Question
State the various characteristics of chemical reactions.
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| Column I | Column II |
| (1) Modern periodic table | (a) Group 17 |
| (2) Vertical columns | (b) Period 2 |
| (3) Halogen | (c) Atomic number |
| (4) Smallest period | (d) Group |
| (e) Period 3 |
| Scientist | Discovery |
| (1) Johann Gregor Mendel | (a) Chromosomes of grasshopper |
| (2) Hugo de Vries | (b) DNA is genetic material |
| (c) Pioneer of the modern genetics | |
| (d) Mutational theory |
| Column I | Column II |
| (1) Cellulose | (a) P.V.C. pipes, bags |
| (2) R.N.A | (b) Blankets |
| (3) Polyacrylonitrile | (c) Wood |
| (4) Polyvinyl chloride | (d) Chromosomes of plants |

