Question

Encircle the odd one out. Give reasons for your answer.
1. electric bell, telephone, bullet train, electric cell, electric motor
2. dry cell, button cell, solar cell, plant cell
3 plastic, rubber, silver, wood, bakelite
4. copper, aluminum, glass, lead-tin alloy, german silver

Answer 1

Answer:

1 telephone

2 button cell

3 rubber

4 copper