MCQ
In 'fed batch' fermentation method, the process of continuously adding sugar is done for which of one of the followings?
- AIn preparing methane
- BIn obtaining antibiotics
- CIn purification of enzymes
- DIn sewage decomposition
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$I$. Pills prevent ovulation during use as contraception technique
$II$. Copper$-T$ prevents implantation
$III$. Vasectomy produces semen containing no sperm