B.Sc. First year Undergraduate degree course Semester First Inorganic chemistry

Chapter - s block elements

Multiple choice questions

1. Which of the following statement related to S block element is correct?
a) Elements in which last electron enters in d orbital.
b) Elements in which last electron enters in s orbital.
c) Elements in which last electron enters in p orbital.
d) None of above.

2. Among the following find the correct statement related to group 2.
a) The elements having 0 electrons in outer s orbital
b) The elements having 1 electrons in outer s orbital
c) The elements having 2 electrons in outer s orbital
d) The elements having 3 electrons in outer s orbital

3. All elements of group 1 are…
a) Colorful
b) Silvery white
c) Black – white
d) None of above

4. From Lithium to Cesium the density…
a) Increases
b) decreases
c) remains same
d) none of above

5. As we move from Lithium to Francium the ionic size…
a) Decreases
b) Increases
c) Remains constant
d) None of above

6. The ionization energy from Lithium to Francium…
a) Increases
b) Decreases
c) Remains Same
d) None of above

7. The electropositive character increases from…
a) Lithium to Cesium
b) Cesium to Lithium
c) Both a & b
d) None of above

8. Which of the following element have highest electronegativity?
a) Lithium
b) Potassium
c) Rubidium
d) Cesium

9. Find the correct statement related to metals.
a) Metals have tendency to gain electrons
b) Meals have tendency to lose electon
c) Metals have tendency to accept electrons
d) None of above

10. Why electropositive character increases from Lithium to Cesium?
a) Ionization energy increases
b) Ionization energy decreases
c) Ionization energy remains same
d) Other than above

11. Alkali metals show which oxidation state?
a) 0
b) +1
c) +2
d) +3

12. Alkali metal ions are…
a) Paramagnetic
b) Diamagnetic
c) Triamagnetic
d) Tetramagnetic

13. The alkali metals are...
a) Good conductor of electricity
b) Bad conductor of electricity
c) Bad conductor of heat
d) None of above

14. Among the following which has highest reducing character?
a) Sodium
b) Potassium
c) Rubidium
d) Cesium

15. Among the following which has lowest reducing character?
a) Cesium
b) Francium
c) Potassium
d) Lithium

16. Among the following which one has lowest melting point?
a) Lithium
b) Potassium
c) Cesium
d) Sodium

17. The flame of sodium is…
a) Red violet
b) Red Blue
c) Golden yellow
d) Pale violet

18. Lithium shows similar properties with…
a) Magnesium
b) Silicon
c) Aluminium
d) None of above

19. Lithium reacts with Nitrogen to give…
a) LiN
b) Li₂N
c) Li₃N
d) Other than above

20. The nature of oxide…
a) Depends upon the nature of alkali metals
b) Does not depends upon the nature of alkali metals
c) Both A & B
d) None of above

21. What is salvation of the ions?
a) The repulsion of polar solvent molecules to the ion
b) The repulsion of non polar solvent molecules to the ion
c) The attraction of polar solvent molecules to the ion
d) The attraction of non polar solvent molecules to the ion

22. The hydroxides of Alkali metals have general formula…
a) MOH
b) M₂OH
c) MO₂H
d) Other than above

23. Which of the following is the reducing agent?
a) LiOH
b) CsOH
c) LiAlH₄
d) None of above

24. The role of Na+ ion in animal body is…
a) Deactivate enzymes
b) Activate enzymes
c) Both A & B
d) Other than above

25. Among the following which is present in Red Blood Cell?
a) Na⁺
b) K⁺
c) Both A & B
d) None of above

26.Among the following which one have lowest density?
a) Beryllium
b) Magnesium
c) Calcium
d) Radium

27. Why Ionization Potential decreases from Beryllium to Barium?
a) Magnitude of screening effect.
b) Magnitude of kinetic effect
c) Magnitude of dynamic effect
d) None of above

28. Among the following which one has highest electropositive character?
a) Beryllium
b) Barium
c) Calcium
d) Magnesium

29. Among the following which one has lowest Ionization energy?
a) Beryllium
b) Magnesium
c) Calcium
d) Radium

30. The alkaline earth metals show … oxidation state.
a) 0
b) +1
c) +2
d) +3

31. Flame colour of Calcium is…
a) Silver
b) White
c) Crimson
d) Brick red

32. The element Beryllium shows similar properties with…
a) Sodium
b) Magnesium
c) Aluminium
d) Silicon

33.Among the following which is not soluble in water?
a) Magnesium
b) Calcium
c) Strontium
d) Barium

34.The solubility of hydroxides of group 2 increases with…
a) Decrease in atomic number
b) Increase in atomic number
c) Both A & B
d) None of above

35. The structure [Be(Ox)2]2- is known to have…
a) Linear structure
b) Tetrahedral structure
c) Octahedral structure
d) Other than above

36.Among the following which element cannot be combined directly with Hydrogen?
a) Beryllium
b) Calcium
c) Magnesium
d) None of above

37.The alkaline earth metals shows +2 oxidation state. Why?
a) They can easily accept electrons.
b) They can easily lose electron.
c) They are amphoteric in nature.
d) Other than above

38.Why alkaline earth metals are strong reducing agent?
a) They have tendency to release electron in bivalent cation.
b) They have tendency to release electron in trivalent cation.
c) They have tendency to release electron in monovalent cation.
d) None of above

39.The Ionization Potential of Radium increases. Why?
a) Shielding effect of f electrons is very high.
b) Shielding effect of f electron is very less.
c) Shielding effect of d electron is very less
d) None of above

40. Among the following which element shows apple green colour flame?
a) Beryllium
b) Magnesium
c) Calcium
d) Barium

41. The ionic and atomic size increases from Beryllium to Radium. Why?
a) Principle quantum number decreases
b) Principle quantum number increases
c) Principle quantum number remain same
d) None of above

Atomic Structure MCQ

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s-Block elements MCQ

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Structure And Bonding MCQ

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