1. Ability to do work is called

2. How Many types of mixture

3. ....................... Is a friendly relationship between two organisms

4. The protective layer of leaf is called

5. The main components of environment are

6. Which factor affects the soulbality of substances

7. A solution consisting of two substances is called

8. Which of the following is not detected by skin?

9. America launched its first space station skylab into space in

10. Olfactory nerves links....... and...........

11. Matter consisting of one kind of atoms is called

12. The biotic components of the environment Include..............

13. Which substance is called universal solvent

14. The energy in an object due its motion is called

15. The speed of sound is........... Meter per second in iron

16. The animals which kill and hunt other animals for food called

17. The energy in an object due its pissition is called

18. Air contains 0.03%...........

19. Gear system is an advanced shape of

20. Which gass is used in photosynthesis?

21. The particles are settled down at the bottom of the container.

22. ................. Cell has only one large vacule

23. The structural and functional unit of life is called ....................

24. The number of naturally occurring elements is

25. A spherical mirror whose inner surface is reflecting is called

26. .................. is used in electric bulbs and flourescent lamps

27. What is receptor

28. The part of the solution which is less in quantity called

29. Meteoroid which burns after entering earth's atmosphere is called

30. Air contain.................. Nitrogen