Answer:
Option B and D
Step-by-step explanation:
Any substance which is able to produce ion, acts as a good conductor of electricity. Both base and acid dissociate in water and produce OH- and H+ respectively which act as carrier of charge. Thus option D is correct.
Both acid and alcohol forms the part of soap and thus option B is also correct
However, Litmus turns from blue to red in acidic solution only, thus option A is incorrect. Also, only acid donates proton , hence option C is incorrect.