A teacher takes 3 clean plastic caps of bottles - A, B & C
- She puts two teaspoonfuls of distilled water and few drops of hydrochloric acid in A.
- She puts two teaspoonfuls of distilled water and some caustic soda in B.
- She puts two teaspoonfuls of distilled water and some sugar in C.
Which of the above solution will conduct electricity

Correct option is B

The correct answer is (b) A&B.
Solution that conduct electricity are typically ionic solution, meaning they contain free ions. In cap A, hydrochloric acid dissociates into H+ and Cl- ions. In cap B, caustic soda (sodium hydroxide) dissociates into Na+ and OH- ions. Both these solution contain free ions capable of conducting electricity. In contrast, the sugar solution in cap C does not dissociate into ions; it’s a covalent compound that dissolves in water but doesn’t ionize, hence it doesn’t conduct electricity.