Polymer used for controlled release of drugs
(A) Poly glycolic acid
(B) Poly lactic acid
(C) Nylon - 2 - Nylon - 6
(D) PHBV

How many among the following are biodegradable polymers? (i) Polyhydroxybutyrate (PHB) (ii) PHBV (iii) SBR (iv) Polyglycolic acid (v) Bakelite (vi) Thiokol (vii) Nylon-2-Nylon-6 (vii) PMMA (ix) Nylon-6, 6.

Write the name and structures of the monomers of the following biodegradable polymers : (i) Nylon 2-nylon 6 (ii) PHBV (iii) PHB

The polymer used in orthopaedic devices and in controlled drug release is:

Which of the following is the incorrect use? (A) Glyptal - Lacquers (B) PVC - Rain coats (C) Nylon 6 6- Bristles for brushes (D) Bakelite - squeeze bottles

Explain the preparation and uses of nylon-2-nylon-6.

Which one of the following is not a polyamide polymers: (a) Nylon-6,6 (b) Nylon-6,10 ( c) Glylptal (d) Dacrone

Give the stuctures of monomers of the following polymes : ( a) Nylon -6,6 (b) Buna -s

Give the formula of monomers involved in the formation of the following polymers: (a)Buna-N , (b) Nylon-6

Convert the following : (a) ethanal to propanone (b ) ethanal to lactic acid (c ) Ethanal to 2-hydroxybut -3-enoic acid (d ) Acetaldehyde to formaldehyde. (e ) formaldehyde to acetaldehyde (f ) Acetaldehyde to crotonic acid .