10th Class Federal Board Exams Quizzes MCQs Quizzes Federal Board Class 10th Chemistry Chapter No 1

Question:
Pemanent hard water contains compounds

Option A):
Carbonates of calcium and magnesium
Option B):
Sulphates and chlorides of calcium and magnesium
Option C):
Calcium carbonate and magnesium sulphate
Option D):
Bicarbonates of calcium and magnesium

Correct Answer is Option B):
Sulphates and chlorides of calcium and magnesium