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प्रश्न
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.
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उत्तर
Preparation of oxygen from - H2O2
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संबंधित प्रश्न
What do you observe when Magnesium is heated and then tested with moist blue and red litmus – paper?
Fill in the blank by choosing the correct word from the given list.
List: oxygen, carbonic, suIphur dioxide gas, precipitation, helium
____________ gas can cause acid rain.
Write ‘True’ or ‘False’ in front of following statement.
The rust formed on the surface of iron easily crumbles.
State two most important conditions for rusting.
State four ways of preventing rusting.
Write the balanced chemical equation of the manganese dioxide.
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 -
oxygen and nitrogen component in air using a bell jar
Give reason for the following:
Acid rain has caused damage to heritage structures such as the Taj Mahal.
Name the following:
The pollutant which combines with water vapour to give sulphuric acid – a product of acid rain.
