Microbiology
Blackening in pickles occurs due to

both (a) and (b)
the formation of hydrogen sulfide by bacteria
None of these
growth of Pencillium

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Microbiology
Which statement is true about flavouring materials spices, garlic etc. added to Dill pickles?

These markedly stimulate or inhibit the acid forming bacteria
They may improve texture of the pickle
They may be source of considerable numbers of undesirable micro-organisms and cause off-fermentations or spoilage of pickles
None of these

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