Rewrite the following statements by selecting the correct options:i. ………….. is obtained by the reduction of its oxide by carbon. (a) Zinc (b) Aluminium (c) Sodium (d) Potassiumii. ………….. is used as an anode during the electrolytic reduction of bauxite.(a) Sulphur (b) Graphite (c) Platinum (d) Aluminiumiii. Silver gets corroded due to ………… in air. (a) oxygen (b) hydrogen sulphide (c) carbon dioxide (d) nitrogeniv. …………. is the hardest substance and has the highest melting and boiling points.(a) Iodine (b) Sulphur (c) Diamond (d) Phosphorusv. Jewellery articles are gold plated …………. (a) to prevent corrosion (b) to prevent rusting of the base metal (c) to make articles attractive (d) all of thesevi. To show that zinc is more reactive than copper, the correct procedure is to ………..(a) prepare copper sulphate solution and dip a zinc strip in it(b) prepare zinc sulphate solution and dip a copper strip in it (c) heat together zinc and copper strips (d) add dil. nitric acid to both the stripsvii. Iron is ……… (a) more reactive than zinc (b) more reactive than aluminuium (c) less reactive than copper (d) less reactive than aluminiumviii. A solution of Al2(SO4)3 in water is …………(a) blue (b) pink (c) green (d) colourlessix. A solution of ………… in water is blue in colour.(a) CuSO4(b) FeSO4(c) ZnSO4(d) Al2(SO4)3x. A solution of …………. n water is green in colour.(a) CuSO4(b) FeSO4(c) ZnSO4(d) Al2(SO4)3