Advertisements
Advertisements
प्रश्न
Fill in the following blank with suitable word:
The process of depositing a thin layer of zinc on iron articles is called .............
Advertisements
उत्तर
The process of depositing a thin layer of zinc on iron articles is called galvanization.
APPEARS IN
संबंधित प्रश्न
Tinning : Tin : : Galvanizing : _________
Explain why rusting of iron objects is faster in coastal areas than in deserts.
Fill in the following blanks with suitable words:
Tiffin boxes are electroplated with .............. but car bumpers are electroplated with ............... to protect them from rusting.
Fill in the following blank with suitable word:
The corrosion of copper produces a .............. coating of basic copper carbonate on its surface
In stainless steel alloy, iron metal is mixed with:
(a) Cu and Cr
(b) Cr and Ni
(c) Cr and Sn
(d) Cu and Ni
Bronze is an alloy of ______.
What is corrosion? What are necessary conditions for corrosion?
Corrosion can be an advantage in some case.Explain ?
Choose the correct alternative and rewrite the following:
Iron is _____________________.
Write three methods of preventing rusting of iron.
Give reason.
A wooden article should be polished.
Explain the term – rusting and give a word equation for the formation of rust. If polished iron nails are kept in three separate test tubes, state the contents in each test tube required, to prove the conditions for rusting.
Corrosion of silver causes a black layer of _______.
To prevent corrosion of iron and steel _______ method is used.
Draw a neat labelled diagram.
Electroplating
Draw a neat labelled diagram.
Anodizing
Observe the following diagram and give answers.
- Name this method of prevention of corrosion.
- For prevention of which metal this method is used?
- What is used as anode in this method?
Marble’s popularity began in ancient Rome and Greece, where white and off-white marble were used to construct a variety of structures, from hand-held sculptures to massive pillars and buildings.
The substance not likely to contain CaCO3 is:
Explain the following:
Lime water turns milky on passing carbon dioxide gas into it.
