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प्रश्न
Select the correct name from the choices given below for the following case.
A chemical used as a preservative for jams, pickles, etc.
पर्याय
Titanium dioxide
Rayon
Benzoic acid
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उत्तर
Benzoic acid
संबंधित प्रश्न
What is science?
What is ‘Philosopher’s stone’?
What is the main difference between alchemy and chemistry?
Write True or False against the following statement.
Gunpowder is an insecticide:
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:
Hard glass boiling tube
Select the correct name from the choices given below for the following case.
The branch of Science which deals with the different forms of energy e.g. light and sound.
Select the correct name from the choices given below for the following case.
The scientist who formulated the Periodic Table.
Give reasons for the following
Alchemy was considered a pseudoscience.
