Worksheetsair around us
Total questions: 15
Worksheet time: 3mins
Major part of the air is constituted by
oxygen
inter gases
nitrogen
carbon dioxide
Wind is -
air around us
air in motion
rising hot air
none of these
air is present in
atmosphere
soil
water of ponds lakes and seas
everywhere
air is
a mixture
a pure substance
an element
anything that depends on the place where it is found
Moving air is called
dust
smoke
wind
nitrogen
properties of oxygen gas is
colourless
tasteless
odourless
all of these
The composition of nitrogen gas in the atmosphere is
21%
78%
1%
0.01%
Air is considered to be
a compound
a mixture
an element
a solvent
air is a (a) of gases
(a) is the layer of air around the earth
(a) gas helps in burning
air is (a)
air is a mixture of gases
true
false
air in motion is called wind
true
false
oxygen constitutes 21% of the air
true
false
