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प्रश्न
Give reasons for the following
Alchemy was considered a pseudoscience.
उत्तर
Towards the end of the 17th Century the scientific processes involving modem Chemistry started paving paths and Alchemy today is considered pseudoscience and Chemistry regain its rightful position as a serious scientific field.
संबंधित प्रश्न
What is ‘Philosopher’s stone’?
How is the knowledge of chemistry important to mankind?
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 the function of
The wooden handle at the end of the test tube holder.
State the function of The tap at the base of a burette.
‘Alchemists are older words for Chemists’. Discuss the statement in brief.
Select the correct name from the choices given below for the following case.
Predecessors to the modern Chemist who created the ‘Philosopher's stone’.
Select the correct name from the choices given below for the following case.
A synthetic fiber used in clothing.
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 rectangular mesh with asbestos at its centre kept for initiating even distribution of heat to the bottom of the apparatus.
