The most convenient method to protect the bottom of ship made of iron is
- Coating it with Red lead oxide
- White tin plating
- Connecting it with Mg block
- Connecting it with Pb block
The Correct Option is C
Solution and Explanation
Top Questions on Electrochemistry
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(a) Current flows from cathode to anode
(b) Anode is positive terminal
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Questions Asked in NEET exam
- The magnetic moment of an iron bar is M. It is now bent in such a way that it forms an arc section of a circle subtending an angle of 60° at the centre. The magnetic moment of this arc section is
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Identify the major product C formed in the following reaction sequence:
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- Given below are certain cations. Using inorganic qualitative analysis, arrange them in increasing group number from 0 to VI.
A) Al3+
B) Cu2+
C) Ba2+
D) Co2+
E) Mg2+
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- Consider the following reaction in a sealed vessel at equilibrium with concentrations of
N2 = 3.0 × 10–3 M, O2 = 4.2 × 10–3 M and NO = 2.8 × 10–3 M.
2NO(g)⇋N2(g) + O2(g)
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Concepts Used:
Corrosion
Corrosion is a natural process that occurs when metal is exposed to the environment. It is the gradual destruction of metal through chemical reactions with the environment. The most common form of corrosion is the rusting of iron and steel, but other metals can corrode as well.
The corrosion process is influenced by several factors, including the type of metal, the environment, and the presence of oxygen, water, and other chemicals. The corrosion process can result in the loss of structural integrity and aesthetic appeal of metal objects.
There are several types of corrosion, including:
- Uniform corrosion: This is a type of corrosion that occurs uniformly over the surface of the metal.
- Pitting corrosion: This is a localized form of corrosion that creates small pits on the surface of the metal.
- Galvanic corrosion: This is a type of corrosion that occurs when two dissimilar metals are in contact with each other in the presence of an electrolyte.
- Crevice corrosion: This is a type of corrosion that occurs in narrow crevices, such as between two metal surfaces.
To prevent corrosion, various measures can be taken, including the use of corrosion-resistant metals and coatings, the removal of corrosive agents from the environment, and the use of cathodic protection.
Overall, corrosion is an important issue that can have significant economic and safety consequences. Understanding the causes and prevention of corrosion is essential for preserving the integrity and longevity of metal objects.