Advertisements
Advertisements
Question
Oxygen of the air is utilised for ‘combustiop’ and for ‘respiration’. Compare the two with a suitable examples.
Solution
Oxygen is essential for burning of all components since it supports combustion, oxygen is also essential for respiration of all living things on the earth, it is utilised for respiration.
Burning of a candle involves oxidation of the carbon & hydrogen present in the candle resulting in the formation of carbon dioxide, water vapour and energy in form of heat and light.
Respiration involves oxidation of the carbon & hydrogen present in food materials resulting in formation of carbon dioxide, water vapour and energy in the form of heat.
APPEARS IN
RELATED QUESTIONS
A metal highly resistant to rusting.
A mixture of oxygen and carbon dioxide used for artificial respiration.
Tick (√ ) the most appropriate answer.
Galvanising is the process of coating iron with a layer of molten :
In the laboratory preparation of oxygen from hydrogen peroxide answer the following:
Name the catalyst used in the preparation and state it’s function.
In the laboratory preparation of oxygen from hydrogen peroxide answer the following:
State the method of collection of the oxygen gas giving reasons.
Distinguish between:
Combustion & Rusting with suitable word equations only?
Give the main experimental points only to demonstrate that candle-gains weight on burning.
Give reason for the following:
Combustion and respiration show similarity.
In Rockets, along with fuel, oxygen is also carried for combustion – why?
A process without emitting flame is called as ______.
