Question

The property which is not shown by acids is:

Options

• they have sour taste.

• they feel soapy.

• they turn litmus red.

• they conduct electricity.

Answer 1

They feel soapy.

Explanation:

Acids naturally have a sour taste (like lemons or vinegar), turn blue litmus paper red, and conduct electricity in aqueous solutions due to the presence of free ions. Feeling slippery or soapy to the touch is a characteristic physical property of bases (alkalis), which happens because they react with the natural fatty acids and oils on human skin to form soap molecules. Therefore, a soapy texture is not a property exhibited by acids.