Give balanced equation for the following reaction : Phosphorus reacts with conc. `H_2SO_4`.

Give balanced equation for the reaction : (i) Phosphorous reacts with conc. Sulphuric acid. (ii) Ozone is treated with potassium iodide solution. Give balanced equation. (iii) Sulphuric acid is treated with hydrogen sulphide. (iv) Ozone reacts with lead sulphide. (v) Chlorine is passed through hot concentrated NaOH solution.

Write balanced equations for the following reactions. Copper reacts with conc. sulphuric acid to produce copper sulphate, sulphur dioxide and water.

Give balanced equations for the following reactions : Benzaldehyde reacts with hydrazine.

Give balanced equations for the following reactions : Acetone reacts with phenyl hydrazine.

Give balanced equations for the following reactions : Acetaldehyde reacts with hydrogen cyanide.

Give balanced equations for the following reactions : Acetone reacts with sodium bisulphite.

Give the balanced equations for the following reactions . Ethyne reacts with hydrobromic acid .

(a) Write balanced equations for the following reactions : (i) Chlorine reacts with dry slacked lime. (ii) Carbon reacts with concentrated H_2SO_4 . (b) Describe the contact process for the manufacture of sulphuric acid with special referecen to the reaction conditions, catalysts used and the yields in the process.

Give balanced equations for the following reactions : Acetic acid reacts with phosphorus pentachloride.

Write balanced equations for the following reactions. Lead reacts with hot and conc. caustic soda