Which of the following pairs cannot undergo displacement reaction?

(a) iron sulphate solution and magnesium

(b) zinc sulphate solution and iron

(c) zinc sulphate solution and calcium

(d) silver nitrate solution and copper

Q.

You are given a solution of iron sulphate. Which of the following do you think cannot displace iron from iron sulphate ?

(a) magnesium

(b) calcium

(c) copper

(d) zinc

Q.

A solution of copper sulphate, zinc sulphate, lead sulphate and silver nitrate of same concentration are taken in beakers. A zinc rod is dipped in each solution separately. In which beaker(s) will you observe the displacement reaction?

Q. Choose the reactions which are not feasible.
I. Iron + Zinc sulphate $\to$ Iron sulphate + Zinc
II. Magnesium + Silver nitrate $\to$ Magnesium nitrate + Silver
III. Copper + dil. sulphuric acid $\to$ Copper sulphate + $H_2$
IV. Zinc + Ferrous sulphate $\to$ Iron + Zinc sulphate

Q.

Which of the following reactions will not occur ? Why not ?

$\left(a\right)\underset{\left(solution\right)}{Zincsulphate}+Copper\to \underset{\left(solution\right)}{Coppersulphate}+Zinc\left(b\right)\underset{\left(solution\right)}{Coppersulphate}+Iron\to \underset{\left(solution\right)}{Ironsulphate}+Copper$

Q. State whether a displacement reaction will occur if the following are mixed. Give reasons. Give the reaction.
(a) copper sulphate and zinc
(b) copper sulphate and iron
(c) zinc sulphate and copper
(d) zinc sulphate and iron
(e) iron sulphate and zinc
(f) iron sulphate and copper