The p-Block Elements MCQs Mock Test of Class 12th Chemistry

Welcome to your The p-Block Elements MCQs Mock Test of Class 12th Chemistry

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Question 1. The hybridisation of sulphur in sulphur hexafluoride is

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Question 2. On heating KCIO, we get

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Question 3. Which of the following is not correctly matched?

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Question 4. 18 H2S is more acidic than H2O because

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Question 5. Among the 15th group elements, as we move from nitrogen to bismuth, the pentavalency becomes less pronounced and trivalency becomes more pronounced due to

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Question 6. Which of the following statements is not correct for nitrogen?

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Question 7. Collectively the elements of group 15 are called –

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Question 8. Ionic radii (in Ã…) of As3+, Sb3+ and Bi3+ follow the order

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Question 9. Which one of the following elements is most metallic ?

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Question 10. Which of the follow group 15 element forms metallic bonds in elemental state ?

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Question 11. The three important oxidation states of phosphorus are

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Question 12. Which of the following statement is incorrect for group 15 elements ?

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Question 13. Nitrogen is relatively inactive element because

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Question 14. Which of the following has the highest pπ – pπ bonding tendency ?

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Question 15. Pick out the wrong statement.

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Question 16. Nitrogen forms N2, but phosphorus is converted into P4 from P, the reason is

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Question 17. What causes nitrogen to be chemically inert ?

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Question 18. Pentavalence in phosphorus is more stable when compared to that of nitrogen even though they belong to same group. This is due to

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Question 19. Which one has the lowest boiling point ?

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Question 20. Boron shows diagonal relation with

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Question 21. Catenation property is maximum in

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Question 22. Which one of the following is an electrophilic reagent?

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Question23. Element found from sea water is

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Question 24. The shape of XeF4 is

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Question 25. Which one of the following is the strongest lewis acid?

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Question 26. Which one of the following does not form hydrogen bonding?

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Question 27. Main source of helium is

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Question 28. Which one of the following dement is liquid at normal temperature?

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Question 29. Which one of the following is least basic?

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Question 30. H2SO4 is a/an

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Question 31. Modern periodic table is given by

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Question 32. Which one of the following elements is found in free state in nature?

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Question 33. Which of the following is the strongest oxidising agent?

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Question 34. Which of the following has maximum ionisation potential?

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Question 35. The number of P-O-P bonds in cyclic metaphosphoric acid is

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Question 36 Which of the following oxides is an hydride of nitrous acid ?

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Question 37. Which oxide of nitrogen is obtained on heating ammonium nitrate at 250°C ?

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Question 38. Atomicity of phosphorus is

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Question 39. The structure of white phosphorus is

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Question 40. PCl3 on hydrolysis gives

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Question41. Arrange the following in decreasing Lewis acid strength -PF3, PCI3, PBr3, Pl3

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Question 42. How many P-O-P bonds appear in cyclic meta-phosphoric acid?

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Question 43. Which of the following is a tetrabasic acid?

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Question 44. Which of the following is not correctly matched?

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Question 45. Arrange the following hydrides of group 16 elements in order of increasing stability

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Question 46 The boiling points of hydrides of group 16 are in the order

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Question 47 In the manufacture of sulphuric acid by contact process Tyndall box is used to

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Question 48 Fluorine differs from rest of the halogens in some of its properties. This is due to

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Question 49 Boron shows diagonal relation with

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Question 50. Catenation property is maximum in