Draw the orbital structure of each of the following compounds:

(i) Water

(ii) Magnesium chloride

[At.No. : H = 1, 0 = 16, Mg = 12, Cl = 17]

Write a balanced chemical equation for each of the following reactions:

(i) Magnesium hydrogen carbonate reacts with slaked lime.

(ii) Formation of coloured precipitate.

(iii) Heating ammonium dichromate.

Give one equation each to show the reactions of sulphuric acid :

(i) with a metal carbonate

(ii) with a metal

(i) State Boyle's law.

(ii) Calculate the volume occupied by 2 g of hydrogen at 270°C and 4 atmosphere pressure if at STP it occupies 22.4 litres.