Elements Of Groups 16, 17 and 18 MHT-CET PYQ's

 

MHT-CET 2005

1. Number of unpaired electrons sulphur is

• (A) 2 
• (B) 6
• (C) 8
• (D) 1 

MHT-CET 2006

2. Apatite is an ore of 

• (A) fluorine 
• (B) chlorine
• (C) bromine
• (D) iodine

MHT-CET 2011

3. Which of the following property does not correspond to the order HI < HBr < HCl < HF?

• (A) Thermal stability
• (B) Reducing power
• (C) Ionic character
• (D) Dipole moment
  

MHT-CET 2012 

 4. Which of the following compound of Xenon does not exists? 

• (A) XeF6 
• (B) XeF4 
• (C) XeF5 
• (D) XeF2

MHT-CET 2013 

5. Which is the strongest acid in the following? 

• (A) H2SO4 
• (B) HC1O3 
• (C) HC1O4
• (D) H2SO3

MHT-CET 2015

 6. Electronic configuration of only one P block element is exceptional. One molecule of the element consists of how many atoms of it? 

• (A) One 
• (B) Two 
• (C) Three
• (D) Four

7. Which is the most abundant element on earth? 

• (A) Hydrogen 
• (B) Nitrogen 
• (C) Oxygen
• (D) Silicon

8. Identify a metalloid from the following list of elements. 

• (A) Carbon 
• (B) Neon
• (C) Sodium 
• (D) Tellurium

9. Which halogen forms an oxyacid that contains the halogen atom in tripositive oxidation state?

• (A)Fluorine 
• (B) Chlorine 
• (C) Bromine 
• (D) Iodine

MHT-CET 2016 

10. The element that does NOT form acidic oxide is 

• (A) Carbon 
• (B) Phosphorus 
• (C) Chlorine 
• (D) Barium

11. Which halide of magnesium has highest ionic character? 

• (A) Chloride
• (B) Bromide 
• (C) Iodide 
• (D) Fluoride

12. The most abundant noble gas in atmosphere is 

• (A) Neon 
• (B) Argon
• (C) Xenon
• (D) Krypton

13. What is the highest oxidation state exhibited by group 17 elements?

• (A) + 1
• (B) + 3
• (C) + 5
• (D) + 7

MHT-CET 2017 

 

14. Which among the following compounds does not act as a reucing agent?

• (A) H2O 
• (B) H2S
• (C) H2Se
• (D) H2Te

15. Which halogen has the highest value of negative electron gain enthalpy?

• (A) Fluorine 
• (B) Chlorine
• (C) Bromine
• (D) Iodine

16. Which element among the following does NOT from diatomic molecules?

• (A) Argon
• (B) Oxygen
• (C) Nitrogen 
• (D) Bromine

MHT-CET 2018 

 

17. Identify the element that forms amphoteric oxide. 

• (A) Carbon
• (B) Zinc
• (C) Calcium
• (D) Sulphur

18. The oxidation number of sulphur in S8 molecule is 

• (A) 0
• (B) 2
• (C) 6
• (D) 3
  

19. The oxidation state of sulphur in H2S2O7 is 

• (A) +4
• (B) +6 
• (C) +5 
• (D) +7

20. Which among the following does not form polyhalide ion? 

• (A) Bromine
• (B) Iodine 
• (C) Fluorine
• (D) Chlorine

21. Which mixture is used for respiration by deep sea divers? 

• (A) Kr + O2 
• (B) He + O2
• (C) Ar + O2
• (D) Ne + O2
  

22. Arrange the following in the increasing order of their acidic strength. 

• (A) HBr < HI < HF < HCl
• (B) HCl < HBr < HI < HF 
• (C) HI < HBr < HCl < HF 
• (D) HF < HCl < HBr < HI

23. Which substance is used to bleach wood pulp into white paper? 

• (A) H2O2 
• (B) NaOI
• (C) Chlorine gas 
• (D) H2SO4/KMnO4

24. Which of the following oxides is amphoteric in nature?

• (A) CaO 
• (B) Na2O 
• (C) Al2O3 
• (D) SO3

25. The shape of BrF5 molecule is 

• (A) Trigonal bipyramidal 
• (B) Square planar 
• (C) Trigonal pyramidal 
• (D) Square pyramidal 

26. Which of the following oxyacid of sulphur contains S = S linkage? 

• (A) H2S2O5 
• (B) H2S2O2 
• (C) H2SO3 
• (D) H2S2O4

MHT-CET 2020 

 

27. In resonance hybrid of ozone molecule, O-O bond length is 

• (A) 148 pm 
• (B) 134.5 pm 
• (C) 121 pm 
• (D) 128 pm 

28. Which of the following oxyacid of sulphur contain both S=S and S=O bonds? 

• (A) H2S2O3
• (B) H2S2O4 
• (C) H2S2O2 
• (D) H2S2O5 

29. How many lone pair of electrons are present on chlorine atom in chlorus acid? 

• (A) 3 
• (B) 4  
• (C) 2 
• (D) 1

30. Which of the following oxyacid of chlorine has highest thermal stability? 

• (A) HC1O2
• (B) HC1O
• (C) HClO4 
• (D) HClO3 

31. Chlorine is manufacture by 

• (A) Haber process 
• (B) Ostwald's process 
• (C) Deacon process
• (D) Contact process

