Sprinkling oil over ponds would control malaria because
Fishes die
Water gets polluted
Larvae are asphyxiated
Mosquitoes are repelled
Which of the following toxic substances is responsible for the high malarial fever?
What precautions should be taken to avoid smoking ?
Infection of pneumonia occurs due to
Leprosy is diagnosed by which of the following set of symptoms
The immunoglobulin abundant in colostrums is