Emergency contraceptives are very effective in preventing potential pregnancy due to . . . . . . .

Which of the following cannot be detected in a developing foetus by amniocentesis?

Where is the Central Drug Research Institute $(CDRI)$ located?

Match the columns $:$

Column-$I$	Column-$II$
$(A)$ Condoms	$(I)$ blocks gamete transport
$(B)$ $\text{IUDs}$	$(II)$ once a week pill
$(C)$ Sterilisation	$(III)$ increase phagocytosis of sperm
$(D)$ Saheli	$(IV)$ Latex sheath

Match List-$I$ with List-$II$.

List-$I$	List-$II$
$A$. Vasectomy	$I$. Oral method
$B$. Coitus interruptus	$II$. Barrier method
$C$. Cervical caps	$III$. Surgical method
$D$. Saheli	$IV$. Natural method

Choose the correct answer from the options given below:

$A$: Use of condoms is a safeguard against $AIDS$ and sexually transmitted diseases besides checking pregnancy.
$R$: Certain contraceptives are implanted under the skin of the upper arm to prevent pregnancy.