Which gas is colorless and odorless?
ozone
methane
benzene
ammonia
Methane is the main component of natural gas piped into homes for domestic heating and cooking purposes. In order to assist in detecting leaks, a sulphur-like odorant is added the gas used by consumers.
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Answers by country
ozone
methane
benzene
ammonia
answers
Romania
11
Switzerland
18
Greece
16
Poland
10366
the United Arab Emirates
12
the United Kingdom
209
Australia
72
Unknown
37
Nigeria
68
Germany
155
the United States
579
Pakistan
66
the Netherlands
17
India
568
Ghana
13
Canada
43
Malaysia
27
Austria
27
the Philippines
57
Singapore
21