Question
The particle not present in an ordinary hydrogen atom is:
- Proton.
- Neutron.
- Nucleus.
- Electron.
Explanation:
A hydrogen atom 11HH11 has 1 proton and 1 electron, but it does not have any neutron.
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The value of acceleration due to gravity:
| Elperiment number | Mass of H2 reacted | Mass of o2 reacted | Mass of H2Oproduced |
| 1 | 2g | 16g | 18g |
| 2 | 4g | 32g | 36g |
| 3 | - | - | 9g |
Cnidaria is characterised by: