General Science question from Laboratory Attendant exam, 2026 by JKSSB
What happens when magnesium sulphate solution is added to copper metal?
Last updated Jun 18, 2026
Correct Answer:
Option D —
No reaction occurs
Explanation:
This question is based on the reactivity series of metals, which ranks metals from most reactive to least reactive.
Magnesium is a highly reactive metal and sits near the top of the reactivity series.
Copper is a much less reactive metal and sits near the bottom of the series.
Because copper is less reactive than magnesium, it does not possess enough chemical "strength" to displace magnesium from its solution. Therefore, when you place copper metal into a magnesium sulphate solution, they will not react with each other at all.
Answer verified by Quintessence Classes faculty — Karan Nagar, Srinagar.
