\(Cu\) and \(HNO_{3}\) are not suitable for preparing hydrogen gas because of their
A.
reactivity and oxidation respectively
B.
conductivity and corrosiveness respectively
C.
melting point and reduction respectively
D.
electronegativity and solubility respectively
Correct answer is A
Copper is not active enough to replace hydrogen in an acid. Also, nitric acid is a strong oxidizing agent which quickly oxidises hygrogen to water.
