Question

A metal less reactive and another metal more reactive than hydrogen arem :

• A. aluminium and lead
• B. iron and magnesium
• C. copper and aluminium
• D. copper and mercury

Answer 1

The correct option is C copper and aluminium

The reactivity series follows the order:

$K>Na>Ca>Mg>Al>Zn>Fe>Pb>H>Cu>Hg>Ag>Au$

Thus, $Cu$ is less reactive and $Al$ is more reactive than hydrogen.