Multiple choice

Which of the following elements is common to all acids?

  1. Carbon

  2. Hydrogen

  3. Oxygen

  4. Sulphur
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

All acids contain hydrogen ions (H+) as the essential component that defines acidic behavior. When acids dissolve in water, they release H+ ions which are responsible for characteristic acidic properties like sour taste and ability to turn litmus red. Carbon, oxygen, and sulfur are not universal components of all acids.

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