1. Manometer is used for the determination of

2. The electro planting prevents

3. The air is  a

4. Steel is the alloy of

5. When a covalent bound is formed  by a single electron pair termed as a

6. Corrosion of metals is a .................reaction

7. In a group the elements have almost same

8. The Atom is a Greek word

9. Neil Bhor mainly concentrated upon

10. Chemistry is the branch of science that deals with

11. Chemical reactions involve migration of

12. The KCI has the type of bonding

13. The sum of masses of all atoms in a molecule is called

14. The most electronegative element in periodic table is

15. The different forms of element are called

16. The matter exists in

17. When a covalent bound is formed  by two electron pair termed as a

18. The Atoms can exist freely in nature

19. ..............is homogenous mixture of two or more substances

20. Oxidation is the process of adding oxygen and removing