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Chemistry - p Block Elements (Group 13 & 14)

Practise 9 NEST (NISER) previous year questions on p Block Elements (Group 13 & 14), compiled from papers spanning 2011 to 2023. Each question is pulled directly from the actual exam paper it appeared in, so you're practising in the exact style and difficulty NEST (NISER) tests.

p Block Elements (Group 13 & 14) has been asked in 8 of the 16 years of NEST (NISER) papers analysed (2011–2026), with 9 questions in all. 0% of them were easy, 78% moderate and 22% tough. Most of its questions came from 2023, with 2 questions that year. In the last three years (2024–2026) it had 0 questions across 4 papers, about 0 per paper.

The chapter's 3 topics are not weighted equally: Boron and Its Compounds (6 questions, 67%), Silicon and Its Compounds (2 questions, 22%), and Tin and Lead Containing Compounds (1 question, 11%) have been asked the most. Boron and Its Compounds has also led over the last five years, with 2 questions. Boron and Its Compounds has produced the most tough questions (2).

  1. 1Boron on reaction with fluorine forms , which on reaction with NaH at a high temperature produces along with a sodium salt. on reaction with2023 (Session 1)Boron and Its Compounds
  2. 2The reaction of methyl chloride with silicon at 573 K in the presence of copper as a catalyst produces substitued chlorosilanes. Hydrolysis 2023 (Session 2)Silicon and Its Compounds
  3. 3The oxidation of sodium borohydride with iodine forms a colourless toxic gas which catches fire spontaneously on exposure to air. undergoes 2022 (Session 2)Boron and Its Compounds
  4. 4Oxidation of with iodine results in evolution of a colorless gas, X , along with formation of NaI and hydrogen gas. Three moles of X react w2018Boron and Its Compounds
  5. 5Silica is a network solid with bonds. In many aluminosilicates, a few Si atoms in the silica structure are replaced by Al atoms. Zeolites, c2017Silicon and Its Compounds
  6. 6Boron and nitrogen form bonds analogous to carbon-carbon bonds. For example, compound ammonia borane, , contains bond analogous to the bond 2015Boron and Its Compounds
  7. 7is a mixed oxide of PbO and and reacts with hydrochloric and nitric acid in different ways. Select the correct statement with respect to thi2013Tin and Lead Containing Compounds
  8. 8Boron is a fairly rare element. However, it has many important applications. It is a nonmetal and has a very high melting point of . It is e2012Boron and Its Compounds
  9. 9Lewis acidity of boron halides follow the order ( meaning approximately equal to)2011Boron and Its Compounds

Frequently Asked Questions

1.How many questions are available for p Block Elements (Group 13 & 14)?

This chapter includes 9 questions compiled from NEST (NISER) papers spanning 2011 to 2023.

2.Are these questions only from NEST (NISER), or from other exams too?

These are NEST (NISER) questions specifically for the p Block Elements (Group 13 & 14) 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 13 & 14) an important chapter for NEST (NISER) Chemistry?

p Block Elements (Group 13 & 14) has appeared in 8 of the 16 years of NEST (NISER) papers covered here, with 9 questions across 9 papers - about one per paper it appears in.

4.What is the difficulty level of p Block Elements (Group 13 & 14) questions in NEST (NISER)?

Of the 9 questions analysed for this chapter, 0% are easy, 78% moderate and 22% tough. 2023 had the most, with 2 questions.

5.Which topics in p Block Elements (Group 13 & 14) should I focus on?

These topics have carried the most weightage in p Block Elements (Group 13 & 14):

  • Boron and Its Compounds - 6 questions (67%)
  • Silicon and Its Compounds - 2 questions (22%)
  • Tin and Lead Containing Compounds - 1 question (11%)
  • Boron and Its Compounds has produced the most tough questions (2).
6.Is p Block Elements (Group 13 & 14)'s weightage in NEST (NISER) going up or down?

Across all 9 papers analysed, p Block Elements (Group 13 & 14) has averaged about 1.0 questions per paper. In the last three years (2024–2026), that average has fallen, at about 0.0 questions per paper. Use the year-wise numbers on this page for the exact trend before you decide how much time to give it.