Select the correct statement.

Penicillium notatum restricts the growth of Staphylococci

Acetobacter aceti produce citric acid

Saccharomyces cerevisiae is used as clot buster

Methenogens are found in aerobic conditions

Biogas is the __________ source of energy.

non-conventional and non-renewable

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Earn 100

33.33% studentsanswered this correctly

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Biogas is a mixture of

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A patient brought to a hospital with myocardial infarction is normally immediately given

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Lactic acid bacteria (LAB) grow in milk and convert it to curd and also improve its nutritional quality by increasing

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What gases are produced in anaerobic sludge digesters?

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The main sources of biofertilisers are
(a) Bacteria
(b) Cyanobacteria
(c) Fungi
(d) Protists

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Study the given differences between primary sludge and activated sludge and select the incorrect ones.

	Primary sludge	Activated sludge
(i)	It is sludge formed during primary sewage treatment.	It is sludge formed during secondary sewage treatment.
(ii)	It possesses flocs of decomposer microbes.	It does not possess flocs of decomposer microbes.
(iii)	It does not require aeration.	Formation of activated sludge requires aeration.
(iv)	A lot of decomposition occurs during formation of primary sludge.	Very little decomposition occurs during formation of activated sludge.