Advertisements
Advertisements
प्रश्न
Write the formula of the following compound:
Aluminium oxide
उत्तर
Aluminium oxide - Al2O3 - `"Al"^(3+)["O"]^(2-)`
APPEARS IN
संबंधित प्रश्न
Write down the formulae of magnesium hydroxide.
Write the chemical formula of the Magnesium chloride.
Give the formulae of the compounds formed from the following sets of elements :
- calcium and fluorine
- hydrogen and sulphur
- nitrogen and hydrogen
- carbon and chlorine
- sodium and oxygen
- carbon and oxygen
An element Y has a valency of 4. Write the formula for its :
- chloride
- oxide
- sulphate
- carbonate
- nitrate
The formula of carbonate of a metal M is M2CO3.
What will be the formula of its nitride ?
Give the formula and valency of:
cupric ………………… .
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 |
Write the formula of the following compound:
Potassium bisulphite
Write the formula of the following compound:
Sodium zincate
Write the formula of the following compound:
Sodium sulphate
Write the formula of the following compound:
Zinc hydroxide
Write the formula of the following compound:
Aluminium chloride
Write the formula of the following compound:
Aluminium nitrate
Write the formula of the following compound:
Aluminium hydroxide
Write the formula of the following compound:
Iron [II] sulphide
There is ______ oxygen atom is water molecule.
What is a chemical formula?
