Which of the follwing gas given off in a fire is most commonly known to cause metabolic poisoning?

Surgery

Which of the follwing gas given off in a fire is most commonly known to cause metabolic poisoning?

A tender swelling in submandibular triangle is mostly likely diagnosed as

In transfacial proportions, the face Is divided into how many segments:

Specific for Ankylosing spondylitis is true?