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The chemical formula of common salt is ________.
- KCl
- NaCl
- CaCl₂
- MgCl₂
Answer: NaCl
Sodium chloride (NaCl) is common table salt, formed by ionic bonding between sodium (Na⁺) and chloride (Cl⁻) ions. It's essential for nerve function and fluid balance in humans. [[NCERT Chemistry Class 10]]