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Home⇒ Medical Science⇒ Microbiology⇒ Sauerkraut and pickles
1-Dont try to cram or spend more time here just read it fast and cover syllabus then practice MCQ's cheptor of same topic to check your progress. . |
2-Wrong options are also given but dont concentrate there, Right answer is in bold format. |
Q1 ⇒ Blackening in pickles occurs due to the formation of hydrogen sulfide by bacteria [other wrong options] [Discuss in forum] growth of Pencillium both (a) and (b) none of the above |
Q2 ⇒ Floaters or bloaters may result from all of these [other wrong options] [Discuss in forum] hollow cucumbers gas being formed by yeasts hetero fermentative lactic acid bacteria |
Q3 ⇒ Which statement is true about flavouring materials spices, garlic etc. added to Dill pickles? They may be source of considerable numbers of undesirable micro-organisms and cause off-fermentations or spoilage of pickles [other wrong options] [Discuss in forum] These markedly stimulate or inhibit the acid forming bacteria They may improve texture of the pickle None of these |
Q4 ⇒ The elimination of the scum of yeasts in the brine during the fermentation include all of these [other wrong options] [Discuss in forum] agitation of the surface addition of the mustard oil addition of the sorbic acid |
Q5 ⇒ Slimy or ropy kraut is caused by encapsulated varieties of Lactobacillus plantarum [other wrong options] [Discuss in forum] Lactobacillus lactis encapsulated varieties of Lactobacillus brevis none of the above |
Q6 ⇒ Too long a fermentation of sauerkraut may favour the growth of Lactobacillus brevis [other wrong options] [Discuss in forum] Lactobacillus lactis Bacillus subtilis none of these |
Q7 ⇒ Black kraut is caused by the combined actions of plant enzymes and micro-organisms [other wrong options] [Discuss in forum] the plant enzymes the micro-organisms none of the above |
Q8 ⇒ Gassy spoilage of green olives is usually caused by all of these [other wrong options] [Discuss in forum] Enterobacter spp Bacillus spp Clostridium spp |
Q9 ⇒ The favouring conditions for floaters is both (a) and (b) [other wrong options] [Discuss in forum] high intial amounts of salt thick skin that does not allow gas to diffuse out none of these |
Q10 ⇒ Abnormal fermentation of cabbage may result in a cheese like odour caused by all of these [other wrong options] [Discuss in forum] propionic acid butyric acid caprioc acid and Valeric acid |
Q11 ⇒ The growth of black-pigmented Bacillus nigrificans, a causative agent of black pickle is favoured by all of the above [other wrong options] [Discuss in forum] presence of carbohydrate like glucose low level of available nitrogen neutral or slightly alkaline brine |
Q12 ⇒ An excessively high temperature in the fermentation of sauerkraut may inhibit the growth of Leuconostoc [other wrong options] [Discuss in forum] Pediococcus cerevisiae both (a) and (b) none of these |
Q13 ⇒ The most important bacterium developing acidity in both low and high salt brines is L. plantarum [other wrong options] [Discuss in forum] L. lactis L. brevis B. subtilis |
Q14 ⇒ Shriveling in fermented pickles results from the physical effect of all of these [other wrong options] [Discuss in forum] too strong salt solution too strong sugar solution too strong vinegar solution |
Q15 ⇒ Soft pickles are made so by pectolytic enzymes mostly from moulds [other wrong options] [Discuss in forum] yeasts bacteria none of these |
Q16 ⇒ Hollow pickles are obtained as a result of both (a) and (b) [other wrong options] [Discuss in forum] loose packing in the vat too strong or too weak brine none of these |
Q17 ⇒ Slippery pickles occur due to both (a) and (b) [other wrong options] [Discuss in forum] growth of encapsulated bacteria broken scums of film yeasts on the surface of brine addition of high amount of salt |
Q18 ⇒ Cloudiness of brine of glass-packed olives may be caused by all of the above [other wrong options] [Discuss in forum] the lactics if fermentation of residual sugar resumes salt-tolerant bacteria film yeasts or moulds if air is available |