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प्रश्न
Define the term acid rain.
उत्तर
Acid rain : When sulphur trioxide and nitrogen oxide present in the air mix with rainwater they form sulphuric acid and nitric acid respectively. Rainwater containing these acids is called acid rain.
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संबंधित प्रश्न
State two differences between:
Rusting and burning.
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 __________________.
State two most important conditions for rusting.
Oxygen of the air is utilised for ‘combustiop’ and for ‘respiration’. Compare the two with a suitable examples.
Describe simple experiments to show the presence of -
water vapour in air using a glass tumbler and ice.
In the laboratory preparation of oxygen from hydrogen peroxide answer the following:
Draw a neat labelled diagram for the method used in the above preparation.
Give the main experimental points only to demonstrate that magnesium.
Name the following:
The gas required for both combustion and rusting.
What is meant by burning?
In Rockets, along with fuel, oxygen is also carried for combustion – why?
