SYNTHETIC FIBRE AND PLASTICS

Tick the correct option :
Acrylic fiber is

• is man made fiber
• it is soft and light weight
• it is artificial wool
• All of the above

Tags

NGSS.MS-PS1-3

Cellulose is made up of large number of _______ units.

• sucrose

• glucose

• amino acids

• dacron

Tags

NGSS.HS-LS1-6

Mention the type of polymer.

• linear

• natural

• cross linked

• synthetic

The synthetic fibre best suited to make this is ______ and is due to its _____property.

• Polyester, Elasticity

• Nylon,Elasticity

• Polyester, High tensile strength

• Nylon, High tensile strength

Which of the following plastics objects can be recycled?

i). Electric socket ii). Polythene bag iii).PVC pipe iv). Ashtray

• A and B

• B and C

• A and D

• C and D

Out of the following materials ::

a. Which materials are polyesters? b. Which material is a polyamide?

• cotton, nylon

• terylene, wool

• cotton,wool

• terylene, nylon

Tags

NGSS.MS-PS1-3

It is not advisable to wear clothes made of synthetic fibre while working near fire because

.

• They are uncomfortable in those works

• They melt on heating and cause heavy burns

• They do not absorb moisture

• They are shiny and lustrous

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Thermosetting Plastics

• Can be reshaped using heat and pressure.

• Are lighter plastics

• Can be recycled

• Can not be reshaped using heat and pressure

Tags

NGSS.MS-PS1-4

Electrical switches are made up of

• melamine
• bakelite
• PVC
• polythene

Necklace : bead :: polymer : ________.

• Monomer

• Dimer

• Tetramer

• Trimer

Tags

NGSS.MS-PS1-1