Chemistry · Oct / Nov 2021 · Paper 12 · Question 31
The table gives properties of four metals, P, Q, R and S. | | method of extraction | reaction with water | reaction with acid | |---|---|---|---| | P | electrolysis only | no reaction | reacts slowly | | Q | heating oxide with carbon | reacts slowly with steam | reacts slowly | | R | electrolysis only | reacts rapidly with steam | reacts rapidly | | S | heating oxide with carbon | no reaction | no reaction | Which statement is correct?
- AP is the least reactive.
- BQ would displace R from a solution of its salt.
- CR could be zinc.
- DS could be copper.
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Correct answer: D. S could be copper.
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