Chapter 23, Problem 120SCQ

(a)

Interpretation Introduction

Interpretation:

It should be identified that which of the following symbol belongs to which type of plastic.

Concept introduction:

Plastics make up about $\text{20\%}$ o the volume of landfills. There I , therefore, considerable interest in reusing or recycling these materials. They are different type of plastics tee are differ by their densities.

They are polyethylene, polyvinyl chloride, polypropylene and polyethylene terephthalate.

(b)

Interpretation Introduction

Interpretation:

Based on the given information, it should be described that how to separate samples of these plastics from one another.

Concept introduction:

Plastics make up about $\text{20\%}$ o the volume of landfills. There I, therefore, considerable interest in reusing or recycling these materials. They are different type of plastics tee are differ by their densities.

They are polyethylene, polyvinyl chloride, and polypropylene and polyethylene terephthalate.