Question

which substance is important in making plastics?
o zinc hydroxide
o ammonia
o acetic acid
o nitric acid

Explanation:

None of the substances listed (zinc hydroxide, ammonia, acetic acid, nitric acid) are directly important in making plastics. However, acetic - acid derivatives can be used in some plastic - related processes like in the production of certain polymers. But among common substances for plastic production, none of these are major ones.

Answer:

None of the above options are typically important substances in making plastics.