Which beverage is is fluorescent in UV light?

Sprite
milk
tonic water
pineapple juice
Tonic water is trans­par­ent in day­light. Under ul­tra­vi­o­let light, the quinine makes it flu­o­res­cent (pic­tured), even though it is present in a neg­li­gi­ble con­cen­tra­tion.

Answers distribution

Sprite
milk
tonic water
pineapple juice
answers
flagCanada
17%
2%
74%
5%
39
flagItaly
16%
3%
70%
9%
31
flagthe Netherlands
19%
11%
66%
2%
36
flagIndonesia
8%
0%
66%
25%
12
flagAustralia
10%
8%
64%
16%
37
flagNorway
13%
4%
63%
13%
22
flagFrance
11%
22%
61%
5%
18
flagthe United Arab Emirates
21%
7%
57%
14%
14
flagthe Philippines
25%
13%
55%
2%
36
flagRepublic of Ireland
15%
23%
53%
7%
26
flagthe United Kingdom
16%
14%
52%
16%
327
flagPakistan
19%
19%
52%
5%
36
flagMalaysia
12%
8%
52%
28%
25
flagPoland
22%
13%
51%
12%
10363
flagthe United States
20%
11%
51%
14%
536
flagIndia
21%
16%
50%
9%
302
flagGermany
21%
13%
50%
14%
114
flagNigeria
38%
15%
42%
0%
26
flagSingapore
21%
14%
42%
21%
14
flagUnknown
31%
11%
41%
15%
611

Gender

men47%
women51%
Sprite
23%
20%
milk
15%
14%
tonic water
47%
51%
pineapple juice
12%
14%

Language versions

question
answers
results
flag
Which beverage is is fluorescent in UV light?
1417
53%

Details

Author: Luca Biaggi
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