In which condition of the uterus, fertilisation is impossible? 

Lactational amenorrhea is effective only upto a maximum period of ……….. following parturition.

Which of the following is a wrong match between the type of contraception and its function?

Contraceptive$\quad$ device Function

All the following statements are correct about 'Saheli', but one is wrong. Which one is wrong?

In the rhythm method of birth control, the couple refrains from intercourse