What is the practice of alternating leguminous crops with forage crops to improve soil structure and fertility called?

Following are the steps in $MOET$ programme for herd improvement in which a cow has been administered hormones with $FSH$ like activity. Arrange steps $A$ to $D$ in their correct sequence in $MOET$.
$A.$ Transferred to surrogate mothers.
$B.$ It produces $6-8$ eggs instead of one egg which they normally yield per cycle.
$C.$ It is artificially inseminated or mated with an elite bull.
$D.$ Fertilised eggs at $8-32$ celled stage are recovered non-surgically.

Which of the following are considered volatile toxicants used as fumigants?

Match the names given under Column-$I$ with their relations given under Column-$II$, and choose the answer which gives the correct combination of the alphabets of the two columns.

Column-$I$ (Name)	Column-$II$ (Relations)
$A$. Bombyx mori	$P$. Disease of mulberry
$B$. Morus alba	$Q$. Centre where silkworm eggs are produced and supplied
$C$. Grainage	$R$. Silk moth
$D$. Powdery mildew	$S$. Mulberry plant
	$T$. Freshly hatched silkworm

Where is the Banas Dairy located?

Which of the following is an incorrect pair?