Class 11 Chemistry States of Matter Gases !!! Important multiple choose questions: At absolute zero , molecules of hydrogen gas has energy: 1.Translational only 2.Rotational only 3.Vibrational only 4.None of these Answer ) None of these Brief Explanation : Absolute zero is the lowest possible temperature at which no gas can exist in gaseous state.Class 11 Chemistry States of Matter Gases Important mcqs for Exams