Chemistry
Fill in the blanks:
(a) …………… is the most abundant inert gas present in air.
(b) Oxides of sulphur and nitrogen combine with rain water to form …………… and …………… which cause …………… .
(c) …………… and …………… are the most common air pollutants.
(d) …………… discovered the oxygen gas.
(e) Oxygen occupies about …………… of air by volume.
Related Questions
(a) Give four uses of oxygen.
(b) How is oxygen naturally renewed in air?
State two differences between: Rusting and Burning.
Match the following:
Column A Column B (a) Global warming (i) Hydrated ferric oxide (b) Acid rain (ii) Manganese dioxide (c) Rust (iii) Carbon dioxide (d) Catalyst (iv) Methane (e) Photosynthesis (v) Nitrogen dioxide A fuel that releases the least amount of pollutants in the air when used:
- Sulphur dioxide
- Chlorofluorocarbon
- Smoke
- CNG