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PPSC Past Paper 2025 (Junior Clerk Evening)
PPSC · 2025 · Practice with instant answers and explanations
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100 Past Paper MCQs
Question 41 of 100
41%
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Question
41
Past Paper
PPSC
Hardness of water is mainly due to dissolved salts of:
A
Calcium and sodium
B
Calcium and magnesium
C
Potassium and carbonate
D
Sulphate
Correct Answer:
Option B — Calcium and magnesium
Explanation:
Dissolved calcium and magnesium salts cause most water hardness.
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