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1 . Which of the following metals forms an amalgam with other metals?
A. Tin B. Mercury
C. Lead D. Zinc

2 . The confirmatory test for HIV virus causing AIDS is:
A. CDR count B. Western blot test
C. ELISA test D. PCR

3 . Micro-organisms are seen only with-
A. Open eye B. Naked eye
C. Microscope D. None

4 . Viruses are-
A. Complete saprophytes B. Partial parasites
C. Partial saprophytes D. Total parasite

5 . The discovery of viruses was made by-
A. Ivanowski B. Beijerinck
C. Miller D. Stanley