Multiple choice general knowledge science & technology Sodium Chloride Table Salt Common Salt Saltpeter None Reveal answer Fill a bubble to check yourself A,B Correct answer Explanation Sodium chloride (NaCl) is the chemical name for what we commonly call table salt or common salt. It's the salt most commonly used for food seasoning and preservation. 'Saltpeter' is potassium nitrate, not sodium chloride, making it incorrect.