Which of the following is a broad spectrum antibiotic ?

(1) Streptomycin

(2) Penicillin

(3) Ampicillin

answer : from all above options the correct answer is “(4) Chloramphenicol“

Answer explanation : Chloramphenicol is used for both gram positive and gram negative bacteria, hence is a broad spectrum antibiotic. as we know the definition of broad spectrum antibiotic is that those drugs or medicines or antibiotic which are effective for both gram-positive and gram-negative bacteria are called broad spectrum antibiotic and from all options the Streptomycin , Penicillin , Ampicillin are not come under this category because these are not effective for both gram bacteria but the Chloramphenicol effected for both type of bacteria.

The chemical formula for Chloramphenicol is “C₁₁H₁₂Cl₂N₂O₅” and the molar mass is “323.132 g/mol” Chloramphenicol is a type of drug or medicines which is used to treat superficial eye infections.