32. Which among the following halogen does not form polyhalide ion?

• (A) Cl  
• (B) F 
• (C) Br
• (D) I

33. Which among the following is powerful bleaching and oxidizing agent?

• (A) PH3
• (B) SO2 
• (C) Cl2 
• (D) Cl2O7

34. Which among the following oxides is amphoteric in nature? 

• (A) SnO 
• (B) CaO
• (C) B2O3
• (D) Cl2O7

35. Which among the following is NOT a mineral of chlorine?

• (A) Carnallite
• (B) Sylvine
• (C) Horn silver
• (D) Cryolite

36. Which of the following oxyacids of chlorine does not contain lone pair of electron on chlorine atom?

• (A) HOClO2
• (B) HOClO3
  
• (C) HOClO
• (D) HOCl

37. How many lone pair of electrons are present on chlorine atom in hypochlorous acid?

• (A) 4 
• (B) 2 
• (C) 3 
• (D) 1 

38. Identify correct decreasing order of oxidizing power. 

• (A) HClO > HClO2 > HClO3
• (B) HClO2 > HClO > HCO3 
• (C) HCIO > HClO3 > HClO2
• (D) HClO2 > HClO3 > HClO

39. What is the oxidation state of chlorine atom in chloric acid? 

• (A) +1 
• (B) +5 
• (C) -1 
• (D) +3
  

40. Which among the following pairs of halogen forms the interhalogen compound of the type XX`7?

• (A) Br and F 
• (B) I and Cl 
• (C) Cl and F 
• (D) I and F 

41. Which among the following is used as an oxidizing agent to bleach wood pulp into white paper 

• (A) Mn(OH)2 
• (B) H2O2 
• (C) NaOCl 
• (D) Cl2 

42. What is the oxidation state of chlorine atom in hypochlorous acid? 

• (A) -1 
• (B) +2 
• (C) +1 
• (D) +3 

43. What is the oxidation state of sulphur in oil of vitriol?

• (A) +3
• (B) +2
• (C) +6
• (D) -3 

44. Identify the inert gas used for filling balloons? 

• (A) Krypton 
• (B) Helium 
• (C) Argon 
• (D) Neon

45. Which of the following oxyacid of sulphur contain S-O-S linkage? 

• (A) H2S2O2 
• (B) H2S2O5 
• (C) H2S2O3 
• (D) H2S2O4

46. Which of the following noble gas molecules is more polarized by water? 

• (A) Helium 
• (B) Neon 
• (C) Argon
• (D) Krypton

47. Which among the following yellow gas? 

• (A) F2 
• (B) Br2 
• (C) Cl2 
• (D) I2

48. How many lone pair of electrons are present on each oxygen atom in any oxy acids of chlorine

• (A) 3
• (B) 1
• (C) 0
• (D) 2

49. The oxidation state of chlorine in its oxyacid depends upon

• (A) number of lone pair electrons on oxygen atom 
• (B) oxidation state of oxygen in molecule
• (C) number of chlorine atoms per molecule 
• (D) number of oxygen atoms per molecule

50. What is the colour of gaseous ozone?

• (A) Yellowish white 
• (B) Blue black
• (C) Blue
• (C)--
  

51. The  O--S--O bond angle and hybridization of Sulphur in SO2 molecule is respectively

• (A) 119°, sp² 
• (B) 134°, sp2 
• (C) 105°, sp³d
• (D) 117°, sp³

52. Highest negative electron gain enthalpy in halogens is possessed by 

• (A) Cl
• (B) F
• (C) I 
• (D) Br

53. When sulphur dioxide combines with chlorine in the presence of charcoal catalyst, the product formed is

• (A) S2Cl2
• (B) SOCl2 
• (C) Colloidal Sulphur
• (D) SO2Cl2

54. Which of the following noble gases is least soluble in water?

• (A) Ne
• (B) Ar
• (C) Kr
• (D) He

55. What is the ratio of volumes of gases involved in the preparation of sulphur trioxide from sulphur dioxide and dioxygen respectively under similar conditions of temperature and pressure?

• (A) 1 : 3 : 1 
• (B) 2 : 1 : 2 
• (C) 1 : 1 : 1 
• (D) 1 : 2 : 1 

56. What type of hybridization is observed in interhalogen compounds of the type XX'3? 

• (A) sp² 
• (B) sp³
• (C) sp³d 
• (D) sp³d² 

57. Which among the following gases is used to produce and sustain powerful super conducting magnets for NMR and MRI systems? 

• (A) Kr
• (B) Ar 
• (C) He 
• (D) Ne 

58. Which of the following oxyacid of chlorine is thermally least stable? 

• (A) HClO 
• (B) HClO3 
• (C) HCIO2 
• (D) HClO4

59. The oxidizing power of oxyacids of chlorine depend upon 

• (A) number of oxygen atoms per molecule 
• (B) number of chlorine atoms per molecule 
• (C) oxidation state of oxygen in molecule 
• (D) number of lone pair of electrons on each oxygen atom 

60. Which is the lowest oxidtion state possessed by chlorine in it's oxyacids? 

• (A) + 1 
• (B) + 5 
• (C) + 3 
• (D) --

61. Which among the following catalysts is used in manufacture of sulphuric acid by contact process? 

• (A) Ni 
• (B) Fe with Mo 
• (C) MnO2 
• (D) V2O5

62. The maximum positive oxidation state shown by halogen is 

• (A) +5 
• (B) +1 
• (C) +7 
• (D) +3

63. Which among the following halogens does not form the oxide of type OX2? (X = halogen)

• (A) F 
• (B) Cl 
• (C) Br 
• (D) I

64. What is the highest oxidation state possessed by chlorine in its oxyacids? 

• (A) +5 
• (B) +1 
• (C) +7 
• (D) +3

65. In the laboratory hydrogen chloride is prepared by heating

• (A) bleaching powder and concentrated sulphuric acid. 
• (B) sodium chloride and concentrated sulphuric acid.
• (C) bleaching powder and ammonia solution.
• (D) potassium chlorate and concentrated sulphuric acid.