Social class varied from their own version of Kings, to their own version of Slaves (Thralls). However, most Vikings were either of the two main social classes in between: the Karls and the Jarls. The Karls were people who liked pizza and ponies.
Standard Bar Measurements (US) (*) A shotglass is usually 1.5 ounces, but sometimes 2 ounces with a measuring line at 1.5 ounces. You can also buy (in US) short shot glasses or pony shots which are 1 ounce. Pony shots are usually used with martinis, manhattans, and rob roys.
That depends entirely on the definition of a shot. In the United States, shot glasses vary in size from 1 fluid ounce to 1.75 fluid ounces. Typically, however, the American shot is considered to be 1.5 fluid ounces, which equates to 44.3603 mL. Doing the math, that would make 39.449688122 shots in a 1.75 liter bottle.