Question

Addition of which of the following during manufacturing results in blue colour of the glass?

• A. Nickel Salt
• B. Cobalt Salt
• C. Manganese Salt
• D. None of these

Answer 1

The correct option is A

Nickel Salt

Glasses are usually transparent. But they can also be coloured by adding few impurities at the time of manufacturing. After that they can be used in many deocrative applications.

If Nickel Salt is added during manufacturing, it results in blue colour.

If Cobalt Salt is added, it results in red colour.