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प्रश्न
Write the molecular formulae for the following compounds
Iron (III) sulphide
उत्तर
Iron(III) sulphide – Fe2S3
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संबंधित प्रश्न
If the valency of carbon is 4 and that of sulphur is 2, work out the formula of the compound formed by the combination of carbon with sulphur. What is the name of this compound ?
The formula of a compound is X3Y. The valencies of elements X and Y will be respectively :
Correct the following statement:
A molecular formula represents an element.
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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Iron [II] chloride
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Mg(SO4)2
There is ______ oxygen atom is water molecule.
