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Chemistry - p Block Elements (Group 15, 16, 17 & 18)

Practise 45 KCET previous year questions on p Block Elements (Group 15, 16, 17 & 18), compiled from papers spanning 2007 to 2024. Each question is pulled directly from the actual exam paper it appeared in, so you're practising in the exact style and difficulty KCET tests.

p Block Elements (Group 15, 16, 17 & 18) has been asked in 17 of the 20 years of KCET papers analysed (2007–2026), with 45 questions in all. 53% of them were easy, 33% moderate and 13% tough. Most of its questions came from 2024, with 5 questions that year. In the last three years (2024–2026) it had 5 questions across 3 papers, about 1.7 per paper.

The chapter's 6 topics are not weighted equally: Nitrogen and Its Compounds (15 questions, 33%), Noble Gases (11 questions, 24%), and Phosphorus and Its Compounds (8 questions, 18%) have been asked the most. Nitrogen and Its Compounds has also led over the last five years, with 5 questions. Phosphorus and Its Compounds has produced the most tough questions (2).

  1. 1Which one of the following nitrate will decompose to give on heating ?2024Nitrogen and Its Compounds
  2. 2Which of the following halides cannot be hydrolysed?2024Halogens and Its Compounds
  3. 3gas is2024Nitrogen and Its Compounds
  4. 4Identify the incorrect statement from the following.2024Nitrogen and Its Compounds
  5. 5The correct decreasing order of boiling point of hydrogen halides is2024Halogens and Its Compounds
  6. 6A pair of amphoteric oxides is2023Oxygen and Its Compounds
  7. 7Which of the following compound does not give dinitrogen on heating?2023Nitrogen and Its Compounds
  8. 8The correct decreasing order of basicity of hydrides of group- 15 elements is2023Phosphorus and Its Compounds
  9. 9Which one of the following oxoacids of phosphorus can reduce to metallic silver?2023Phosphorus and Its Compounds
  10. 10The property of halogens which is not correctly matched is2022Halogens and Its Compounds
  11. 11Which noble gas has least tendency to form compounds?2022Noble Gases
  12. 12on heating liberates a gas. The same gas will be obtained by2022Nitrogen and Its Compounds
  13. 13The strong reducing property of hypophosphorus acid is due to2022Phosphorus and Its Compounds
  14. 14Which of the following property is true for the given sequence? ?2021Nitrogen and Its Compounds
  15. 15The correct order of boiling point in the following compounds is2021Nitrogen and Its Compounds
  16. 16on partial hydrolysis gives a compound , which has square pyramidal geometry ' ' is2021Noble Gases
  17. 17A colourless, neutral, paramagnetic oxide of nitrogen ' ' on oxidation gives reddish brown gas . on cooling gives colourless gas on reaction2021Nitrogen and Its Compounds
  18. 18Phosphorus pentachloride2020Phosphorus and Its Compounds
  19. 19\( 0.1 \) mole of \( X e F_{6} \) is treated with \( 1.8 {~g} \) of water. The product obtained is2019Noble Gases
  20. 20In the reaction of gold with aquaregia, oxidation state of Nitrogen changes from2019Nitrogen and Its Compounds
  21. 21When \( {PbO}_{2} \) reacts with concentrated \( {HNO}_{3} \), the gas evolved is2018Nitrogen and Its Compounds
  22. 22Very pure \( {N}_{2} \) can be obtained by2018Nitrogen and Its Compounds
  23. 23For a reaction \( {1}{2} {~A} 2 {~B} \) rate of disappearance of \( {A} \) is related to rate of appearance of \( {B} \) by the expression2017Halogens and Its Compounds
  24. 24Square planar complex of the type MAXBL (where A, B, X and L are unidentate ligands)shows following set of isomers2017Nitrogen and Its Compounds
  25. 25According to crystal field theory, the \( M \) - Lbond in a complex is2017Noble Gases
  26. 26Which of the following order is true regardingthe acidic nature of phenol?2017Nitrogen and Its Compounds
  27. 27Sulphur sol contains2016Sulphur and Its Compounds
  28. 28The property which is not true about Fluorine is,2016Halogens and Its Compounds
  29. 29Which is true regarding nitrogen ?2016Nitrogen and Its Compounds
  30. 30The shape of \( X e F_{6} \) is,2016Noble Gases
  31. 31The electrolyte having maximum flocculation value for \( A g l / A g^{+} \)sol. is2015Phosphorus and Its Compounds
  32. 32Which of the following compound of Xenon has pyramidal geometry?2015Noble Gases
  33. 33The statement that is NOT correct is2014Phosphorus and Its Compounds
  34. 34Conversion of oxygen into ozone is non-spontaneous at2014Sulphur and Its Compounds
  35. 35\( 0.44 {~g} \) of a monohydric alcohol when added to methylmagnesium iodide in ether liberates at S.T.P., \( 112 {~cm}^{3} \) of methane. W2014Oxygen and Its Compounds
  36. 36The statement that is NOT correct is2014Halogens and Its Compounds
  37. 37Excess of reacts with concentrated giving2013Phosphorus and Its Compounds
  38. 38Which of the following is employed in flash tubes in photograph?2013Noble Gases
  39. 39In Ramsay and Rayleigh's isolation of noble gases from air, the nitrogen of the air is finally converted into2011Nitrogen and Its Compounds
  40. 40Molecules of a noble gas do not possess vibrational energy because a noble gas2010Noble Gases
  41. 41Argon is used2009Noble Gases
  42. 42Excess of reacts with conc giving2008Phosphorus and Its Compounds
  43. 43Helium is used in balloons in place of hydrogen because it is2008Noble Gases
  44. 44When conc. is heated with , the acid is converted into2007Sulphur and Its Compounds
  45. 45The noble gas mixture is cooled in a coconut bulb at . The gases that are not adsorbed are2007Noble Gases

Frequently Asked Questions

1.How many questions are available for p Block Elements (Group 15, 16, 17 & 18)?

This chapter includes 45 questions compiled from KCET papers spanning 2007 to 2024.

2.Are these questions only from KCET, or from other exams too?

These are KCET questions specifically for the p Block Elements (Group 15, 16, 17 & 18) chapter. Questions from other exams like JEE Main or NTA Abhyas (JEE Main) are organised separately under their respective exam sections.

3.Is p Block Elements (Group 15, 16, 17 & 18) an important chapter for KCET Chemistry?

p Block Elements (Group 15, 16, 17 & 18) has appeared in 17 of the 20 years of KCET papers covered here, with 45 questions across 17 papers - about 3 per paper it appears in.

4.What is the difficulty level of p Block Elements (Group 15, 16, 17 & 18) questions in KCET?

Of the 45 questions analysed for this chapter, 53% are easy, 33% moderate and 13% tough. 2024 had the most, with 5 questions.

5.Which topics in p Block Elements (Group 15, 16, 17 & 18) should I focus on?

These topics have carried the most weightage in p Block Elements (Group 15, 16, 17 & 18):

  • Nitrogen and Its Compounds - 15 questions (33%)
  • Noble Gases - 11 questions (24%)
  • Phosphorus and Its Compounds - 8 questions (18%)
  • Phosphorus and Its Compounds has produced the most tough questions (2).
6.Is p Block Elements (Group 15, 16, 17 & 18)'s weightage in KCET going up or down?

Across all 17 papers analysed, p Block Elements (Group 15, 16, 17 & 18) has averaged about 2.6 questions per paper. In the last three years (2024–2026), that average has fallen, at about 1.7 questions per paper. Use the year-wise numbers on this page for the exact trend before you decide how much time to give it.