In which disease is there an uncontrolled division of cells resulting in formation of tumours? How is this disease detected?

Which disease is caused by air pollution?

Which disease is characterized by yellowing of skin ?

For which disease, widal test is employed?

Which disease is generally fatal among non-infectious diseases?

How does elephantiasis disease spread?

Give full name of human disease and its pathogen in which body loses its general immunity towards infection. How is this disease transmitted.