(i) Name the following:
(a) The ore of Zinc containing its sulphide .
(b) The most commonly used oxide ore of Aluminium.

(ii) State one observation in the following cases:
(a) Sodium chloride solution is added to a solution of lead nitrate.
(b) Barium chloride solution is added to a solution of Zinc sulphate.

(iii) Copper sulphate solution is electrolysed using copper electrodes.
(a) Which electrode [cathode or anode] is the oxidizing electrode? Why?
(b) Write the equation for the reaction occurring at the above electrode

(iv) X [2, 8, 7] and Y [2, 8, 2] are two elements. Using this information complete the following:
(a) __________ is the metallic element.
(b) Metal atoms tend to have a maximum of __________ electrons in the outermost shell.
(c) ___________ is the reducing agent

Solution

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