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Question

The metal which does not react with water or dilute $$H_{2}SO_{4}$$ but reacts with concentrated $$H_{2}SO_{4}$$ is ________. $$(Al/ Cu/ Zn/ Fe)$$.


Solution

The metal which does not react with water or dilute $$H_{2}SO_{4}$$ but reacts with concentrated $$H_{2}SO_{4}$$ is  $$Cu $$.
$$ \displaystyle Cu+2H_2SO_4 \text {(conc.)} \rightarrow CuSO_4+ 2H_2O+SO_2$$

Chemistry

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