471. The drug which gives orange colour to the urine is______________?
A. Rifampicin
B. Ethambutol
C. INH
D. Streptomycin
472. Which on of the following is penicillinase resistant penicillin_______________?
A. Amoxycillin
B. Cloxacillin
C. Ampicillin
D. Penicillin G
473. Desfuroxamide is a drug used for____________?
A. Kala azar
B. Pernicious anaemia
C. Pain control
D. Thalassemia
474. A patient has seasonal allergic rhinitis and is on terfenadine, He develps cardiac arrhythmias after a course of antibiotics. Which of the following antibiotic could have been given_____________?
A. Ampicillin
B. Tetracyclin
C. Erythromycin
D. Co-trimoxazole
475. Antifungal drug not used in the treatment of imtestinal candidiasis______________?
A. Amphotericin
B. Nystatin
C. Ketoconazole
D. Clotrimazole
476. The drug of choice for treatment of tyhoid is____________?
A. Tetracycline
B. Metronidazole
C. Ciprofloxacin
D. Cefotaxim
477. The bacterial resistance to tetracycline is due to___________?
A. Alteration of drug binding sites
B. Alteration of dehydrofolate reductase
C. Inactivation of drug by enzymes
D. Decreased uptake of drug by bacteria
478. Mechanism of action of quinolones is______________?
A. Inhibits DNA gyrase
B. Inhibits Bacterial protein synthesis
C. Inhibits bacterial cell wall synthesis
D. Inhibits intake of folic acid
479. Tetracycline is contraindicated in_____________?
A. Children
B. Pregnancy
C. Renal failure
D. All of the above
480. The antibiotic of choice in patients sensitive to penicillin is___________?
A. Erythromycin
B. Streptomycin
C. Tetracycline
D. Chloramphenicol