Which of the following metals reacts with aqueous cubo a) au b) ag c) hg d) all of the above e) none of the above

E) None of the above

Explanation:

Metals react according to the activity series, thta is organized with the leats metals in in the bottom and the most reactive metals in the top. Most reactive metals displace less reactive metals in the compounds they are found.

in this series, Gold, Silver and Mercury are below Copper, this is, they are less reactive than Cu. this means none of them can displace it from its compounds.

d: the voltage of the secondary coil is less than that of the primary coil.

im not suree sorry if wrong