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

Practise 80 AIIMS previous year questions on p Block Elements (Group 15, 16, 17 & 18), compiled from papers spanning 2001 to 2019. Each question is pulled directly from the actual exam paper it appeared in, so you're practising in the exact style and difficulty AIIMS tests.

p Block Elements (Group 15, 16, 17 & 18) has been asked in 19 of the 19 years of AIIMS papers analysed (2001–2019), with 80 questions in all. 65% of them were easy, 25% moderate and 10% tough. Most of its questions came from 2018, with 10 questions that year. In the last three years (2017–2019) it had 19 questions across 5 papers, about 3.8 per paper.

The chapter's 6 topics are not weighted equally: Halogens and Its Compounds (27 questions, 34%), Phosphorus and Its Compounds (18 questions, 23%), and Nitrogen and Its Compounds (13 questions, 16%) have been asked the most. Halogens and Its Compounds has produced the most tough questions (3).

  1. 1Which of the following reacts most slowly with nitric acid?26 May, 2019Halogens and Its Compounds
  2. 2Which will release on reaction with ?26 May, 2019Nitrogen and Its Compounds
  3. 3Strong oxidising agent used in purification of water is26 May, 2019Halogens and Its Compounds
  4. 4In dimer of phosphorus pentoxide, in what order number of and bonds are there?26 May, 2019Phosphorus and Its Compounds
  5. 5Yellow colour of chlorine water fades because26 May, 2019Halogens and Its Compounds
  6. 6How is ammonia generally manufactured in large scale?26 May, 2019Nitrogen and Its Compounds
  7. 7Assertion : Pure is obtained from but not from . Reason : On decomposition, gives gas.26 May, 2019Nitrogen and Its Compounds
  8. 8Which of the following contains atleast one lone pair in all of its halides?27 May, 2018Halogens and Its Compounds
  9. 9Assertion : Pure is formed from . Reason : Thermal decomposition of is used to inflate the air bags used for safety devices in some cars.27 May, 2018Nitrogen and Its Compounds
  10. 10Assertion : Brown ring test is not valid for ion. Reason : Because ion first gets converted into ion.27 May, 2018Nitrogen and Its Compounds
  11. 11Assertion : Red phosphorus on heating changes its colour into black. Reason : Black phosphorus contains units.27 May, 2018Phosphorus and Its Compounds
  12. 12Which of the following statements is incorrect?26 May, 2018Phosphorus and Its Compounds
  13. 13Which of the following is true for ?26 May, 2018Nitrogen and Its Compounds
  14. 14Assertion : and when passed through water, is more reactive. Reason : is most electronegative.26 May, 2018Halogens and Its Compounds
  15. 15Assertion : reacts with to form CO. Reason : is a mild oxidising agent.26 May, 2018Sulphur and Its Compounds
  16. 16Assertion : has higher boiling point than . Reason : is allotrope of oxygen.26 May, 2018Oxygen and Its Compounds
  17. 17Assertion : converts to . Reason : is used to remove unreacted from nuclear reaction.26 May, 2018Halogens and Its Compounds
  18. 18Which of the following oxoacids of phosphorus is a reducing agent and a monobasic acid as well?2017Phosphorus and Its Compounds
  19. 19Assertion : Hydrides of group-16 elements show volatility in the order: Reason : Electronegativity of group-16 elements increases down the g2017Sulphur and Its Compounds
  20. 20Large difference in boiling points is observed in2016Nitrogen and Its Compounds
  21. 21The true statement for the acids of phosphorus, and is2016Phosphorus and Its Compounds
  22. 22Assertion : Charcoal is used in separation of noble gases. Reason: Charcoal has porous structure.2016Noble Gases
  23. 23Chlorine oxidises sodium thiosulphate to form2016Sulphur and Its Compounds
  24. 24Tincture of iodine is2015Halogens and Its Compounds
  25. 25on complete hydrolysis produces2015Noble Gases
  26. 26Rhombic sulphur dissolves best in2014Sulphur and Its Compounds
