Question

What is By-product ?

Explain in brief.​

Answer 1

Answer:

something that is formed during the making of something else

Answer 2

Answer:

A by-product or byproduct is a secondary product derived from a production process, manufacturing process or chemical reaction; it is not the primary product or service being produced. ... Gasoline was once a byproduct of oil refining that later became a desirable commodity as motor fuel .