Question

Which among the following is not the characteristic of thermoplastics. linear arrangement cross linked arrangement can be deformed easily on heating can be remoulded​

Answer 1

Explanation:

DEFINITION OF PLASTIC - DEFINITION

1. Plastic is also a polymer like the synthetic fibre.

2. All plastics do not have the same type of arrangement of units.

3. In some, it is linear, whereas in others it is cross-linked.

Examples: polythene, PVC, polystyrene.

THERMOPLASTICS AND THERMOSETTING PLASTICS - DEFINITION

Plastic that gets deformed easily on heating and can be bent easily is known as thermoplastics. Polythene and PVC are some of the examples of thermoplastics.

Some plastics which when molded once, cannot be softened by heating. These are called thermosetting plastics. Examples are bakelite and melamine.

PHYSICAL PROPERTIES OF PLASTICS - DEFINITION

Plastics are inexpensive, lightweight, strong, durable, corrosion-resistant materials, with high thermal and electrical insulation properties.

THERMOPLASTICS - DEFINITION

1. This are the polymers whose properties are in between elastomer and fibers.

2. These polymers are called thermoplastic as on heating they become soft and on cooling become hard.

3. Hence these polymers can be remoulded and recycled .

4. Example : Polythene , polystyrene PVC etc.

Answer 2

$\sf\underbrace\red{Answer}$

There are two types of fibres – One is natural fibres which are obtained from natural sources e.g. Cotton, silk, wool and other is synthetic fibres which are man-made for example – rayon, nylon, acrylic etc.

II. A Synthetic Fibre is a chain of small units of chemical substance joined together. Many such single units combine to form single unit called Polymer. Polymer means �made of many units joined together�.

Explanation:

Hope It's Helps