General Knowledge Quiz Contest (115) - Participate By Giving Answer

[annadoll]

Hello friends,

This is General Knowledge Quiz Contest - 115.

Test your General Knowledge participating by giving answer in comment.

Question:

What can blue john be used for?

Options:

A
Coating steel, particularly gun barrels, to protect from rust
B
Whitening clothes being washed
C
Storing Johnnie Walker blue label whisky
D
Jewellery, drinking vessels, vases

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Comments

[annadoll]

Correct Answer: D - Jewellery, drinking vessels, vases

Blue John is a form of fluorite banded in purple-blue or a yellowish colour, a hard semi-precious mineral. It is found near Castleton, Derbyshire, UK, where it has been mined since at least the 18th century, and apart from a similar banded fluorite recently found in China it is the only source of this particular banded fluorite. Blue-john is also a term sometimes used for skim milk or milk which is beginning to sour.

[robiney]

I believe it's letter D. Hope i'm right. :)

[annadoll]

Correct Answer! @robiney

[robiney]

Yey! I'm feeling lucky. 😊

[shintamonica]

Good...

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[gene87]

Im not sure but i think its D...

[upmyvote]

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