Class XI

Oxygenated blood is brought to heart through
  1. lungs
  2. pulmonary artery
  3. pulmonary vein
  4. pulmonary arch
Crocodiles are
  1. poikilothermic
  2. homoeothermic
  3. heteroeothermic
  4. hypoeothermic
Composition of oxygen (O2) in inspired air is approx.
  1. 0.21
  2. 0.165
  3. 0.78
  4. 0.9
Beriberi disease is caused due to constant use of
  1. white rice and fish
  2. white rice and chicken
  3. brown rice and fish
  4. brown rice and mutton
Galactose (C6H12O6) is a components of
  1. glucose
  2. lactose
  3. sucrose
  4. fructose
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