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

2. The number of naturally occurring elements is

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

4. Ability to do work is called

5. Which substance is called universal solvent

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

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

8. What is receptor

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

10. ................. Cell has only one large vacule

11. The main components of environment are

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

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

14. Which factor affects the soulbality of substances

15. Which gass is used in photosynthesis?

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

17. Gear system is an advanced shape of

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

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

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

21. Air contain.................. Nitrogen

22. Air contains 0.03%...........

23. A solution consisting of two substances is called

24. Matter consisting of one kind of atoms is called

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

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

27. Olfactory nerves links....... and...........

28. The protective layer of leaf is called

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

30. How Many types of mixture