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Chemistry - Solid State

Practise 43 AIIMS previous year questions on Solid State, 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.

Solid State has been asked in 19 of the 19 years of AIIMS papers analysed (2001–2019), with 43 questions in all. 72% of them were easy, 28% moderate and 0% tough. Most of its questions came from 2019, with 6 questions that year. In the last three years (2017–2019) it had 13 questions across 5 papers, about 2.6 per paper.

The chapter's 7 topics are not weighted equally: Cubic system (16 questions, 37%), Non-stoichiometric defects (7 questions, 16%), and Stoichiometric defects (6 questions, 14%) have been asked the most.

  1. 1In , distance between the nearest tetrahedral voids is26 May, 2019Cubic system
  2. 2Assertion : Ferromagnetic compound is more attracted towards magnetic field. Reason : Because all electrons are aligned in same direction.26 May, 2019Electrical and Magnetic properties
  3. 3The number of tetrahedral voids present in 0.5 mole of crystal structure are25 May, 2019Cubic system
  4. 4An element germanium crystallises in type crystal structure with edge of unit cell equal to and the density of the element equal to . The nu25 May, 2019Cubic system
  5. 5Formula of metal oxide with metal deficiency defect in its crystal is . The crystal contains and ions. The fraction of metal existing as ion25 May, 2019Non-stoichiometric defects
  6. 6Assertion: becomes yellow when it is heated. Reason : Metal excess defect arises due to excess of ions which move to interstitial sites and 25 May, 2019Non-stoichiometric defects
  7. 7F-centre is27 May, 2018Non-stoichiometric defects
  8. 8Assertion : Metal deficiency defect can be seen in . Reason : Li compound ( has pink colour due to F-center.27 May, 2018Non-stoichiometric defects
  9. 9What colour is observed when is heated?26 May, 2018Non-stoichiometric defects
  10. 10In of of tetrahedral voids are occupied by . What is the formula of the compound?26 May, 2018Cubic system
  11. 11Assertion : Due to Frenkel defect, there is no effect on the density of the crystalline solid. Reason : In Frenkel defect, no cation or anio26 May, 2018Stoichiometric defects
  12. 12is white when cold and yellow when heated. It is due to the development of2017Non-stoichiometric defects
  13. 13Assertion: The number of tetrahedral voids is double the number of octahedral voids. Reason: The size of the tetrahedral voids is half of th2017Cubic system
  14. 14If an atom crystallises in lattice with then the edge length will be2016Cubic system
  15. 15Which of the following is an amorphous solid?2015Properties and Types of Solids
  16. 16The and are located in crystal respectively at face-centred cubic lattice points and in2015Cubic system
  17. 17The yellow colour in crystals is due to2015Crystal Structure of Solids
  18. 18Assertion : Conductivity of silicon increases by doping it with group-15 elements. Reason : Doping means introduction of small amount of imp2015Electrical and Magnetic properties
  19. 19forms lattice and are occupying of tetrahedral voids, then the formula of compound is2014Cubic system
  20. 20Assertion: Monoclinic sulphur is an example of monoclinic crystal system. Reason: For a monoclinic system, and .2014Crystal Structure of Solids
  21. 21In a solid, atom occupies ccp lattice and of tetrahedral voids are occupied by atom . Find the formula of solid formed by and .2013Cubic system
  22. 22Assertion: The presence of a large number of Schottky defects in lowers its density. Reason : In , there are approximately Schottky pairs pe2013Stoichiometric defects
  23. 23In structure contribution of corner and central atom is2012Cubic system
  24. 24has arrangement. Its unit cell edge length is . Its inter-ionic distance is2012Cubic system
  25. 25Schottky defect is2011Stoichiometric defects
  26. 26Assertion : and has same packing efficiency. Reason : Both have same number of atoms per unit cell and same arrangement.2011Cubic system
  27. 27In tetrag onal crystal system, which of following is not true?2010Crystal Structure of Solids
  28. 28Assertion : Due to Frenkel defect, density of the crystalline solid decreases. Reason : In Frenkel defect, cation or anion leaves the crysta2010Stoichiometric defects
  29. 29Schottky defect in crystals is observed when2009Stoichiometric defects
  30. 30The flame colours of metal ions are due to2008Non-stoichiometric defects
  31. 31A unit cell of sodium chloride has four formula units. The edge length of the unit cell is \(0.564 {~nm}\). What is the density of sodium ch2008Cubic system
  32. 32The coordination number in \(h c p\) is2007Cubic system
  33. 33The and are located in crystal, respectively at face centred cubic lattice points and in2006Crystal Structure of Solids
  34. 34The energy gaps between valence band and conduction band for diamond, silicon and germanium are in the order2006Electrical and Magnetic properties
  35. 35Assertion : Graphite is an example of tetragonal crystal system. Reason : For a tetragonal system, , .2006Crystal Structure of Solids
  36. 36If is the number of atoms in the unit cell that represents the closest packing sequence ... , the number of tetrahedral voids in the unit ce2005Cubic system
  37. 37The crystal system of a compound with unit cell dimensions and and and is2004Properties and Types of Solids
  38. 38What is the co-ordination number of sodium in ?2003Crystal Structure of Solids
  39. 39Schottky defect defines imperfection in the lattice structure of a2002Stoichiometric defects
  40. 40An type structure is found in2002Ionic structure
  41. 41An element (atomic mass ) having BCC structure has unit cell edge . The density of element is (No. of atom in BCC ).2002Cubic system
  42. 42A solid has type structure. The radius of is . What is the radius of ?2001Ionic structure
  43. 43Crystalline solids have2001Properties and Types of Solids

Frequently Asked Questions

1.How many questions are available for Solid State?

This chapter includes 43 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 Solid State chapter. Questions from other exams like NEET or JIPMER are organised separately under their respective exam sections.

3.Is Solid State an important chapter for AIIMS Chemistry?

Solid State has appeared in 19 of the 19 years of AIIMS papers covered here, with 43 questions across 21 papers - about 2 per paper it appears in.

4.What is the difficulty level of Solid State questions in AIIMS?

Of the 43 questions analysed for this chapter, 72% are easy, 28% moderate and 0% tough. 2019 had the most, with 6 questions.

5.Which topics in Solid State should I focus on?

These topics have carried the most weightage in Solid State:

  • Cubic system - 16 questions (37%)
  • Non-stoichiometric defects - 7 questions (16%)
  • Stoichiometric defects - 6 questions (14%)
6.Is Solid State's weightage in AIIMS going up or down?

Across all 21 papers analysed, Solid State has averaged about 2.0 questions per paper. In the last three years (2017–2019), that average has risen, at about 2.6 questions per paper. Use the year-wise numbers on this page for the exact trend before you decide how much time to give it.