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NEET Solid State Questions : NEET Previous Year Questions

8. The number of carbon atoms per unit cell of diamond unit cell is (NEET 2013)

(a) 6                                 (b) 1

(c) 4                                 (d) 8

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9. In a face-centred cubic lattice, a unit cell is shared equally by how many unit cells?  (2005)

(a) 2                                 (b) 4

(c) 6                                 (d) 8

13. A compound is formed by cation C and anion A. The anions form hexagonal close packed (hcp) lattice and the cations occupy 75% of octahedral voids. The formula of the compound is                                                    (NEET 2019)

(a) C4A3                         (b) C2A3

(c) C3A2                          (d) C3A4

14. In calcium fluoride, having the fluorite structure, the coordination numbers for calcium ion (Ca2+) and fluoride ion (F) are                       (NEET-II 2016)

(a) 4 and 2                 (b) 6 and 6

(c) 8 and 4                (d) 4 and 8

15. The ionic radii of A+ and B ions are 0.98 × 10–10 m and 1.81 × 10–10 m. The coordination number of each ion in AB is                       (NEET-I 2016)

(a) 8                     (b) 2

(c) 6                     (d) 4

16. The number of octahedral void(s) per atom present in a cubic close-packed structure is  (2012)

(a) 1                                 (b) 3

(c) 2                                 (d) 4 

17. Structure of a mixed oxide is cubic close packed  (ccp). The cubic unit cell of mixed oxide is composed  of oxide ions. One fourth of the tetrahedral voids are occupied by divalent metal A and the octahedral             (Mains 2012)

voids are occupied by a monovalent metal B. The formula of the oxide is

(a) ABO2                               (b) A2BO2

(c) A2B3O4                       (d) AB2O2

18. A solid compound XY has NaCl structure. If the radius of the cation is 100 pm, the radius of the anion (Y) will be                                          (Mains 2011)

(a)  275.1 pm           (b) 322.5 pm

(c) 241.5 pm           (d) 165.7 pm

25. An element has a body centered cubic (bcc) structure with a cell edge of 288 pm. The atomic
radius is                                                       (NEET 2020)





26. The vacant space in bcc lattice unit cell is                    (2015, 2008)

(a) 48%                    (b) 23%

(c) 32%                   (d) 26%

27. If a is the length of the side of a cube, the distance between the body-centred atom and one corner atom in the cube will be                            (2014)

(a) 2/√3 a                        (b) 4/√3 a

(c) √3/4 a                         (d) √3/2 a

28. A metal crystallizes with a face-cent red cubic lattice. The edge of the unit cell is 408 pm. The diameter of the metal atom is                                               (2012)

(a) 288 pm              (b) 408 pm

(c) 144 pm             (d) 204 pm

29. AB crystallizes in a body-cent red cubic lattice with edge length ‘a’ equal to 387 pm. The distance between two oppositely charged ions in the lattice is                                 (2010)

(a) 335 pm                          (b) 250 pm

(c) 200 pm                         (d) 300 pm

30. Lithium metal crystallizes in a body-cent red cubic crystal. If the length of the side of the unit cell of lithium is 351 pm, the atomic radius of lithium will be                                  (2009)

(a) 151.8 pm                    (b) 75.5 pm

(c) 300.5 pm                  (d) 240.8 pm

31. Copper crystallizes in a face-cent red cubic lattice with a unit cell length of 361 pm. What is the radius of copper atom in pm?                                     (2009)

(a) 157                      (b) 181

(c) 108                      (d) 128