Eating away of iron due to rusting is called
(a) corrosion
(b) tinning
(c) alloying
(d) none of these

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Solution

(a) corrosion

Eating away of iron due to rusting is called corrosion.

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Fill in the following blanks with suitable words:
(a) The corrosion of iron is called....
(b) .....and .... are necessary for the rusting of iron.
(c) The process of depositing a thin layer of zinc on iron articles is called...
(d) Tiffin boxes are electroplated with .... but car bumpers are electroplated with .... to protect them from rusting.
(e) The corrosion of copper produces a .... coating of basic copper carbonate on its surface.
(f) Brass is an alloy of copper and....
(g) Bronze is an alloy of copper and....
(h) The non-metal present in steel is ...
(i) The alloy in which one of the metals is mercury is called an
(j) The electrical conductivity and melting point of an alloy is.... than that of pure metals.
(k) The rocky material found with ores is called....

Q. Fill in the following blanks with suitable words:
(a) The corrosion of iron is called ................
(b) ............ and .............. are necessary for the rusting of iron.
(c) The process of depositing a thin layer of zinc on iron articles is called .............
(d) Tiffin boxes are electroplated with .............. but car bumpers are electroplated with ............... to protect them from rusting.
(e) The corrosion of copper produces a .............. coating of basic copper carbonate on its surface.
(f) Brass is an alloy of copper and .........
(g) Bronze is an alloy of copper and .........
(h) The non-metal present in steel is ............
(i) The alloy in which one of the metals is mercury is called an ...............
(j) The electrical conductivity and melting point of an alloy is ........... than that of pure metals.
(k) The rocky material found with ores is called.............

The rusting of an iron object is called:

(a) corrosion and it is a physical as well as a chemical change

(b) dissolution and it is a physical change

(d) dissolution and it is a chemical change

Q. Iron pipes lying under acidic soil are often attached to blocks of magnesium for protection from rusting. Magnesium offers protection to iron against corrosion because it
a) Prevents air from reaching the surface of iron
b) is more readily converted into positive ions
c) forms a corrosion resistive alloy with iron

Q. Question 2
Rusting of an article made up of iron is called

(a) corrosion and it is a physical as well as chemical change
(b) dissolution and it is a physical change
(c) corrosion and it is a chemical change
(d) dissolution and it is a chemical change

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Eating away of iron due to rusting is called (a) corrosion (b) tinning (c) alloying (d) none of these

(a) corrosionEating away of iron due to rusting is called corrosion.

Eating away of iron due to rusting is called
(a) corrosion
(b) tinning
(c) alloying
(d) none of these

(a) corrosion

Eating away of iron due to rusting is called corrosion.