1. Food becomes fine and soft by addition of..............

2. The distance covered by a wave in one second is called

3. Mass number is denoted by..........

4. The organ which controls the entrance of food and air in the relevant tubes is called.................

5. Convection occurs only in.

6. The ray of light which strikes the surface of other medium for its entry is called

7. The number of protons present in the nucleus of one atom of any element is called its

8. The largest artery is named as

9. The shrillness graveness of a sound is called.

10. The living place of any organism is called

11. Bile is released by

12. ................ Pushes the swallowed food intake into stomach

13. Molecules which form polymers are called.........

14. The distance between two adjacent crests or troughs is called.........

15. What is present in gastric juice?

16. How many types of aquatic habitats

17. How many important modes are for transmission of heat?

18. The formula to find maximum number of electrons in a given shell is

19. The formation of ghee from vegetable oil is an example of.............

20. Loss of water from surface of leaves of plants is called

21. Our sun is.............. sized star

22. Rate of flow of charge is called

23. Unit of electric current is.............

24. ............... are reproductive organs of plants.

25. Voltmeter is used for measurement of............

26. The whorl of sepals is called..........

27. The transfer of heat from a hot body to cold body without heating is called

28. The increase in blood pressure is due to narrowing of..............

29. According to ............. Law Resistance is calculated by dividing voltage by current

30. A material which emits heat