Liquid Nitrogen boils at A. 77 kelvin B. 82 Kelvin C. 54 kelvin D. 97 Kelvin

The correct answer is A. 77 Kelvin.

Liquid nitrogen is a cryogenic liquid with a boiling point of 77.36 kelvins (-195.79 °C or -320.42 °F). It is a colorless, odorless, and non-flammable liquid that is used in a variety of applications, including cryotherapy, medical research, and manufacturing.

Option B is incorrect because the

Option C is incorrect because the boiling point of liquid nitrogen is 77.36 kelvins, not 54 kelvins.

Option D is incorrect because the boiling point of liquid nitrogen is 77.36 kelvins, not 97 kelvins.