Question

Match the options given in Column A with Column B and mark the correct option.

	Column A		Column B
(a)	Electrolyte	(i)	Production of magnesium chloride
(b)	Cathode	(ii)	Negatively charged electrode
(c)	Electrolysis	(iii)	Copper sulphate solution
(d)	Anode	(iv)	Connected to negative pole of battery

• A. a-(iii), b-(iv), c-(i), d-(ii)
• B. a-(ii), b-(iii), c-(iv), d-(i)
• C. a-(iv), b-(iii), c-(i), d-(ii)
• D. a-(i), b-(ii), c-(iv), d-(iii)

Answer 1

Answer: (A)

a-(iii), b-(iv), c-(i), d-(ii)

a) Whenever copper sulfate or $CuS{O}_4$ is added to water, it gets dissolved in the water. As $CuS{O}_4$ is an electrolyte, it splits into $C{u}^{2+}$ (cation) and $S{O}_4^{2-}$ (anion) ions and move freely in the solution.

b) The electrode which is connected to the negative terminal of the battery is called the cathode.

c) More than half of the magnesium production is carried out by electrolysis. Magnesium production using aqueous electrolytes is not possible because of the highly stable nature of magnesium ions in water. This leaves molten salt electrolysis of $MgC{l}_2$ as the electrolytic method for magnesium production.

d) The electrode connected with the positive terminal of the battery is known as anode.

a-(iii), b-(iv), c-(i), d-(ii)

Hence, option A is correct.