A. Chlorhexdine
B. Alcohol
C. Savlon
D. None of the above
✅ The correct answer is option Chlorhexdine.
648. Babu, a 28 year old male comes with compaint of exposure 3 wks back, having cervical Lymphadenopathy, Hepatosplenomegaly. Diagnosis of HIV is done by____________?
A. ELISA
B. Western blot
C. P24 antigen
D. Lymph node biopsy
✅ The correct answer is option P24 antigen.
642. Australia antigen is associated with________________?
A. Hepatitis B surface antigen in acute hepatitis
B. AIDS
C. Chronic leukemia
D. Basal cell carcinoma
✅ The correct answer is option Hepatitis B surface antigen in acute hepatitis.
676. Which of the following methods is adopted for screening HIV infection ?
A. Virus isolation
B. Western blot followed by ELISA
C. ELISA followed by western blot technique
D. Polymers chain reaction
✅ The correct answer is option ELISA followed by western blot technique.
673. Dental Plaque adheres to tooth surface by________________?
A. Dextran
B. Epithelial cells
C. Bacteria
D. Sucrose
✅ The correct answer is option Dextran.
667. Mesophilic organisms are those that grow best at temperature of______________?
A. -20°C to -7°C
B. -7°C to + 20°C
C. 25°C to 40°C
D. 55°C to 80°C
✅ The correct answer is option 25°C to 40°C.
661. Phase contrast microscopy is based on principle of__________________?
A. Different refractive indices of object
B. Different reflective indices of object
C. Light scattering
D. Light attenuation
✅ The correct answer is option Different refractive indices of object.
656. Actinomycetes is______________?
A. Gram positive bacteria
B. Gram negative bacteria
C. Fungus
D. A yeast like form
✅ The correct answer is option Gram positive bacteria.
650. Inactivated microorganisms are used in the manufacture of which of the following________________?
A. Salk vaccine
B. Tetanus toxoid
C. Sabin’s oral vaccine
D. All of the above
✅ The correct answer is option Salk vaccine.
645. Lepromin test is useful for________________?
A. Diagnosis
B. Prognosis
C. Treatment plan
D. Epidemiology
✅ The correct answer is option Prognosis.