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प्रश्न
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.
विकल्प
Talc
Preservative
Emulsifier
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उत्तर
Talc
संबंधित प्रश्न
___________ deals with the study of matter and the changes it undergoes.
Write True or False against the following statement.
Chemistry plays an important role in the national economy:
Choose the correct alternative from the choices given below for the following statement:
Which one of the following is a pesticide?
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 function of
The asbestos fixed at the center of the wire gauze.
State the method used for collecting the following gas-
Ammonia – a gas highly soluble in water and lighter than air
In the medieval ages – the philosopher’s stone was connected with all transformations. Explain.
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.
