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
25%
70%
5%
0%
20
flagItaly
31%
68%
0%
0%
29
flagFrance
35%
64%
0%
0%
17
flagNigeria
18%
63%
9%
9%
11
flagBelgium
20%
60%
20%
0%
10
flagGermany
30%
57%
6%
3%
102
flagthe Netherlands
46%
53%
0%
0%
26
flagPoland
34%
52%
8%
4%
7124
flagMalaysia
33%
50%
5%
11%
18
flagDenmark
43%
50%
0%
6%
16
flagthe United Kingdom
34%
49%
8%
6%
257
flagNorway
52%
47%
0%
0%
23
flagUU
42%
47%
5%
5%
19
flagthe United States
39%
42%
9%
8%
424
flagPakistan
42%
42%
0%
15%
19
flagUkraine
30%
40%
20%
10%
10
flagIndia
40%
38%
11%
8%
255
flagAustralia
48%
37%
5%
8%
37
flagthe Philippines
44%
37%
3%
10%
29
flagCanada
51%
31%
8%
8%
35

Gender

men53%
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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