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

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

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

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

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

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

7. How Many types of mixture

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

9. Olfactory nerves links....... and...........

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

11. A solution consisting of two substances is called

12. ................. Cell has only one large vacule

13. Which gass is used in photosynthesis?

14. What is receptor

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

16. Which factor affects the soulbality of substances

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

18. Air contain.................. Nitrogen

19. The protective layer of leaf is called

20. The number of naturally occurring elements is

21. Ability to do work is called

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

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

24. Which substance is called universal solvent

25. The main components of environment are

26. Gear system is an advanced shape of

27. Matter consisting of one kind of atoms is called

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

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

30. Air contains 0.03%...........