Among the following, the narrow spectrum antibiotic is (1) penicillin G. (2) ampicillin (3) amoxycillin.

Question : Among the following, the narrow spectrum antibiotic is

(1) penicillin G.
(2) ampicillin

(3) amoxycillin.
(4) chloramphenicol.

Answer : from all above options the correct answer is “(1) penicillin G.” A narrow spectrum antibiotic is only effective against Grampositive or Gram-negative bacteria. For example, Penicillin G. that is why we have marked option (1) for our correct answer.

answer explanation : first of all you must know what is antibiotics , so antibiotics are those medicines or drug or substances which is used to reduced bacterial infections it means these types of substances can kill bacteria and make our body bacteria free so that the disease due to this bacteria will also disappear.

now you must know what is  narrow spectrum antibiotic , so the narrow spectrum antibiotic are some specified antibiotics , it means they can kill only few types of bacteria or we can say that these can kill some limited types of bacteria effectively. here ampicillin , amoxycillin and chloramphenicol are the examples of broad-spectrum antibiotics and penicillin G is example of narrow spectrum antibiotic. that is why (1) penicillin G is correct answer as per question requirement.