The polymer named Orlon is indeed polyacrylonitrile.


| Column I | Column II | ||
| (A). | Biodegradable | (P). | Polyacrylonitrie |
| (B). | Synthetic | (Q). | PHBV |
| (C). | Natural | (R). | Dacron |
| (D). | Polyester | (S). | Rubber |
Match List I with List II :
| List-I Polymer | List-II used for items | ||
|---|---|---|---|
| A | Nylon 6,6 | I | Buckets |
| B | Low density polythene | II | Non-stick utensils |
| C | High density polythene | III | Bristles of brushes |
| D | Teflon | IV | Toys |
Match the columns Column I Column II (a) Biodegradable (p) polyacrylonitrie (b) Synthetic (q) PHBV (c) Natural (r) dacron (d) Polyester (s) Rubber
The figure shows a pipe with cross-section area 10 \( cm^2 \). Water flows from one end with velocity 20 cm/s. The other end of the pipe is closed and consists of 10 holes each of area 30 \( mm^2 \). Find the velocity of water coming out from each hole: 
Which of the following best represents the temperature versus heat supplied graph for water, in the range of \(-20^\circ\text{C}\) to \(120^\circ\text{C}\)? 
Polymerization is a chemical reaction in which a large number of monomer molecules combine to produce a polymer. A polymerization can yield macromolecules with a linear or branching structure. They can also take the form of a three-dimensional complicated network.
Polymerization reactions are divided into two groups, namely, Addition polymerization (chain reaction) and condensation reaction (step reaction).