17. Substance X conducts electricity when in the solid state.
X reacts with hydrochloric acid. Which substance could X be?
A copper(ll) oxide B silicon(IV) oxide
Csodium chloride D zinc
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Answer:
option D zinc
Explanation:
only metal can conduct electricity in solid state and metal above hydrogen in the activity series react with hcl to give hydrogen. hence zinc will be the only choice
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