MCQ Questions for Class 6 Science Chapter 15 Air Around Us with Answers 1. Major part of the air is constituted by nitrogen oxygen carbon dioxide inert gasesQuestion 1 of 102. Which of the following gas helps in burning? Nitrogen Oxygen Carbon dioxide Carbon monoxideQuestion 2 of 103. Which of the following gas we use in breathing? Carbon dioxide Nitrogen Oxygen None of theseQuestion 3 of 104. Wind is air around us rising hot air air in motion none of theseQuestion 4 of 105. Air is present in atmosphere soil water of ponds, lakes and seas everywhereQuestion 5 of 106. Air is a mixture a pure substance an element anything, that depends on the place where it is foundQuestion 6 of 107. Envelope of air that surrounds the earth is known as biosphere atmosphere environment ecosystemQuestion 7 of 108. Which is not a property of air? It occupies space. It occupies space. It is a solution. It is a compound.Question 8 of 109. The ratio of nitrogen to oxygen in the air is 1:4 4:1 3:1 1:2Question 9 of 1010. The main constituent of the air is. nitrogen oxygen carbon dioxide hydrogenQuestion 10 of 10 Loading…