What is meant by 'hidden hunger'?

Which method undergoes continuous changes and improvements over time?

Which one of the following is being tried in India as a bio-fuel substitute for fossil fuels?

Which one of the following is a disease of poultry?

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.

Where is the Central Rice Research Institute located?