Complete the following reaction:
(i) `CH_(3)CH_(2)OH underset(Heat)overset(conc.H_(2)SO_(4))to`
(ii) `CH_(3)COOH+NaHCO_(3)to`
(iii) `CH_(4)+Cl_(2)overset("sunlight")to`
(iv) `CH_(2)=CH_(2)+H_(2)overset(Ni)to`
(v) `C_(2)H_(5)OH+O_(2)overset(Alk." "KMnO_(4))to`

Explanation

(i) `underset("Ethanol")(CH_(3)CH_(2)OH)underset(Heat)overset(conc.H_(2)SO_(4))tounderset("Ethene")(CH_(2)=CH_(2))+H_(2)O`
(ii) `underset("Ethanoic acid")(CH_(3)COOH)+underset("Sod. Hydrogen carbonate")(NaHCO_(3))tounderset("Sod. Ethanoate")(CH_(3)COONa)+CO_(2)+H_(2)O`
(iii) `underset("Methane")(CH_(4)+Cl_(2))overset("Sunlight")tounderset("Chloromethane")(CH_(3)Cl)+HCl`
(iv) `underset("Ethene")(CH_(2)=CH_(2))+H_(2)overset(Ni)tounderset("Ethane")(CH_(3)-CH_(3))`
(v) `underset("Ethanol")(C_(2)H_(5)OH)+O_(2)underset(("Oxidation"))overset("Alk. "KMnO_(4))tounderset("Ethanoic acid")(CH_(3)COOH)+H_(2)O`