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प्रश्न
State two characteristics of Basic oxides.
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उत्तर
Basic oxide
- Formed when metals are burnt in air
- turn red litmus to blue.
eg. potassium oxide [K2O]
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संबंधित प्रश्न
A chemical called oxygenated water.
An oxide and a carbonate containing oxygen.
Taking hydrogen peroxide, how would you prepare oxygen in the laboratory ?
What is the role of manganese dioxide in the preparation of oxygen?
Fill in the blank space by choosing the correct word from the given list.
List: sulphurous, nitric acid, red lead oxide paint, oxygen, phosphoric
Phosphorus pentaoxide on dissolving in water forms _________ acid.
(a) Starting from hydrogen peroxide how is oxygen gas prepared in laboratory?
(b) What is the function of manganese dioxide?
(c) Write fully balanced equation for the liberation of oxygen from hydrogen peroxide.
(d) Why is the above method preferred to any other method?
State three uses of oxygen, other than artificial respiration.
Give reason for the following:
Oxidation of sulphur results in a product which turns moist blue litmus red.
Oxygen is a poor conductor of heat and electricity.
Write a note on the rusting process.
