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प्रश्न
Tick (√ ) the most appropriate answer.
Galvanising is the process of coating iron with a layer of molten :
पर्याय
zinc
tin
copper
silver
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उत्तर
zinc
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संबंधित प्रश्न
A mixture of oxygen and carbon dioxide used for artificial respiration.
What is rust ?
Fill in the blanks :
Oxides of sulphur and nitrogen combine with rain water to form ___________ and _________ which cause ____________.
Write ‘True’ or ‘False’ in front of following statement.
Nitrogen is a gaseous non-metal essential for respiration.
State four ways of preventing rusting.
Write the balanced chemical equation of the manganese dioxide.
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.
In the laboratory preparation of oxygen from hydrogen peroxide answer the following:
State the method of collection of the oxygen gas giving reasons.
What is meant by burning?
