alleryDepositing a layer of molten tin on a metal surface, popularly called 'kalhaee', is known as what?
AGalvanizing
BTinning
CAnodization
DAlloying
Answer & Solution
Correct answer: B. Tinning
1. A poisonous greenish layer can form on copper or brass vessels.
2. To prevent this, a layer of molten tin is deposited on the metal.
3. This process is called tinning, popularly known as kalhaee.
4. Galvanizing uses zinc on iron, so it does not describe the tin coating.
_Source: Balbharati (Maharashtra Board) Class 10 Science & Technology, Ch 8 "Metallurgy", p.116_
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