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प्रश्न
Give a reason why oiling or greasing is done on the exposed moving iron parts of machinery and not preferred on heavy stationary iron parts.
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उत्तर
Oiling or greasing is done on the exposed moving iron parts of machinery to avoid rusting and reducing friction whereas it is not preferred on heavy stationary iron parts as red lead oxide paint is used in heavy stationary iron.
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संबंधित प्रश्न
Give two examples of metallic oxides.
Which one of the following is most likely to be corroded?
State why galvanization, tinning and chromeplating are used as three different processes for coating specific articles for prevention of rusting.
State a specific reason for using zinc in galvanizing
State a specific reason for using magnesium in fireworks.
Give reason for the following:
Galvanized steel is not used for articles used for edible applications.
Give word equation for the reaction of Non-metal:
carbon
Give word equation for the reaction of metal is:
calcium
Give word equation for the reaction of metal is:
magnesium with oxygen
Name the following:
The chemical name of rust.
