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Class 11BiologyBreathing and Exchange of GasesDisorders of respiration system
Medium

Asthma is a respiratory disease caused by

  • A
    Infection of trachea
  • B
    Infection of lungs
  • C
    Bleeding into pleural cavity
  • D
    Spasm in bronchial muscle
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Class 11 Questions

Class 11

Biology Questions

Chapter

Breathing and Exchange of Gases

Subtopic

Disorders of respiration system

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