MCQ
RCH means....
- AMaternal mortality rate
- BInfant mortality rate
- ✓Reproductive and child health care
- DContraceptive methods
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Choose the correct option for $A$ and $B$ to complete the given $NCERT$ statement
$1.$ primary treatment of sewage
$2.$ secondary treatment of sewage
$3.$ anaerobic sludge digester
$4.$ production of bioactive molecules