Unit 1 » The Solid State- MCQs (12th) | Chemistry | Objective Questions- 12th

Multiple Choice

ID- 11699

BSEB, 2020 (A)

1. Which of the following is a crystalline solid?

(A) Diamond
(B) Glass
(C) Rubber
(D) All of these

Sep 03, 2022 at 08:30 PM

Multiple Choice

ID- 11700

BSEB, 2020 (A)

2. Which of the following oxides shows ferro-magnetism?

(A) CrO₂
(B) MnO₂
(C) Fe₃O₃
(D) V₂O₅

Sep 03, 2022 at 08:32 PM

Multiple Choice

ID- 11701

BSEB, 2019 (C)

3. Cystals are:

(A) Four types
(B) Three types
(C) Seven types
(D) All of these

Sep 03, 2022 at 08:33 PM

Multiple Choice

ID- 11702

BSEB, 2017 (C)

4. The number of basic crystal system is:

(A) 4
(B) 6
(C) 7
(D) 8

Sep 03, 2022 at 08:34 PM

Multiple Choice

ID- 11703

BSEB, 2017 (C)

5. In a crystal system AB with of the following crystal system will have parameters, a ≠ b ≠ c and α = β = γ = 90°?

(A) Triclinic
(B) Orthorhombic
(C) Cubic
(D) Monoclinic

Sep 03, 2022 at 08:39 PM

Multiple Choice

ID- 11704

BSEB, 2018 (A)

6. Percentage of free space in bcc. unit cell is:

(A) 32%
(B) 34%
(C) 28%
(D) 30%

Sep 03, 2022 at 08:41 PM

Multiple Choice

ID- 11705

BSEB, 2018 (A)

7. In which of the following pairs of structure as tetrahedral as well as octahedral respectively?

(A) bcc and fcc
(B) hcp and simple cubic
(C) hcp and ccp
(D) bcc and hcp

Sep 03, 2022 at 08:44 PM

Multiple Choice

ID- 11706

BSEB, 2018 (A), 2020 (A)

8. The coordination number of a metal crystallizing in hexagonal close bracket (hcp) structure is:

(A) 12
(B) 8
(C) 4
(D) 6

Sep 03, 2022 at 08:46 PM

Multiple Choice

ID- 11707

BSEB, 2013, 2020 (A), 2021 (A)

9. Which one of the following is non-crystalline or amorphous?

(A) Diamond
(B) Graphite
(C) Glass
(D) Common Salt

Sep 03, 2022 at 08:48 PM

Multiple Choice

ID- 11708

10. How many chloride ions are surrounding sodium ion in sodium chloride crystal?

(A) 4
(B) 8
(C) 6
(D) 12

Sep 03, 2022 at 08:50 PM

Multiple Choice

ID- 11709

11. In NaCI structure:

(A) all octahedral and tetrahedral sites are occupied
(B) only octahedral sites are occupied
(C) only tetrahedral sites are occupied
(D) neither octahedral nor tetrahedral sites are occupied

Sep 03, 2022 at 08:56 PM

Multiple Choice

ID- 11710

12. In zinc blende structure:

(A) zinc ions occupy half of the tetrahedral sites
(B) each Zn²⁺ is surrounded by six sulphide ions
(C) each S^2-- is surrounded by six Zn²⁺ ions
(D) it has fcc structure

Sep 03, 2022 at 09:03 PM

Multiple Choice

ID- 11711

13. A unit cell of BaCI₂ (fluorite structure) is made up of:

(A) four Ba²⁺ ions and four CI^- ions
(B) four Ba²⁺ ions and eight CI^- ions
(C) eight Ba² ions and four CI^- ions
(D) four Ba² ions and six CI^- ions

Sep 03, 2022 at 09:06 PM

Multiple Choice

ID- 11712

14. Alkali haldis do not show Frenkel defect because:

(A) cations and anions have almost equal size
(B) there is a large difference in size of cations and anions
(C) cations and anions have low coordination number
(D) anions cannot be accommodated in voids

Sep 03, 2022 at 09:10 PM

Multiple Choice

ID- 11751

BSEB, 2018 (C)

15. In hcp structure, the packing fractions is:

(A) O.68
(B) 0.74
(C) 0.54
(D) 0.50

Sep 04, 2022 at 07:00 AM

Multiple Choice

ID- 11752

BSEB, 2018 (C)

16. The number of atoms in 100g crystal of an fcc crystal which density d = 10g/cm³ and cell edge as 200 pm is equal to:

(A) 3 x 10²⁵
(B) 5 x 10²⁴
(C) 10 x 10²⁵
(D) 2 x 10²⁵

Sep 04, 2022 at 09:21 AM

Multiple Choice

ID- 11753

17. Edge length of unit cell of chromium metal is 287 pm with bcc arrangement. The atomic radius is of the order:

(A) 287 pm
(B) 574 pm
(C) 124.27 pm
(D) 143.5 pm

Sep 04, 2022 at 09:23 AM

Multiple Choice

ID- 11754

18. The density of a metal crystallises in bcc lattice with units cell edge length 300 pm and molar mass 50g mol^–1 will be:

