements4 Marks
MCQ
Pick out the incorrect statement :
  • A
    $MnO_2$ dissolves in conc. $HCl,$ but does not form $Mn^{4+}$ ions
  • B
    $MnO_2$ oxidizes hot concentrated $H_2SO_4$ liberating oxygen
  • C
    $K_2MnO_4$ is formed when $MnO_2$ in fused $KOH$ is oxidised by air, $KNO_3 , PbO_2$ or $NaBiO_3$
  • ✓
    Decomposition of acidic $KMnO_4$ is not catalysed by sunlight.
✓

Answer

Correct option: D.
Decomposition of acidic $KMnO_4$ is not catalysed by sunlight.
d

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

NEET STD 11 Science question papers→Gujarat Board STD 11 Science question papers→Gujarat Board question paper generator→

Similar questions

The species responsible for nitration and sulphonation by nitric acid conc. $H_2SO_4$ and fuming $H_2SO_4$ are :
→
Pick out the alkane which differs from the other members of the group.
→
In which of the following arrangements the order is $NOT$ according to the property indicated against it ?
→
When cold $NaOH$ reacts with $C{l_2}$ which of the following is formed
→
Carbon atoms in the compound ${(CN)_4}{C_2}$ are
→
Which of the following plots is in accordance with the Arrhenius equation
→
For the reaction ${H_2}(g) + \frac{1}{2}{O_2}(g)\,\, \to \,\,{H_2}O(l),\,\Delta H = - 285.8\,\,kJ\,\,mo{l^{ - 1}}$ $\Delta S = - 0.163\,kJ\,mo{l^{ - 1}}{K^{ - 1}}.$ What is the value of free energy change at ${27\,^o}C$ for the reaction ......$kJ\,mo{l^{ - 1}}$
→
Which of the following gives primary amine on reduction?
→
Which of the following is most reactive towards Dehydrohalogenation ?
→
The conversion of $2, 3$ -dibromobutane to $2$ -butene with $Zn$ is
→