Common cold is not cured by antibiotics because it is

Common cold is not cured by antibiotics because it is
  1. caused by a virus
  2. caused by a Gram positive bacterium
  3. caused by a Gram negative bacterium
  4. not an infectious disease

Solution

Common cold is not cured by antibiotics because it is caused by a virus, called rhinovirus.

Asked in: NEET 2011 (Mains)

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