Question

The iron knife shine better after cutting the sour fruits. Give scientific reason.
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Answer 1

Answer:

The iron knife shines better after cutting the sour fruits like lemon, raw mango. Thereby, it acts as a chelating agent on traces of metals like iron. So, when iron comes in contact with this type of acids, they react with them. This gives the iron knife more shine on reaction with those acids.

Explanation:

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Answer 2

Answer:

Its bcoz sour fruits have mostly citric acid in them which acts as a cleaning agent and shining agent for the knives.therefore it is bcoz of the organic acids

Explanation:

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