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प्रश्न
State at least two ways of prevent rusting.
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उत्तर
Two ways of prevention of rusting :
- Painting with red lead.
- Oil paint is applied on doors and windows.
- Enamel coating. Enamel is a mixture of iron, and steel with silicates.
- Coal tar it is used for coating the lower parts of ships and bridges.
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संबंधित प्रश्न
A metal highly resistant to rusting.
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.
Write fully balanced equation for the following :
MgO + H2O →
State four ways of preventing rusting.
State how nitrogen is utilised by plants for their growth. Give a reason why nitrogen is used in flushing food packages.
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 -
water vapour in air using a glass tumbler and ice.
Name the following:
The pollutant which combines with water vapour to give sulphuric acid – a product of acid rain.
In Rockets, along with fuel, oxygen is also carried for combustion – why?
