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प्रश्न
Choose the correct alternative from the choices given below for the following statement:
Which one of the following is a pesticide?
पर्याय
benzoic acid
aldrin
sugar
gunpowder
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उत्तर
aldrin
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संबंधित प्रश्न
What is the contribution of chemistry in the following field?
National Defence
Match the following words in column A with those in column B:
| Column A | Column B | ||
| (a) | Clothing | (i) | toothpaste, cosmetics |
| (b) | Green Revolution | (ii) | nylon, wool |
| (c) | Building Material | (iii) | agriculture |
| (d) | Commodities of daily | (iv) | mortar, cement |
Write True or False against the following statement.
Enzymes secreted by our body are chemicals:
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:
Round bottom flask
State the functions of the following basic glass apparatus:
Retort
State the function of
The asbestos fixed at the center of the wire gauze.
State the function of
The clamp mounted on the rod of a retort stand
State the method used for collecting the following gas:
Sulphur dioxide – a gas highly soluble in water and heavier than air
Select the correct name from the choices given below for the following case.
Predecessors to the modern Chemist who created the ‘Philosopher's stone’.
