Write any two differences between acids and bases.
Model Answer
Acids are sour, turn blue litmus red, and have a pH less than 7. They react with metals. Bases are bitter, turn red litmus blue, and have a pH greater than 7. They feel soapy.
Explanation
The provided option accurately lists multiple key differences between acids and bases, including their taste, effect on litmus paper, pH range, and physical properties or reactivity.