Please answer the following question..
Dear student, correct option is a) In case of A and B bulb will not glow but in case of set up C bulb will glow. The bulb glows in the (C) case when an aqueous solution of HCl is taken because in this solution HCl being strong acid is completely ionised to give H+ and Cl- ions . Due to the presence of ions the aqueous solution becomes conducting and the circuit is completed. In case of Aqueous solution of glucose , glucose is a carbohydrate and a covalent compound which does not ionise. Alcohol also covalent compound so not ionise. Therefor glucose and alcohol solution are non conducting and bulb does not glow. Regards