Tuberculin produced by the bacterium causing tuberculosis is

Which of the following is $NOT$ a symptom of pneumonia?

Ramji Kaka is suffering from pneumonia. Which organ of his body is infected?

Which of the following is a preventive measure to avoid $Pneumonia$?

Pneumonia is commonly seen in:

Assertion: $Escherichia$ $coli$,$Shigella$ $sp.$ and $Salmonella$ $sp.$ are all responsible for diarrhoeal diseases.
Reason: Dehydration is common to all types of diarrhoeal diseases and adequate supply of fluids and electrolytes should be ensured.