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प्रश्न
What is science?
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उत्तर १
Science is the systematic effort by human beings to control nature through experiments and observation for their own use.
उत्तर २
Science is the systematic ongoing effort by human beings to study understand and utilize nature for meaningful purposes. This understanding is slowly developed by careful observations and experiments.
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संबंधित प्रश्न
What is chemistry?
How is the knowledge of chemistry important to mankind?
Choose the correct alternative from the choices given below for the following statement:
Used is an important
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 |
Select the correct name from the choices given below for the following case.
Predecessors to the modern Chemist who created the ‘Philosopher's stone’.
Select the correct name from the choices given below for the following case.
A synthetic fiber used in clothing.
Select the correct name from the choices given below for the following case.
A substance which absorbs moisture and keeps the skin dry and free from rashes.
Select the correct apparatus from A, B, or C for the following functions of the apparatus given.
For gas preparations where heating is required.
Select the correct apparatus from A, B, or C for the following functions of the apparatus given.
A glass apparatus resistant to chemicals, made of pyrex, and used for heating specific liquids.
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.
