Get Started
1556

Q:

Permanent hardness of water may be removed by the addition of

  • 1
    sodium carbonate
  • 2
    alum
  • 3
    potassium permanganate
  • 4
    lime
  • Show Answer
  • Workspace

Answer : 1. "sodium carbonate"

The Most Comprehensive Exam Preparation Platform

Get the Examsbook Prep App Today