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प्रश्न
Match the following scientists in column A with their discoveries or contributions in column B.
| Column A | Column B | ||
| (a) | Marie Curie | (i) | Safety Lamp |
| (b) | John dalton | (ii) | Helium |
| (c) | William Ramsey | (iii) | Nobel Prize Winner (two times) |
| (d) | Sir Humphry Davy | (iv) | Atomic Theory |
उत्तर
| Column A | Column B | ||
| (a) | Marie Curie | (iii) | Nobel Prize Winner (two times) |
| (b) | John dalton | (iv) | Atomic Theory |
| (c) | William Ramsey | (ii) | Helium |
| (d) | Sir Humphry Davy | (i) | Safety Lamp |
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