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प्रश्न
Write the chemical formula for the following elements.
- Hydrogen
- Nitrogen
- Ozone
- Sulphur
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उत्तर
| Elements | Formula |
| Hydrogen | H |
| Nitrogen | N |
| Ozone | O3 |
| Sulphur | S |
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संबंधित प्रश्न
Write down the formulae of sodium sulphide.
An element A forms an oxide A2O5.
What will be the formula of chloride of A ?
Match the following:
| Column A | Column B |
| (a) Pb(NO3)2 | (i) rotten eggs smell |
| (b) CO2 | (ii) burns with a pop sound |
| (c) (NH4)2Cr2O7 | (iii) the suffocating smell of sulphur |
| (d) HCI | (iv) lime water turns milky |
| (e) NO2 | (v) crackling sound |
| (f) O2 | (vi) residue swells up |
| (g) H2 | (vii) brown gas |
| (i) H2S | (viii) supports combustion |
| (j) SO2 | (ix) fumes with NH3 solution |
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Write the formula of the following compound:
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Give the chemical formulae for the following compounds and compute the ratio by mass of the combining elements in each one of them. (You may use appendix-III).
- Ammonia
- Carbon monoxide
- (Hydrogen chloride
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- Magnesium sulphide
