Unit of gas bill is:

🧠 Explanation:

The unit for a gas bill is the British Thermal Unit (BTU), measuring the energy content of natural gas used for heating or appliances. BTUs quantify heat energy, helping calculate consumption and costs. Understanding BTUs is key in energy management, ensuring accurate billing and efficient use in households or industries. This unit is widely used globally, particularly in energy sectors, making it a critical concept in economics, environmental science, and utility management for sustainable resource consumption.