Question
Define reduction reaction.
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| Column I | Column II |
| (1) $\mathrm{CH}_4$ | (a) $\mathrm{CH}_2=\mathrm{CH}_2$ |
| (2) Ethane | (b) $\mathrm{C}_n \mathrm{H}_{2 n-2}$ |
| (3) Alkene | (c) Methane |
| (4) Alkyne | (d) $\mathrm{C}_2 \mathrm{H}_6$ |
| (e) $\mathrm{C}_3 \mathrm{H}_8$ |
| 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 |