  27. 27Enrichment of is done by2014Halogens and Its Compounds
  28. 28Which halogen forms only one oxoacid ?2014Halogens and Its Compounds
  29. 29Assertion : Al becomes passive in conc. . Reason: Conc. has no action on aluminium metal.2014Nitrogen and Its Compounds
  30. 30Assertion: Chloroform is stored in dark coloured bottles. Reason: Chronic chloroform exposure may cause damage to liver and kidneys.2014Halogens and Its Compounds
  31. 31Assertion : is dibasic acid. Reason: Two hydrogen atoms are directly attached to the P.2014Phosphorus and Its Compounds
  32. 32Which of the following statement is not true for hydrolysis of ?2013Noble Gases
  33. 33Assertion : Phosphoric acid has no reducing properties. Reason : Phosphoric acid does not contain bonds.2013Phosphorus and Its Compounds
  34. 34How many bond present in ?2012Phosphorus and Its Compounds
  35. 35Which of the following is the correct statement for ?2012Phosphorus and Its Compounds
  36. 36have2012Sulphur and Its Compounds
  37. 37bond length is minimum in2012Nitrogen and Its Compounds
  38. 38Assertion : has strong reducing property but does not. Reason : bond present in .2012Phosphorus and Its Compounds
  39. 39Assertion : Fluorine is a stronger oxidizing agent than iodine. Reason : Fluorine has greater electronegativity than iodine.2012Halogens and Its Compounds
  40. 40Assertion : gas bleaches the articles permanently. Reason : is a strong reducing agent.2012Halogens and Its Compounds
  41. 41Iodine oxidises sodium borohydride to give2011Halogens and Its Compounds
  42. 42on hydrolysis gives fumes of2011Phosphorus and Its Compounds
  43. 43First compound of Xe synthesized was2011Noble Gases
  44. 44Best method to form aromatic iodide is2011Halogens and Its Compounds
  45. 45Assertion : Helium is used in diving apparatus. Reason : Solubility of helium is less in blood.2011Noble Gases
  46. 46Bromine is added to cold dilute aqueous solution of . The mixture is boiled. Which of the following statements is not true?2010Halogens and Its Compounds
  47. 47The phosphate of a metal has the formula . The formula of its chloride would be2010Phosphorus and Its Compounds
  48. 48Assertion : is covalent in gaseous and liquid states but ionic in solid state. Reason : in solid state consists of tetrahedral cation and oc2010Phosphorus and Its Compounds
  49. 49Assertion : Helium has the highest value of ionisation energy among all the elements known. Reason : Helium has the highest value of electro2010Noble Gases
  50. 50Tincture of iodine is2009Halogens and Its Compounds

Frequently Asked Questions

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

This chapter includes 80 questions compiled from AIIMS papers spanning 2001 to 2019.

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

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

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

p Block Elements (Group 15, 16, 17 & 18) has appeared in 19 of the 19 years of AIIMS papers covered here, with 80 questions across 20 papers - about 4 per paper it appears in.

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

Of the 80 questions analysed for this chapter, 65% are easy, 25% moderate and 10% tough. 2018 had the most, with 10 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):

  • Halogens and Its Compounds - 27 questions (34%)
  • Phosphorus and Its Compounds - 18 questions (23%)
  • Nitrogen and Its Compounds - 13 questions (16%)
  • Halogens and Its Compounds has produced the most tough questions (3).
6.Is p Block Elements (Group 15, 16, 17 & 18)'s weightage in AIIMS going up or down?

Across all 20 papers analysed, p Block Elements (Group 15, 16, 17 & 18) has averaged about 4.0 questions per paper. In the last three years (2017–2019), that average has stayed about the same, at about 3.8 questions per paper. Use the year-wise numbers on this page for the exact trend before you decide how much time to give it.