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.

Answers distribution

ozone
methane
benzene
ammonia
answers
flagRepublic of Ireland
26%
73%
0%
0%
19
flagItaly
31%
68%
0%
0%
29
flagNigeria
18%
63%
9%
9%
11
flagBelgium
20%
60%
20%
0%
10
flagCzech Republic
30%
60%
0%
0%
10
flagGermany
31%
55%
7%
4%
97
flagthe Netherlands
45%
54%
0%
0%
22
flagFrance
46%
53%
0%
0%
13
flagPoland
34%
52%
8%
4%
6760
flagthe United Kingdom
34%
50%
8%
5%
244
flagMalaysia
33%
50%
5%
11%
18
flagDenmark
42%
50%
0%
7%
14
flagNorway
52%
47%
0%
0%
23
flagPakistan
44%
44%
0%
11%
18
flagthe United States
39%
42%
9%
8%
407
flagthe Philippines
46%
39%
0%
10%
28
flagIndia
39%
38%
12%
8%
246
flagAustralia
48%
37%
5%
8%
37
flagCanada
51%
33%
6%
9%
33

Gender

men54%
women49%
ozone
33%
37%
methane
54%
49%
benzene
8%
8%
ammonia
3%
4%

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Which gas is colorless and odorless?
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Author: Kasia
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