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प्रश्न
‘Alchemists are older words for Chemists’. Discuss the statement in brief.
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?
___________ deals with the study of matter and the changes it undergoes.
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 |
Write True or False against the following statement.
Chemistry plays an important role in the national economy:
Choose the correct alternative from the choices given below for the following statement:
Trinitrotoluene is used as
State the functions of the following basic glass apparatus:
Beaker
State the function of The tap at the base of a burette.
State the method used for collecting the following gas:
Oxygen – a gas slightly soluble in water.
State the method used for collecting the following gas-
Ammonia – a gas highly soluble in water and lighter than air
Give reasons for the following
Alchemy was considered a pseudoscience.
