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प्रश्न
Give the symbol of the following element:
Calcium
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उत्तर
| Name | Symbol |
| Calcium | Ca |
संबंधित प्रश्न
Write true or false
Milk is an emulsion.
Match the formulas of the following gases with their correct names :
Gases - (a) H2 (b) N2 (c) O2 (d) Cl2 (e) HCI (f) NH3 (g) CO (h) CO2 (i) SO2 (j) NO (k) NO2.
Names:
(1) Ammonia (2) Nitrogen Dioxide (3) Oxygen (4) Hydrogen (5) Nitrogen (6) Chlorine (7) Carbon Monoxide (8) Sulphur Dioxide (9) Nitrogen Monoxide (10) Carbon Dioxide (11) Hydrogen Chloride
In the chemical word equation –
Zinc + Sulphuric acid → Zinc sulphate + Hydrogen.
State the reactants and products of the above reaction. What does the arrow indicate?
Select the correct answer from the choice given below.
The symbol of mercury is
Give the symbol of the following element:
Arsenic
State the most reactive and the least reactive metal from the following – Zn, Ag, Na, Fe, Cu, Pb.
Give the formula of the following acid:
Hydrochloric
Give the formula of the following gas:
Nitrous oxide
Give the formula of the following gas:
Nitrogen dioxide
In the same way in chemistry, each element is denoted by a ______.
