Question

1. Combustion of a substance is a/an
a: reduction reactions
b: oxidation reaction
c: displacement reaction
d: decomposition reaction​

Answer 1

Answer:

Correct option is

A

1

All combustion reactions are oxidation-reduction reactions.

For example, the combustion of oxygen is given by the following reaction:

C+O

2

→CO

2

The oxidation number of elemental C and oxygen are 0 each.

The oxidation number of C in CO

2

is +4 and the oxidation number of O in CO

2

is -2.

Thus, C is oxidized and O is reduced.

Hence, the combustion reaction is oxidation-reduction reaction.

Answer 2

Answer:

OPTION A IS THE ANSWER ꪮ ᧁꪮ