Gold does not corrode. Despite this, gold ornaments start showing patches of other color after repeated use. Why?
Asked by Topperlearning User
| 22nd Nov, 2013,
01:37: AM
Expert Answer:
Most ornaments that appear to be made of gold are actually made of other metal and only coated with gold. After repeated use, the gold layer tends to peel off in patches and the metal underneath, which is of a different color starts to show.
Answered by
| 22nd Nov, 2013,
03:37: AM
- define a cell
- Why electricity can pass through conducter, not by insulator??
- What is electroplating? How will you carry out electroplating of copper in the laboratory.
- Write short note on. Electroplating
- Mention the components of the circuit of tester
- How is electroplating used to save iron from corrosion?
- How will you identify the positive terminal of a battery if it is hidden in a box and you can only see two of its leads.
- During electroplating, initially some bubbles were appearing near an electrode. After 30 mins, no bubbles appear. What do you conclude from this?
- How will you modify an electroplating circuit to clearly indicate that the electroplating process is over?
Kindly Sign up for a personalised experience
- Ask Study Doubts
- Sample Papers
- Past Year Papers
- Textbook Solutions
Sign Up
Verify mobile number
Enter the OTP sent to your number
Change