1. Bile is released by

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

3. Food for algae is

4. flowers are .................part of plant

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

6. There are ...............major habitats.

7. Sound can not pass through

8. In which waves particles of medium move perpendicularly

9. The lightest part of atom is

10. Where are pollen grains located in

11. The rate of flow of charge is called

12. What is the unit of frequency

13. The largest artery is

14. Water is essential for

15. The reverse process of peristalsis is called

16. Which circuit is used in domestic wiring

17. Blood is carried from lungs to heart by

18. Human heart has ...............chambers

19. What is the name of our Galaxy

20. By addition of what food becomes soft and fine