Which gas is released by plants during night?
Nitrogen
Oxygen
Carbon dioxide
Hydrogen
How the smell of a lighted incense stick and fills the entire house?
Air occupies space
Air exerts pressure
Air spreads in all direction
Air has weight
The gas that is largely present is air is _______
Name the gas which released by man during expiration?
Carbondioxide
People who dive into deep sea will carry a cylinder, what does it contain?
Windmills are used to produce______
Air
Wind
Water
Electricity
Among the following which is an inert gas?
Xenon
Neon
B & C
Identify the principle used to suck cool drinks using a straw?
Atmosphric pressure
Atmospheric weight
Air occupancy
Air conductivity
The gas used for respiration of living things is ______
inert gases
carbondioxide
Which gas is used for the production of manure?
CO2