A) \[{{H}_{2}}S{{O}_{4}}\]
B) \[CH{{ }_{3}}COOH\]
C) \[CH{{ }_{3}}C{{H}_{2}}COOH\]
D) boric acid
Correct Answer: A
Solution :
Key Idea: The electrolytes carry electricity with the help of their ions \[\because \]\[C{{H}_{3}}COOH,C{{H}_{3}}C{{H}_{2}}COOH\]and boric acid are covalent compounds. \[\therefore \] They don't dissociate in\[{{H}_{2}}O\]and hence don't produce ion. They do not carry electricity. \[\because \]\[{{H}_{2}}S{{O}_{4}}\]is ionic compound. It completely ionised in aqueous solution. \[\therefore \] It is best conductor of electricity.
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