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Antibiotics

Antibiotics
At acidic pH, penicillin remains in

aqueous phase
solvent phase
both (a) and (b)
precipitates

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Antibiotics
Chlorotetracyclin is soluble in

water
organic solvents
ether
all of these

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Antibiotics
At normal pH, penicillin remains in

aqueous phase
precipitates
solvent phase
both (a) and (b)

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Antibiotics
Streptomycin is produced by

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

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

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

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Antibiotics
Inoculum preparation for the fermentation medium for penicillin takes place on

wheat seeds
barley seeds
all of these
rice seeds

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