Which one of the following reactions is not an example of a redox reaction?
- A$Cl_2 + 2H_2O + SO_2 \to 4H^{+} + SO_4^{2-} + 2Cl^{-}$
- B$Cu^{2+} + Zn \to Zn^{2+} + Cu$
- C$2H_2 + O_2 \to 2H_2O$
- D$HCl + H_2O \to H_3O^{+} + Cl^{-}$
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$A$ solution of $KMnO_4$ on reduction yields either a colourless solution,a brown precipitate,or a green solution depending on the $pH$ of the solution. What different stages of the reduction do these represent and how are they carried out?
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View SolutionWhich of the following are redox changes?
$(i)$ Hydrolysis of $XeF_2$
$(ii)$ Thermal decomposition of $Ag_2CO_3$
$(iii)$ Reaction of $Al$ with $NaOH$
$(iv)$ Hydrolysis of $PCl_5$
$(v)$ Reaction of $NaCl$ with conc. $H_2SO_4$
Correct options are:
$(i)$ Hydrolysis of $XeF_2$
$(ii)$ Thermal decomposition of $Ag_2CO_3$
$(iii)$ Reaction of $Al$ with $NaOH$
$(iv)$ Hydrolysis of $PCl_5$
$(v)$ Reaction of $NaCl$ with conc. $H_2SO_4$
Correct options are:
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View SolutionFerrous sulphate on strong heating gives:
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View SolutionAssign $A, B, C, D$ from the given type of reaction.
$NO + NO_2 \xrightarrow{-11 \ ^{\circ}C} N_2O_3$
$NO + NO_2 \xrightarrow{-11 \ ^{\circ}C} N_2O_3$
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View SolutionWhich of the following is a true statement?
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