General Knowledge - General Science - Discussion

Discussion Forum : General Science - Elements and Metals (Q.No. 21)
21.
When an iron nail gets rusted, iron oxide is formed
without any change in the weight of the nail
with decrease in the weight of the nail
with increase in the weight of the nail
without any change in colour or weight of the nail
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Discussion:
37 comments Page 1 of 4.

Sarat Mondal said:   4 years ago
Chemical sign of rust: Fe2O3, xH2O.
(1)

BIPI YADAV said:   5 years ago
Rust is nothing but the oxide of iron. When Fe comes into contact with moisture or air it gets rusted ie. Oxygen added to it and its weight is increased by the same amount as Oxygen is added.
(4)

Sam said:   6 years ago
Does the weight increase basically the strength should increase?
(2)

Adil Tanveer said:   7 years ago
Lossing of weight should be here because after the reaction the iron metal having the pores.

We cannot calculate with the atomic formulae like Fe2+O3=Fe2O3 and the weight as like the reaction iron and oxygen get combimned and due to which the weight wiil increased.
(1)

Sathersan said:   7 years ago
Lossing of weight.

Sanjeev said:   7 years ago
The rust material weight is decreases compared to its original weight. When oxygen react to fe the iron having pores and weight decrease. M very confuse for this question please clear this one.

Rakesh said:   7 years ago
Weight gets decreased since corrosion takes place.

Sri said:   7 years ago
How it increase the weight? Explain clearly.

Ashish said:   7 years ago
What is the correct answer?

S.vasanthi said:   7 years ago
It always increase because new element is joined.


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