1. What is receptor

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

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

4. Matter consisting of one kind of atoms is called

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

6. Air contain.................. Nitrogen

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

8. A solution consisting of two substances is called

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

10. Which substance is called universal solvent

11. Ability to do work is called

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

13. Olfactory nerves links....... and...........

14. The number of naturally occurring elements is

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

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

17. The main components of environment are

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

19. Which factor affects the soulbality of substances

20. Which gass is used in photosynthesis?

21. Gear system is an advanced shape of

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

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

24. Air contains 0.03%...........

25. ................. Cell has only one large vacule

26. The protective layer of leaf is called

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

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

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

30. How Many types of mixture