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प्रश्न
The pictorial symbol for water given by the alchemists was
पर्याय
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उत्तर
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संबंधित प्रश्न
Give two examples of the following :
Solid + Solid mixture
Match the metallic elements – with their correct symbols Metallic elements
| Metallic elements | Symbol |
| (a) Potassium | (1) Ca |
| (b) Sodium | (2) Zn |
| (c) Calcium | (3) Pb |
| (d) Magnesium | (4) Hg |
| (e) Zinc | (5) Cu |
| (f) Aluminum | (6) Au |
| (g) Iron | (7) K |
| (h) Lead | (8) Fe |
| (i) Copper | (9) Al |
| (j) Mercury | (10) Na |
| (k) Silver | (11) Mg |
| (l) Platinum | (12) Pt |
| (m) Gold | (13) Ag |
In the chemical word equation – Zinc + Sulphuric acid → Zinc sulphate + Hydrogen
The molecular equation is :
Zn + H2SO4 → ZnSO4 + H2[g].
State what [g] represents.
Give the symbol of the following element:
Potassium
Write the radical of the following valency:
Bromine [Bromide]
Write the radical of the following valency:
Potassium
Write the chemical formula of the following:
calcium sulphide
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
What does the symbol '(g)' present in a chemical equation, mean?
Name the elements with the following symbols.
- Na
- W
- Ba
- Al
- U
