Chemical used in vaginal sponge is: (A) Ethynil estradiol, (B) Progesterone, (C) Mifepristone, (D) Nonoxynol-9
Answer is D. Vaginal sponge is a small polyurethane foam sponge saturated with spermicide, nonoxynol-9 It comes under barrier method of contraception Reference : Park&;s textbook of preventive and social medicine, 23rd edition, Page no: 495