NEET
- Exam
- NEET
- Subject
- Chemistry
- Chapter
- Hydrogen
NEET · Chemistry · Hydrogen
What makes water 'hard'?
What makes water 'hard'?
Options
- APresence of dissolved gases
- BPresence of calcium and magnesium salts
- CHigh mineral content
- DLow pH
Correct answer
B. Presence of calcium and magnesium salts
Step-by-step solution
Water is considered 'hard' due to the presence of calcium and magnesium salts in the form of hydrogencarbonate, chloride, and sulfate.