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Antibiotics

Antibiotics
Chlorotetracyclin is soluble in

organic solvents
all of these
water
ether

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Antibiotics
Vegetable oil, (corn oil or soybean oil) added in the fermentation medium for penicillin, act as

source of nutrients
both (a) and (c)
antifoam agent
carbon source

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Antibiotics
The yield of the antibiotic depends upon

all of these
age of the inoculum
pH of the medium
composition of the medium

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Antibiotics
Streptomycin is produced by

S. griseus
S. aerofaciens
S. griseoflavus
S. ramosus

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Antibiotics
Penicillin is recovered after fermentation as

penicillin only
potassium penicillin
sodium penicillin
calcium penicillin

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Antibiotics
Which of the following precursor is added in the medium to get penicillin G?

Phenyl acetic acid
Ammonium sulphate
Ammonium chloride
Phenyl carbamic acid

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