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Biology
Body Fluids and Circulation
CBSE
Class 11
Biology
Class 11 - Biology
Body Fluids and Circulation
MCQ
Q&A
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1.
The second heart sound (dubb) is associated with the closure of
a.
tricuspid valve
b.
semilunar valves
c.
bicuspid valve
d.
tricuspid and bicuspid valves.
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