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
flagUkraine
23%
7%
69%
0%
13
flagthe Netherlands
17%
12%
66%
2%
39
flagAustralia
10%
8%
64%
16%
37
flagNorway
16%
8%
60%
12%
25
flagFrance
10%
25%
60%
5%
20
flagthe United Arab Emirates
21%
7%
57%
14%
14
flagthe Philippines
24%
13%
56%
2%
37
flagPakistan
17%
19%
55%
6%
47
flagRepublic of Ireland
15%
23%
53%
7%
26
flagMalaysia
11%
7%
53%
26%
26
flagthe United States
20%
11%
52%
14%
542
flagthe United Kingdom
15%
15%
52%
16%
338
flagPoland
22%
13%
52%
12%
10772
flagIndia
21%
16%
50%
9%
322
flagGermany
21%
13%
49%
13%
117
flagNigeria
35%
14%
46%
0%
28
flagSingapore
21%
14%
42%
21%
14
flagUnknown
31%
11%
41%
15%
646

Gender

men47%
women51%
Sprite
24%
20%
milk
15%
14%
tonic water
47%
51%
pineapple juice
13%
14%

Language versions

question
answers
results
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Which beverage is is fluorescent in UV light?
1483
53%

Details

Author: Luca Biaggi
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