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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
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:
Which one of the following is a pesticide?
State the functions of the following basic glass apparatus:
Beaker
State the function of
The asbestos fixed at the center of the wire gauze.
State the method used for collecting the following gas-
Ammonia – a gas highly soluble in water and lighter than air
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.
A substance which dissolves grease & oil and is preferred as a – drain cleaner.
Give reasons for the following
Alchemy was considered a pseudoscience.
A philosopher’s stone is not exactly a stone.
