Polymers Test -...

Consider the following repeat unit structure:

Natural fibre is :-

The cork cambium, cork and secondary cortex are collectively called?

Match the following 
     polymer                                                 Catalyst     
A) Low density polythene                    1) $${\text{FeS}}{{\text{O}}_{\text{4}}}{\text{ + }}{{\text{H}}_{\text{2}}}{{\text{O}}_{\text{2}}}$$     
B) Polypropylene                                   2)$${\left( {{\text{N}}{{\text{H}}_{\text{4}}}} \right)_{\text{2}}}{{\text{S}}_{\text{2}}}{{\text{O}}_{\text{8}}}$$ 
C) Teflon                                                3) $${\left( {{{\text{C}}_{\text{2}}}{{\text{H}}_{\text{5}}}} \right)_{\text{3}}}{\text{Al}}$$
D) Orlon                                                 4)Trace of oxygen     

Which of the following polymers consists of practically linear molecules?

Which one of the following polymer is step-growth polymer?

Which of the following is not correctly matched?

Synthetic rubber is:

Acetoacetic ester is made by the process of:

Major product of the following reaction is :