Answer :
The true statement about physical properties of both acids and bases is both conduct electricity.
What are physical properties?
Physical properties are those properties which are observed by the simple eyes.
Acids are those substances which donate H⁺ ion in an aqueous solution and bases are those substances which donate OH⁻ ion in an aqueous solution. Due to these ions, conductivity of electricty takes place in an aqueous solution.
- Only acids contain hydrogen ions, so option A is incorrect.
- Bases are hydroxide ion donors, so option C is also incorrect.
- Acids are hydrogen ion donor, so option D is also incorrect.
Hence acids and bases both conduct electricity.
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