Which of the following substances is not found in a clean air sample?
Air is made up of nitrogen, oxygen, carbon dioxide and noble gases. Helium is a noble gas. Hydrogen does not belong to any of these categories.
2091 MCQ for effective preparation of the test of Atmosphere of General Knowledge section.
Read the MCQ statement: Which of the following substances is not found in a clean air sample? , keenly and apply the method you have learn through the video lessons for Atmosphere to give the answer. Record your answer and check its correct answer and video explanation for MCQ No. 1077-6336.