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प्रश्न
Write True or False against the following statement.
Gunpowder is an insecticide:
पर्याय
True
False
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उत्तर
False
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संबंधित प्रश्न
What is chemistry?
What is ‘Philosopher’s stone’?
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 |
State why a round bottom flask is preferred to a flat bottom flask – during the preparation of gases in the laboratory.
State the method used for collecting the following gas:
Oxygen – a gas slightly soluble in water.
Select the correct name from the choices given below for the following case.
The scientist who formulated the Periodic Table.
Select the correct name from the choices given below for the following case.
A chemical used as a preservative for jams, pickles, etc.
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 that measures liquid by sucking the liquid at one end up to the marked level and later pouring it out.
Give reasons for the following
Alchemy was considered a pseudoscience.
