Answer
(a) 0.10 M NaCl will be the best conducting solution, as NaCl is a strong electrolyte
(b) Ethanol is the poorest conductor because it is a non-electrolyte
Work Step by Step
(a) 0.10 M NaCl will be the best conducting solution, as NaCl is a strong electrolyte
(b) Ethanol is the poorest conductor because it is a non-electrolyte