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प्रश्न
Define Alchemy.
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उत्तर
Alchemy was a form of chemistry studied in the middle age, which was concerned with trying to discover ways to change ordinary metals into gold.
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संबंधित प्रश्न
The formula of the sulphate of an element M is M2(SO4)3
Write the formula of it
Chloride
Give two examples of the following:
Liquid + Liquid mixture:
Select the correct answer from the choice given below.
The type of element-phosphorus
Give the symbol of the following element:
Carbon
State the type of element for the following:
Fluorine
Write the radical of the following valency:
Calcium
Write the chemical formula of the following:
aluminium chloride
State the valency of the following metallic element and write symbol with the valency
Calcium
State whether the following ion or radical given below of a non-metallic element exhibits valency: 1–, 2– or 3–. (write the ion or radical with the correct valency).
Iodide
Write a note on Greem symbols.
