Question 315General Subjects - Assistant Engineer

The correct answer is C: For a given mass of a gas, the volume is inversely proportional to its pressure and directly proportional to its temperature. This statement represents the ideal gas law, which is a fundamental relationship in thermodynamics that describes the behavior of gases. The ideal gas law states that the pressure, volume, and absolute temperature of a gas are related by the equation PV = nRT, where P is pressure, V is volume, n is the number of moles of the gas, R is the universal gas constant, and T is the absolute temperature. The other options are incorrect because they do not accurately represent the relationships between the variables in the ideal gas law. Option A is incorrect because the volume is inversely proportional to pressure, not directly proportional. Option B is incorrect because the volume is directly proportional to temperature, not inversely proportional. Option D is incorrect because the volume is directly proportional to pressure, not inversely proportional.