Emphysema is a chronic disorder caused by which of the following?

Select the correct match of disease and its symptom.

In heavy smokers,the alveoli of the lungs are enlarged and damaged,which reduces the surface area for the exchange of respiratory gases. This condition is called:

$A$ person involved in stone masonry work is likely to suffer from . . . . . . .

If the thoracic wall but not the lungs in man is punctured,what will be the immediate effect?

Which of the following is an occupational respiratory disorder?