Which of the following statements is $INCORRECT$?
- AIn Haber's process,iron oxide,potassium oxide,and aluminium oxide are used as catalysts.
- B$ClO_2$ is used as a bleaching agent.
- CDecomposition of ozone is an endothermic process.
- DHydrolysis of $XeF_6$ is a non-redox process.
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The catalyst used in the lead chamber process of sulphuric acid manufacture is
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$(i)$ Oxygen shows $-2, -1, +1$ and $+2$ oxidation states.
$(ii)$ The thermal stability of $H_2O, H_2S$ and $H_2Se$ follows the order $H_2O < H_2S < H_2Se$.
$(iii)$ The reducing nature of $H_2S, H_2Se$ and $H_2Te$ follows the order $H_2S < H_2Se < H_2Te$.
$(i)$ Oxygen shows $-2, -1, +1$ and $+2$ oxidation states.
$(ii)$ The thermal stability of $H_2O, H_2S$ and $H_2Se$ follows the order $H_2O < H_2S < H_2Se$.
$(iii)$ The reducing nature of $H_2S, H_2Se$ and $H_2Te$ follows the order $H_2S < H_2Se < H_2Te$.
Among the elements of group $16$,which element exists in a metallic lattice in its monoatomic state and also exhibits two crystalline forms,$\alpha$ and $\beta$?
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