Question

2 reactions in which one carbon atom is increased or decreased

Answer 1

The reaction in which carbon atom is increased in product as compared to reactant is called step up reaction where as step down reaction is that in which carbon atom is decreased in product as compared to reactant molecule.

2 reactions in which one carbon atom is increased is

1)reaction of aldehyde with grignard reagent gives alcohol containing one carbon more as compared to aldehyde.

2)Arndt eistert synthesis where we get one carbon more acid as product.