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प्रश्न
Give the formula of the following gas:
Nitric oxide
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उत्तर
Nitric oxide – NO
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संबंधित प्रश्न
What do the following symbol stand for?
H2
Match the non-metallic elements – with their correct symbols. Non-metallic elements are:
| Non-Metallic elements | Symbol |
| (a) Carbon | (1) O |
| (b) Chlorine | (2) I |
| (c) Oxygen | (3) Si |
| (d) Phosphorus | (4) C |
| (e) Hydrogen | (5) Cl |
| (f) Nitrogen | (6) P |
| (g) Iodine | (7) F |
| (h) Bromine | (8) H |
| (i) Fluorine | (9) S |
| (j) Silicon | (10) Br |
| (k) Sulphur | (11) N |
State what a chemical formula denotes.
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:
Carbon
State the type of element for the following:
Lead
State the type of element for the following:
Iodine
State what is meant by the term ‘activity series of metals’.
State the valency of the following metallic element and write symbol with the valency
Chromium
Write the symbols for the following elements.
- Oxygen
- Gold
- Calcium
- Cadmium
- Iron
