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21. Cheese prepared in Indian homes is processed or unprocessed.

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22. Name the two organisations that were involved in the development of the technique of biogas.

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23. Why is yoghurt considered better than milk ?

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24. Name the bacteria which can be used for yoghurt formation.

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25. What is Bacitracin ?

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26.

Find out the name of the microbes from which Cyclosporin A (an immunosuppressive drug) and Statins (blood cholesterol lowering agents) are obtained.

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Lactobacillus .

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28. ‘Saccharomyces cerevisiae is commonly called ‘Baker’s yeast’. Why ?

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29. Name the physical processes employed in primary treatment of sewage.

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30. Name the substances by the fermentation of which, whisky, beer, wine, brandy and rum can be prepared.

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