Question

please answer question no. 3 and 4 as fast as possible

Answer 1

Q3. uses of  rayon 
1.it is used in textile industry for making textiles.
2.it is used for making tyre cords.
 uses of nylon
1.it is used to make fabrics
2.nylon is widely used as plastic for making machine parts.
uses of bakelite
1.it is used to make toys, jewellery, 
2.its  excellent insulating properties is used in radio, telephone etc

Answer 2

3. Rayon is used in fabrics , home furnishings and industrial applications.
Nylon is used to make parachute canopies, cookware and machine parts.
Bakelite is used in electrical insulators , radio and telephone casings ,etc
4.Tensile strength is the resistance of a material to breaking under tension.they can be used in design of ductile and brittle members

hope this answer helps!!!