Advertisements
Advertisements
प्रश्न
What kind of experiments did Alchemists do?
उत्तर
‘Alchemists’ considered to be early chemists. They used all general techniques of chemistry in healing humans. Their contribution proved valuable to society and in the advancement of civilization.
They had contributed to an incredible number of future uses of chemicals, metals, ink, paints, cosmetic, medicines, porcelain, etc
APPEARS IN
संबंधित प्रश्न
What is ‘Philosopher’s stone’?
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:
Used is an important
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 |
Give the basic difference between Inorganic Chemistry and Organic Chemistry.
State why a round bottom flask is preferred to a flat bottom flask – during the preparation of gases in the laboratory.
In the medieval ages – the philosopher’s stone was connected with all transformations. Explain.
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.
Select the correct apparatus from A, B, or C for the following functions of the apparatus given.
A rectangular mesh with asbestos at its centre kept for initiating even distribution of heat to the bottom of the apparatus.
