Question

In which of the following experimental set-ups reaction will take place. (i) Magnesium ribbon in copper sulphate solution. (ii) A few pieces of calcium in magnesium sulphate solution. (iii) Copper wire in zinc sulphate solution. (iv) Iron nails in magnesium sulphate solution.
a) (iii) and (iv) only
b) (i) and (ii) only
c) (ii) and (iii) only
d) (i) and (iv) only

Answer 1

Answer:

i think d one

Explanation:

Answer 2

Answer:

(d) is the answer

Explanation:

As per the reactivity series, the reactivity order is Ca- mg- zn- fe- cu

hence only reactions (i) and (ii) are possible as more reactive metals can displace less reactive metals from its salt solution.