Which of the following liquids is a bad conductor of electricity?

Correct answer: (d) None of the above

Explanation

Salted water conducts well because NaCl dissociates into mobile Na⁺ and Cl⁻ ions.

Orange and lemon juice are acidic and contain H⁺ ions, so they also conduct electricity.

Since all three given liquids are conductors, none qualifies as a bad conductor.