____________ showed that air mainly consists of oxygen and nitrogen gases.
Antoine Lavoisier
Daniel Rutherford
Joseph Priestley
Coral scheel
_____________ present in air is a supporter of combustion .
Nitrogen
Carbon dioxide
Argon
Oxygen
____________ in the plants takes place through roots, stems and leaves.
Respiration
Oxidation
Reduction
Aeration
___________ is used on stage to produce the effect of clouds.
Carbon dioxide gas
Solid carbon dioxide
Liquid ammonia
Liquid Oxygen
____________ is used in aerated drinks.
Hydrogen
Sulphur dioxide
Carbondioxide gas
________ is a chemical based product.
Super conductors
Energy
Matter
Fuel
The process of taking oxygen into cell using it for producing energy and removing the gaseous waste products is termed as
Transpiration
Evaporation
Air can be liquefied by cooling under
Low pressure
High pressure
Atmospheric pressure
High temperature
___________ is also called internal respiration.
Breathing
Cellular respiration
Burning
