Question

Question 9.
(a) Name the following:
(i) The process of coating of iron with zinc.
(ii) An ore of zine containing its sulphide.
(ii) The process in which a sulphide ore is converted to oxide by heating in sufficient air.
(b) Arrange the following according to the instructions given in brackets:
(i) OH, NO3-, SO4²- (Select the ion that would get preferentially discharged at the
anode)
(ii) Li+, Cu²+, H+, Al³+. (In the order of preferential discharge at the cathode)
(iii) N, O, F, B (In the increasing order of electronegativity)
(c) Complete the following by selecting the correct option from the choices given:
(1) The metal which does not react with water or dilute H2SO4, but reacts with
concentrated H2SO4 is
(Al/Cu/Zn/Fe)
(ii) The metal whose oxide, which is amphoterie, is reduced to metal by carbon
reduction
(Fe/Mg/Pb/Al)
(iii) The divalent metal whose oxide is reduced to metal by electrolysis of its fused
salt is
(Al/Na/Mg/K).

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Answer 1

Answer:

1 ) the process of coting of iron with zinc is called galvanization