Write the formula of M⁺³ (i) sulphate (ii) nitrate (iii) phosphate (iv) carbonate (v) hydroxide.

Write the following numbers as power of 3 : (i) 3 (ii) 9 (iii) 243 (iv) 1

Write down the formulae of (i) sodium oxide (ii) aluminium chloride (iii) sodium sulphide (iv) magnesium hydroxide

Write the molecular formulae of : (a) Sodium sulphide (b) Magnesium oxide (c) Calcium hydroxide (d) Hydrogen chloride (e) Sulphuric acid (f) Iron (II) sulphide (g) Iron (III) sulphite (h) Nitric acid (i) Calcium phosphate (j) Aluminium sulphate (k) Magnesium nitride

Choosing only substances from the list given in the box below, write equations for the reactions which you would use in the laboratory to obtain: (i) Sodium sulphate (ii) Copper sulphate (iii) Iron (iv) Zinc carbonate Dilute sulphuric acid, Copper, Iron, Sodium, Zinc, Copper carbonate, Sodium carbonate

Give the structural formula for the following: (i) Methanoic acid (ii) Ethanal (iii) Ethyne (iv) Acetone (v) 2-methyl propane.

Which pair is essential for the growth of fish in water? (a) Nitrates and sulphates (b) Sulphates and carbonates (c) Phosphates and carbonates (d) Calcium and phosphorus

Distinguish between the following pairs of compounds · using test given within brackets : Iron (II) sulphate and iron (III) sulphate (using ammonium hydroxide)

Name three (i) sulphates (ii) Chloride insoluble in water and- two (i) oxides (ii) carbonates soluble in water

The valency of sodium is one. Write the molecular formula for the following compounds of sodium (a) sodium oxide (b) sodium sulphate (c) sodium carbonate (d) sodium hydroxide (e) sodium nitrate

Write the formula of the following compounds : Hexaaquairon (II) sulphate.