$A$ : Once conception has occurred abortion can be induced by mifepristone drug.
$R$ : Mifepristone is progesterone antagonistic.

On which day, world population touched $5 ^{th}$ billion?

Syphilis is an infectious bacterial disease caused by Treponema pallidum with $3$ stages

$(A)$ Infectious painless ulcers on the genitals $\quad$$(i)$ First

$(B)$ Blindness, heart trouble,aortic impairment $\quad$$(ii)$ Second

$(C)$ Skin lesions, hairloss,swollen joints $\quad$$(iii)$ Third
Which of the following is the correct match between the symptoms and stage?

Which of the following statements about hepatitis$-B$ is incorrect?

In the population of world, how many persons are added per year