1. The rate of flow of charge is called

2. The lightest part of atom is

3. Blood is carried from lungs to heart by

4. What is the name of our Galaxy

5. Which circuit is used in domestic wiring

6. In which waves particles of medium move perpendicularly

7. Human heart has ...............chambers

8. The reverse process of peristalsis is called

9. Water is essential for

10. The largest artery is

11. which of the following is not used in human respiratory system

12. flowers are .................part of plant

13. What is the mode of  transferring of heat for energy of sun reaching  us

14. Where are pollen grains located in

15. What is the unit of frequency

16. There are ...............major habitats.

17. Sound can not pass through

18. Bile is released by

19. By addition of what food becomes soft and fine

20. Food for algae is