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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
State two differences between:
Rusting and burning.
Fill in the blanks :
Oxides of sulphur and nitrogen combine with rain water to form ___________ and _________ which cause ____________.
State and explain two ways by which air gets polluted in nature.
What happens when Sodium burns in oxygen ? Also give the balanced chemical equation for the reaction.
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
Describe simple experiments to show the presence of -
carbon dioxide in air using a test tube with outlets containing lime water.
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.
Name the following:
The gas required for both combustion and rusting.
