| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| hazards of hydrogen gas | 0.52 | 0.9 | 960 | 24 | 23 |
| hazards | 1.5 | 0.7 | 4797 | 74 | 7 |
| of | 0.04 | 0.5 | 8709 | 16 | 2 |
| hydrogen | 1.05 | 0.6 | 7488 | 41 | 8 |
| gas | 0.53 | 0.4 | 6521 | 39 | 3 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| hazards of hydrogen gas | 0.87 | 0.6 | 5065 | 72 |
| hydrogen gas hazards and precautions | 0.29 | 0.3 | 4269 | 19 |
| hydrogen gas safety hazards | 0.99 | 1 | 466 | 23 |
| hydrogen gas chemical hazards | 0.73 | 0.4 | 1146 | 16 |
| the hazards and risks of hydrogen | 0.1 | 0.9 | 8365 | 84 |
| how dangerous is hydrogen gas | 1.51 | 0.5 | 8345 | 91 |
| is hydrogen gas harmful | 0.95 | 0.9 | 1490 | 71 |
| what are the harmful effects of hydrogen | 0.72 | 1 | 9718 | 68 |
| is hydrogen gas harmful to humans | 0.01 | 0.1 | 3453 | 67 |
| is hydrogen gas toxic | 1.35 | 0.4 | 7248 | 33 |
| how dangerous is hydrogen fuel | 1.03 | 0.1 | 2987 | 40 |
| problems with hydrogen fuel | 0.45 | 0.9 | 4802 | 35 |
| issues with hydrogen fuel | 1.09 | 1 | 7707 | 84 |
| is breathing hydrogen gas harmful | 0.71 | 0.3 | 2401 | 85 |
| how dangerous is hydrogen | 1.1 | 0.3 | 9040 | 88 |
| hydrogen gas effect on humans | 1.38 | 0.2 | 347 | 99 |
| why is hydrogen dangerous | 0.61 | 0.3 | 7537 | 50 |
| the problem with hydrogen | 1.83 | 0.4 | 8767 | 41 |
