What is redox reaction? which one of this is not a redox reaction, and how didi u find it out?
C isn’t a redox reaction. A redox reaction is when one element gets oxidized and another gets reduced, that means that the value of their charge changes (while one increases, another decreases) For example, in D, Al has a charge of 0 and Fe a charge of +3, while in the product, Al has a charge of +3 and Fe of 0. Since one element (Al) has been oxidized from a charge of 0 to +3, and another element (Fe) has been reduced from a charge of +3 to 0, then it is a redox reaction.