Advertisements
Advertisements
प्रश्न
Give the formula and valency of:
cupric ………………… .
Advertisements
उत्तर
Cupric
Formula Cu
Valency +2
APPEARS IN
संबंधित प्रश्न
Write down the formulae of sodium sulphide.
Write the chemical formula of the Magnesium chloride.
Fill the following blanks with suitable words :
In a chemical reaction, the sum of the masses of the reactants and the products remains unchanged. This is called ....................
What is meant by the symbol of an element ? Explain with examples.
What do the following abbreviations stand for ?
- O
- 2O
- O2
- 3O2
What do the symbols, H2, S and O4 mean in the formula H2SO4 ?
An element Z has a valency of 3. What is the formula of oxide of Z ?
An element B shows valencies of 4 and 6. Write the formulae of its two oxides.
Name the following compounds. Also write the symbols/formulae of the ions present in them :
- CuSO4
- (NH4)2SO4
- Na2O
- Na2CO3
- CaCl2
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 |
Write the formula of the following compound:
Potassium sulphate
Write the formula of the following compound:
Sodium sulphate
Write the formula of the following compound:
Magnesium hydroxide
Write the formula of the following compound:
Magnesium oxide
Write the formula of the following compound:
Zinc nitrate
Write the formula of the following compound:
Tetra amine copper [II] sulphate
State of the following formula of a compound is incorrect. Incorrectly write the correct formula.
(NH4)3SO4
Write the molecular formulae for the following compounds
Magnesium (II) acetate
