Discussion
The metal does not give H2 on treatment with dilute HCL is
Answer: C
Silver does not give hydrogen with dilute hydrochloric acid.
Only metals above hydrogen in the reactivity series displace it from an acid. Zinc, iron and calcium all lie above hydrogen and react; silver lies below it, so it is unattacked by dilute HCl and dissolves only in oxidising acids such as nitric acid.
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