MCQ
The correct order of basic strength.


- A$IV>I>II>III$
- B$IV > I > III > II$
- C$III > IV > I > II$
- ✓$IV > III > I > II$

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The correct statement is
$(i)$ $N{O_2}\xrightarrow{{slow}}NO + O$
$(ii)$ ${F_2} + O + NO\xrightarrow{{Fast}}N{O_2}F + F$
$(iii)$ $F + N{O_2}\xrightarrow{{Fast}}N{O_2}F$
Select the correct one
Reason : Lower the activation energy, faster is the reaction.


$Pt/ M/M^{3+}(0.001 \,mol\, L^{ -1})/Ag^+(0.01\, mol\, L^{-1})/Ag$
The emf of the cell is found to be $0.421\, volt$ at $298\, K$. The standard potential of half reaction $M^{3+} + 3e \to M$ at $298\, K$ will be .............. $\mathrm{volt}$
(Given $E_{A{g^ + }/Ag}^o $ at $298\, K\, = 0.80\, Volt$ )