Question

Find the odd one out
1. A sailing ship , a hydrogen filled balloon , a large stone , swimming duck
2. Buoyant force, weight, mass, apparent weight

3. A lift pump , a barometer, suction pad , sailing boat

4. A freely falling stone , a running train , a flying bird , water stored in a

dam

5. Wood , coal , petrol, sollar cell

6. Electric heater , electric fan, electric motor , electric generator​

Answer 1

Answer:

hydrogen filled balloon

buoyant force

sailing boat

a freely falling stone

sollar cell

electric heater