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प्रश्न
State the function of
The asbestos fixed at the center of the wire gauze.
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उत्तर
The asbestos fixed at the centre of the wire gauze initiates even distribution of heat to the bottom of the apparatus. It also prevents glass apparatus from cracking
संबंधित प्रश्न
How is the knowledge of chemistry important to mankind?
___________ deals with the study of matter and the changes it undergoes.
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 |
State the functions of the following basic glass apparatus:
Glass test tube
State the functions of the following basic glass apparatus:
Retort
State the function of
The air regulator in a Bunsen burner.
Give a comparative difference between soaps and detergents. Give a reason. why detergents have an advantage over soap.
State what are – ‘stain removals’. Name three important stain removers & give their prime functions.
Select the correct apparatus from A, B, or C for the following functions of the apparatus given.
For gas preparations where heating is required.
A philosopher’s stone is not exactly a stone.
