RRB Group-D Model Paper 20 with answers for online practice

Explanation:

• The solution of ferric chloride is acidic in nature.
• The aqueous solution of FeCl3 salt undergoes hydrolysis and forms HCl.

FeCl3→Fe3++3Cl−

H++Cl− → HCl

• This strong acid releases H+ ions in the solution.
• The resulting solution is acidic and turns blue litmus turns red.

So, the pH of the solution is acidic and on pH scale, it will be less than 7.