Probably a minuscule amount but if were above 0.1 parts per million they would not be allowed to market it. It is NOT allowed as an additive. Any that might be present would be as naturally occurring contaminant byproduct of chemical reactions occurring during the production of the beer - it would most likely be created by conversion of methanol contaminants - and the brewers certainly aren't going to permit any significant quantity of that in the first place. The other possible source would be if the water source got contaminated before it entered the brewery and the municipal water suppliers are regularly testing the water for contaminants - including formaldehyde - to prevent it from poisoning the population. In short - you probably won't find any more formaldehyde in your brewsky than you would in a glass of water from the tap in your own kitchen sink.
Note: It is known that some Chinese beers include some formaldehyde as preservative, but that is NOT permitted in the USA.
Where you poor beer from a fountain into a draft of beer (a glass)
Where you poor beer from a fountain into a draft of beer (a glass)
Not if it is a "proper beer"
no
What volume of beer? What brand?
Some people put salt in draft beer because it changes the taste.
There really is no difference between beer and draft. Draft can denote a form of beer deliver that is served from a tap which is connected to some kind of larger storage container, such as a half barrel, and served directly into a glass.
Draft
Cylinder. Think of a can, like a beer can hoisted up the mast. Some people remember "Can of draft beer".
The price of a draft beer was around $1 in 1989.
16 ounces
draft beer