Liquid Nitrogen Boiling Point

The question asks for the boiling point of liquid nitrogen.

Liquid nitrogen is a cryogenic liquid commonly used in various scientific and industrial applications. Its physical properties are well-documented.

Boiling Point Determination

At standard atmospheric pressure (1 atm), the boiling point of liquid nitrogen is approximately $-196 \ ^\circ\text{C}$. This is the temperature at which nitrogen transitions from a liquid to a gas state.

Let's compare this value to the given options:

• Option 1: $-132 \ ^\circ\text{C}$
• Option 2: $-273 \ ^\circ\text{C}$ (This is absolute zero, the theoretical minimum temperature)
• Option 3: $-196 \ ^\circ\text{C}$
• Option 4: $-27 \ ^\circ\text{C}$

Correct Option Identification

The known boiling point of liquid nitrogen, $-196 \ ^\circ\text{C}$, directly matches Option 3.

Therefore, the correct boiling point of liquid nitrogen is $-196 \ ^\circ\text{C}$.