1 area of surface
2 wind speed
3 inccreased temprature
4 less amount of water vapours in air
hope it helps u..✌✌
1. decrease in humidity
2. increase in wind speed
3. increase in surface area
Coating of metals with paint, oil, grease or varnish prevents the corrosion of metals.
Coating of corrosive metals with non-corrosive metals also prevents corrosion. Some of the methods by which metals can be coated with non-corrosive metals are:
Galvanizing: It is process of giving a thin coating of zinc on iron or steel to protect them from corrosion. Iron is galvanized by dipping it in molten zinc. It is then taken out and allowed to cool. Galvanizing is an effective methods of protecting steel because even if the surface is scratched, the zinc still protects the underlying layer.
Tinning: It is the process of giving a coating of tin, i.e., molten tin. Cooking vessels, made of copper and brass get a greenish coating due to corrosion. This greenish coating is poisonous. Therefore they are given a coating of tin to prevent corrosion.
Electroplating: In this method of a metal is covered with another metal using electrolysis. Silver-plated spoons, gold-plated jewelry, etc, are electroplated.
Anodizing: In this method metals like copper and aluminum are electrically coated with a thin strong film of their oxides. This film protects the metals from corrosion.
Alloying: Corrosion can be also prevented by alloying some metals with other metals. The resultant metals called alloys do not corrode easily, e.g. stainless steel.
Factors that affect corrosion =
Impurities of metals
Reactivity of metals
Presence of electrolytes.
Methods to prevent corrosion =
Hope it helps u dear :-)
is probably the most common phospholipid. it is found in egg yolks, wheat germ, and soybeans. contains the ammonium salt of choline joined to the phosphate by an ester linkage. the nitrogen has a positive charge, just as in the ammonium
find the compound interest at the rate of
16% per annum for 2 years on a certain
sum of money, gives 2400 simple
interest in 4 years at the rate of 6% per