Question

6
SECTION-A
Subjective Type Questions :
1. Give examples of two daily objects which are
made up of PVC.
2. What are biodegradable polymers?
3. Write the monomers of any two linear polymers.
4. Name the polymer which is used for making non-
stick surface of cookware. Draw the structure of its
monomer
5.
What is vulcanisation of rubber?​

Answer 1

Answer:

1. pipes and rain coat

2. biodegradable polymers are polymers that decompose after the purpose by bacteria into its natural byproducts

3. nylon - adipic acid

Teflon - tetrafluroethene

4. Teflon

5. vulcanisation is the heating of rubber in the presence of sulpher, accelertor and activator at high temperature ( 150°C to 160°C )

Answer 2

Answer:

1. furniture, clothing, medical containers, tubing, water and sewage pipes, flooring,water bottles.
2. Biodegradable polymers  are those polymers which get decomposed under aerobic or anaerobic conditions, as a result of the action of microorganism/enzymes. The materials develop it like starch, cellulose, and polyesters.
3. Polystyrene (1-1), poly(methyl methacrylate) (1-34), and Poly(4-methyl pentene-1) (1-35)
4. Polytetrafluoroethylene(Teflon)
5. Vulcanization of rubber is a process of improvement of the rubber elasticity and strength by heating it in the presence of sulfur, which results in three-dimensional cross-linking of the chain rubber molecules (polyisoprene) bonded to each other by sulfur atoms