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प्रश्न
‘Alchemists are older words for Chemists’. Discuss the statement in brief.
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उत्तर
Alchemy and alchemists are older words for Chemistry and chemists where –alchemists transformed or created substances through a seemingly – magical process. An alchemist Nicolas Flamel claimed to transform metals into gold.
संबंधित प्रश्न
What is the main difference between alchemy and chemistry?
Who is known as the Father of chemistry? Why?
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 |
Choose the correct alternative from the choices given below for the following statement:
Trinitrotoluene is used as
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:
Retort
State why a round bottom flask is preferred to a flat bottom flask – during the preparation of gases in the laboratory.
State the function of
The asbestos fixed at the center of the wire gauze.
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.
Predecessors to the modern Chemist who created the ‘Philosopher's stone’.
