Advertisements
Advertisements
प्रश्न
Oxygen of the air is utilised for ‘combustiop’ and for ‘respiration’. Compare the two with a suitable examples.
उत्तर
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
संबंधित प्रश्न
Define the term acid rain.
What do you observe when Magnesium is heated and then tested with moist blue and red litmus – paper?
Fill in the blank space by choosing the correct word from the given list.
List: sulphurous, nitric acid, red lead oxide paint, oxygen, phosphoric
To prevent rusting, the underside of the ships is coated with __________________.
How will you prove that oxide formed by burning sodium is basic in nature?
What is rusting?
State two most important conditions for rusting.
State how nitrogen is utilised by plants for their growth. Give a reason why nitrogen is used in flushing food packages.
In the laboratory preparation of oxygen from hydrogen peroxide answer the following:
State the word equation for the reaction involving the above preparation of oxygen.
Give reason for the following:
Acid rain has caused damage to heritage structures such as the Taj Mahal.
What is meant by burning?
