1) which of the following is the most abundant gas in the air air a) nitrogen b) oxygen 2) which of the following is needed by plants to prepare food o prepared food a) hydrogen b) Carbon dioxide 3) which of the following helps in carrying oxygen to the different parts of the body a) Blood vessels b) lungs 4) which of the following gas makes the solid fertile a) Nitrogen b) oxygen 5) it froms rain on condensation a) water vapour b) oxygen 6) It released by plants during photosynthesis a) Oxygen b) carbon dioxide 7) it is covered by bacteria into a solid form a) nitrogen b) oxygen 8) it is released by living things during the process of breathing a) carbon dioxide b) nitrogen 9) iam most plentiful gas in the atmosphere and used by the bacteria in the soil which gas ami a) oxygen b) nitrogen 10) moving air a) wind b) photoplanktons 11) plantsuse it to prepare food a) carbondioxide b) wind 12) component that helps plants grow a) nitrogen b) corbondioxide 13) we are able to smell room fresher because a) air has weight b) air expands 14) which of the following is the correct statement about air a) Air expands on heating b) Air expands on cooling 15) which of the following is released when animals die and decay a) nitrogen b) carbon dioxide 16) which of the following components of air supports burning a) oxygen b) nitrogen 17) tiny Ocean plants a) phytoplanktons b) nitrogen 18) nitrogen helps plants grow a) true b) false 19) air takes the shape of the container a) false b) true 20) moving air is required for drying cloths and flying kites a) true b) false 21) air does not have weight a) false b) true

3rd science

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