(a) Give one example of a metal which: (i) can displace hydrogen from cold water (ii) at red-heat, reacts reversibly with steam (iii) does not react with dilute hydrochloric acid (b) When dry hydrogen was passed over lead (II) oxide, a greyish solid J was obtained. (i) Identify J (ii) What type of reaction was involved in the formation of J from lead (II) oxide?

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(a) Give one example of a metal which: (i) can displace hydrogen from cold water (ii) ...

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