Advertisements
Advertisements
प्रश्न
Write the formula of the following compound:
Aluminium oxide
Advertisements
उत्तर
Aluminium oxide - Al2O3 - `"Al"^(3+)["O"]^(2-)`
APPEARS IN
संबंधित प्रश्न
Explain the difference between 2N and N2.
Write down the formulae for the following compounds :
Magnesium hydroxide
An element Z has a valency of 3. What is the formula of oxide of Z ?
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 :
An element A forms an oxide A2O5.
What will be the formula of chloride of A ?
Correct the following statement:
Formula of iron (lll) oxide is FeO.
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 |
Write the formula of the following compound:
Potassium zincate
Write the formula of the following compound:
Potassium nitrite
Write the formula of the following compound:
Calcium bisulphite
Write the formula of the following compound:
Zinc chloride
Write the formula of the following compound:
Copper [II] oxide
Write the formula of the following compound:
Iron [II] sulphate
Write the formula of the following compound:
Lead [II] chloride
State of the following formula of a compound is incorrect. Incorrectly write the correct formula.
Mg(SO4)2
Which of the following represents a correct chemical formula? Name it.
BiPO4
Write the molecular formulae for the following compounds
Calcium (II) phosphate
There are ______ hydrogen atoms in water molecule.
