Acquired, symmetric hyper pigmentation of the sun exposed skin of the face & neck which is strongly associated with pregnancy & use of oral contraceptives is called as________?

The dentist who first used Nitrous oxide for the abolition of pain due to dental extraction was________?

Which of the following is a first generation oral cephalosporin________?

Organ of locomotion in bacteria is________?

One of them is not a true cyst:________?

In children the most frequently missing permanent teeth are________?