Which of the following does not cause rusting of iron?

Which of the following does not cause rusting of iron? Correct Answer Vacuum

Air and moisture accelerate corrosion. The most important factor in atmospheric corrosion, overriding pollution or lack of it, is moisture. Presence of gases like SO2 and CO2 in air catalyse the process of corrosion. Iron, when placed in vacuum, does not rust.
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Related Questions

Which of the following statements are true with respect to iron ore?
I. Limestone and coal are important for smelting iron ore
II. More than 20% of the world iron ore deposits are in India
III. Odisha and Jharkhand top in the production of iron ore
IV. Iran is the largest buyer of Indian iron ore
Assertion A : Paints with white lead base are not recommended for painting of iron works.
Reason R : Paints with white lead base do not check rusting of iron.
Select your answer according to the coding system given below:
Out of the total production of iron from hematite, an ore of Iron, 20% of the ore gets wasted, and out of the remaining iron, only 25% is pure iron. If the pure iron obtained in a year from a mine of hematite was 80,000 kg, then the quantity of hematite mined from that mine in the year is
The process of coating iron or steel sheet with a thin coat of zinc to prevent iron from rusting is called ____________
Consider the following provision in Section 300 of the Indian Penal Code:
Several culpable states of mind are referred to with the:
1. intention to cause death
2. knowledge that the act is so imminently dangerous that it must in all probability cause death
3. intention to cause such bodily injury as the offender know to be likely to cause death of the person to whom harm is caused
4. intention of causing such bodily injury as is sufficient in ordinary course of nature to cause death.
The correct order of the sequence in which they are placed in the provision is:
Which of the following factor does not contribute to the rusting of iron?
X' agreed to supply 1000 tons of iron at Rs. 100 per ton to 'Y' to be delivered not later than 31st January, 2002. 'X' also entered into a contract with 'A' for purchase of 1000 tons of iron at Rs. 80 per ton telling 'A' clearly that the iron is needed before 31st January, 2002 for supply to 'Y' to fulfil the contract with Y. 'A' fails to supply the iron to 'X' who in tum failed to supply the same to 'Y'. In an action by 'X' against 'A'.
Where does corrosion occurs in the rusting of iron?
An iron blast furnace produces hot metal containing 95% Fe. The iron ore charged into the furnace contains 95% Fe2O3 and the rest is gangue. Assume that all the iron in the ore goes to hot metal. The amount of iron ore (in kg) required for producing 1000 kg of hot metal is (Atomic weight of Fe = 56 g mol-1 and that of Fe2O3 = 160 g mol-1)
Which of the following causes the rusting of iron?
a. Oxidation
b. Reduction
c. Chemical reaction with oxygen
d. Chemical reaction with CO2