An antibiotic is not useful against a virus whereas a vaccine is. Which one of the following is the most appropriate reason for this ?

Which one of the following is an antibiotic drug?

Which of the following is mRNA vaccine used against Covid-19 infection?

Which one of the following statements is correct about effects of antibiotics on viruses ?

Which one of the following is a Sulfa Drug?

Which one of the following pairs is not correctly matched?