Q. The volume of a gas at a given pressure and temperature is proportional to the number of atoms or molecules regardless of the nature of the gas. This concept is called as___?
Answer: Avogadro’s law
Notes: The correct answer is Avogadro's law. This law, formulated by Amedeo Avogadro in 1811, states that equal volumes of gases, at the same temperature and pressure, contain an equal number of molecules. This principle is foundational in chemistry and underpins the ideal gas law, which combines several gas laws, including Avogadro's, to describe the behavior of gases.