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151. The number of chamber in a human heart is:
  A.  Two
  B.  Four
  C.  Three
  D.  Five
     
   
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152. If the blood group of one parent is AB and that of the other O, the possilbe blood group of their child would be
  A.  A or B
  B.  A or B or O
  C.  A or AB or O
  D.  A or B or AB or O
     
   
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153. How many bones are there in the human body?
  A.  187
  B.  287
  C.  306
  D.  206
     
   
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154. The vitamin that helps to prevent infections in the human body is
  A.  Vitamin A
  B.  Vitamin B
  C.  vitamin C
  D.  vitamin D
     
   
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155. The normal RBC count in adult male is
  A.  5.5 million
  B.  5.0 million
  C.  4.5 million
  D.  4.0 million
     
   
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156. The H5N1 virus which causes bird flu was first discovered in
  A.  1991
  B.  1995
  C.  1997
  D.  2001
     
   
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157. Tetanus is caused by
  A.  Salmonella
  B.  Virus
  C.  Bacteriophage
  D.  Clostridium
     
   
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158. Birds usually have a single
  A.  Kidney
  B.  Ovary
  C.  Testis
  D.  Lung
     
   
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159. The carbon dioxide content in the air that we exhale is about
  A.  4 percent
  B.  8 percent
  C.  12 percent
  D.  16 percent
     
   
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160. In which vertebrate oxygenated and deoxygenated blood gets mixed?
  A.  Fish
  B.  Bird
  C.  Amphibian
  D.  Mammal
     
   
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