ICSE 2002 : SCIENCE Paper 2 (Chemistry) - Question 4(b) Answer the following.

SCIENCE
Paper 2 (Chemistry) - 2002
(One hour and a half)

Question 4
(b) Manganese (IV) oxide, Lead (IV) oxide and Red Lead (Pb₃O₄) react with concentrated hydrochloric acid, liberating chlorine.

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47.
(i) What is the common property being shown by these metal oxides?

48.
(ii) Write the equation for the reaction of concentrated hydrochloric acid with Pb₃O₄

49.
(iii) What kind of compound can be added to bleaching powder to obtain chlorine?

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