Above graph is plotted for CO₂ at three different temperature i.e., 273K, 1273 K and 2773 K. Which of the following option is correct about these temperatures? T1 T2 T3 (a) 273 K 1273 K 2773 K (b) 2773 K 1273 K 273 K (c) 1273 K 2773 K 273 K (d) 2773 K 273 K 1273 K

According to Maxwell distribution of gas molecules, the most probable velocity of gases rises with temperature. Remember that flat curve is associated with high temperature and sharp curve for low temperature. Therefore, correct order of temperature is, 1T 2 T 3T 273 K 1273 K 2773 K Thus, (a) is correct option.