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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 |
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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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संबंधित प्रश्न
What is chemistry?
What is alchemy?
State the function of
The clamp mounted on the rod of a retort stand
State the method used for collecting the following gas-
Ammonia – a gas highly soluble in water and lighter than air
Select the correct name from the choices given below for the following case.
The branch of Science which deals with the different forms of energy e.g. light and sound.
Select the correct name from the choices given below for the following case.
A water-soluble cleaning agent – not inactivated by hard water.
Select the correct apparatus from A, B, or C for the following functions of the apparatus given.
A glass apparatus that measures liquid by sucking the liquid at one end up to the marked level and later pouring it out.
Select the correct apparatus from A, B, or C for the following functions of the apparatus given.
A modern apparatus with an air regulator, used for heating purposes.
Select the correct apparatus from A, B, or C for the following functions of the apparatus given.
A modern apparatus with an air regulator, used for heating purposes.
Give reasons for the following
Alchemy was considered a pseudoscience.
