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This question belongs to Chemistry GK Chapter Wise Thermochemistry

Thermochemistry

?

When items of jewellery made of metals such as copper or nickel are placed in a solution having a salt of gold, a thin film of gold is deposited by

A) cooling to below 0°C B) heating above 100°C C) passing an electric current D) just keeping it for 10 min

Answer & Solution

Correct Answer: Option C

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Question posted by Examveda

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