Which of the following reaction is oxidation and which is reduction ? {:((i),2H_2O+2e^(-),rarr,2OH^(-)+H_2),((ii), Al,rarr,Al^(3+)+3e^(-)),((iii) , Fe^(3+),rarr,Fe^(2+)-e^(-)),((iv),2O^(2-)+C,rarr,CO_2+4e^(-)),((v) ,Br^(-),rarr,1//2Br_2+e^(-)),((vi), 2H_2O-4e^(-), rarr,4H^(+)+O_2):}

Which of the following reaction is oxidation and which is reduction ?

1.	Which of the following reaction is oxidation and which is reduction ? {:((i),2H_2O+2e^(-),rarr,2OH^(-)+H_2),((ii), Al,rarr,Al^(3+)+3e^(-)),((iii) , Fe^(3+),rarr,Fe^(2+)-e^(-)),((iv),2O^(2-)+C,rarr,CO_2+4e^(-)),((v) ,Br^(-),rarr,1//2Br_2+e^(-)),((vi), 2H_2O-4e^(-), rarr,4H^(+)+O_2):}
Answer» ANSWER :Reduction reaction (i),(ii) and OXIDATION reaction (ii) , (iv) , (V) , (vi)