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प्रश्न
Select the correct apparatus from A, B, or C for the following functions of the apparatus given.
A metallic apparatus which supports the wire gauze.
विकल्प
A Tripod stand
Retort stand
Test tube stand
उत्तर
A Tripod stand
संबंधित प्रश्न
What kind of experiments did Alchemists do?
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 why a round bottom flask is preferred to a flat bottom flask – during the preparation of gases in the laboratory.
Give a comparative difference between soaps and detergents. Give a reason. why detergents have an advantage over soap.
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 substance which absorbs moisture and keeps the skin dry and free from rashes.
Select the correct name from the choices given below for the following case.
A substance which dissolves grease & oil and is preferred as a – drain cleaner.
Select the correct apparatus from A, B, or C for the following functions of the apparatus given.
A glass apparatus resistant to chemicals, made of pyrex, and used for heating specific liquids.
Select the correct apparatus from A, B, or C for the following functions of the apparatus given.
A long glass tube with a broad inlet at the top, which allows entry of the reactants into the round bottom flask, during laboratory preparations of gases.
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.
