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
flagItaly
14%
3%
74%
7%
27
flagCanada
18%
2%
72%
5%
37
flagthe Netherlands
19%
6%
70%
3%
31
flagNorway
9%
4%
66%
14%
21
flagIndonesia
8%
0%
66%
25%
12
flagAustralia
11%
8%
65%
14%
35
flagthe Philippines
18%
15%
59%
3%
32
flagRepublic of Ireland
17%
17%
56%
8%
23
flagMalaysia
8%
8%
56%
26%
23
flagUnknown
19%
11%
55%
13%
68
flagFrance
13%
26%
53%
6%
15
flagthe United Arab Emirates
23%
7%
53%
15%
13
flagPoland
20%
13%
52%
12%
8028
flagthe United Kingdom
16%
15%
52%
15%
291
flagthe United States
21%
11%
51%
14%
520
flagIndia
20%
16%
51%
9%
280
flagPakistan
21%
18%
51%
6%
33
flagGermany
20%
14%
49%
15%
100
flagSingapore
16%
16%
41%
25%
12
flagNigeria
36%
18%
40%
0%
22

Gender

men52%
women53%
Sprite
18%
19%
milk
16%
13%
tonic water
52%
53%
pineapple juice
12%
13%

Language versions

question
answers
results
flag
Which beverage is is fluorescent in UV light?
1330
53%

Details

Author: Luca Biaggi
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