Question
State two hazards associated with the use of electricity.
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| Column I | Column II |
| (1) Dobereiner | (a) Atomic number |
| (2) New lands | (b) Triads |
| (3) Moseley | (c) Atomic mass |
| (4) Mendeleev | (d) Octaves |
| (e) Sodium |
| Body cavity | Germ Layer | Phylum |
| Absent | _____________ | Porifera |
| Absent | Triploblastic | _____________ |
| Pseudocoelom | _____________ | Aschelminthes |
| Present | _____________ | Arthropoda |