(A) 10 g cm^–3
(B) 14.2 g cm^–3
(C) 6.15 g cm^–3
(D) 9.32 g cm^–3

Sep 04, 2022 at 09:28 AM

Multiple Choice

ID- 11755

19. The distance between NA⁺ and CI^– ions in NaCI with a density 2.165 g cm^–3 is:

(A) 564 pm
(B) 282 pm
(C) 234 pm
(D) 538 pm

Sep 04, 2022 at 09:30 AM

Multiple Choice

ID- 11756

20. Fe₃O₄ (magnetite)is an example of:

(A) normal spinel structure
(B) inverse spinel structure
(C) fluoride structure
(D) antifluorite structure

Sep 04, 2022 at 09:33 AM

Multiple Choice

ID- 11770

21. Which of the following crystals does not exhibit Frenkel defect?

(A) AgBr
(B) AgCI
(C) KBr
(D) ZnS

Sep 04, 2022 at 07:12 PM

Multiple Choice

ID- 11779

22. What type of stoichiometric defect is shown by ZnS?

(A) Schottky defect
(B) Frenkel defect
(C) Both Frenkel and Schottky defects
(D) Non-stoichiometric defect

Sep 05, 2022 at 06:23 AM

Multiple Choice

ID- 11780

23. Silver halides generally show:

(A) Schottky defect
(B) Frenkel defect
(C) both Frenkel and Schottky defects
(D) cation excess defect

Sep 05, 2022 at 06:25 AM

Multiple Choice

ID- 11781

24. Which of the following will have metal deficiency defect?

(A) NaCI
(B) FeO
(C) KCI
(D) ZnO

Sep 05, 2022 at 06:26 AM

Multiple Choice

ID- 11782

25. In a Schottky defect.

(A) an ions moves to interstitial position between the lattice points
(B) electrons are tapped in a lattice site
(C) some lattice sites are vacant
(D) some extra cations are present in interstitial space

Sep 05, 2022 at 06:29 AM

Multiple Choice

ID- 11783

26. To get n-type of semiconductor, germanium should be doped with:

(A) gallium
(B) arsenic
(C) aluminium
(D) boron

Sep 05, 2022 at 06:34 AM

Multiple Choice

ID- 11784

27. p-type semiconductors are formed when Si and Ge are droped with:

(A) group 14 elements
(B) group 15 elements
(C) group 13 elements
(D) group 18 elements

Sep 05, 2022 at 06:34 AM

Multiple Choice

ID- 11785

28. Which of the following conditions favours the existence of a substance in the solid state?

(A) High temperature
(B) Low temperature
(C) High thermal energy
(D) Weak cohesive forces

Sep 05, 2022 at 06:36 AM

Multiple Choice

ID- 11786

BSEB, 2017 (A), 2019 (C)

29. Which of the following is an amorphous solid?

(A) Graphite (C)
(B) Quartz glass (SiO₂)
(C) Chrome alum
(D) Silicon carbide (SiC)

Sep 05, 2022 at 06:39 AM

Multiple Choice

ID- 11787

BSEB, 2011 (A)

30. When an electron occupies the empty space of negatively charged ions, then the defect in crystal is:

(A) Schottky defect
(B) Frenkel defect
(C) F-centre
(D) None of these

Sep 05, 2022 at 06:43 AM

Multiple Choice

ID- 11788

31. Iodine molecules are held in the crystals lattice by .......... .

(A) London forces
(B) dipole-dipole interactions
(C) covalent bonds
(D) coulombic forces

Sep 05, 2022 at 06:45 AM

Multiple Choice

ID- 11789

32. Which of the following is a network solid?

(A) SO_{2 (solid)}
(B) I₂
(C) Diamond
(D) H₂O_(Ice)

Sep 05, 2022 at 06:47 AM

Multiple Choice

ID- 11790

33. Graphite is a good conductor of electricity due to the presence of .......... .

(A) lone pair of electrons
(B) free valence electrons
(C) cations
(D) anions

Sep 05, 2022 at 06:48 AM

Multiple Choice

ID- 11791

34. Which of the following oxides behaves as conductor or insulator depending upon temperature?

(A) TiO
(B) SiO₂
(C) TiO₃
(D) MgO

Sep 05, 2022 at 06:51 AM

Multiple Choice

ID- 11792

BSEB, 2017 (A)

35. Which of the following oxides shows electrical properties like metals?

(A) SiO₂
(B) MgO
(C) SO₂(s)
(D) CrO₂

Sep 05, 2022 at 06:52 AM

Multiple Choice

ID- 11793

36. Cations are present in the interstitial sites in .......... .

(A) Frenkel defect
(B) Schottky defect
(C) Metal Excess defect
(D) Vacancy defect

Sep 05, 2022 at 06:54 AM

Multiple Choice

ID- 11794

37. Which of the following is true about the charge acquired by p-type semiconductors?

(A) positive
(B) neutral
(C) negative
(D) depends on concentration of p impurity

Sep 05, 2022 at 06:57 AM

Multiple Choice

ID- 11795

38. To get a n-type semiconductors from silicon, it should be doped with a substance with valence .......... .

(A) 2
(B) 1
(C) 3
(D) 5

Sep 05, 2022 at 06:59 AM

Multiple Choice

ID- 11796

BSEB, 2012

39. What is the co-ordination number of sodium in Na₂O?

(A) 6
(B) 4
(C) 8
(D) 2

Sep 05, 2022 at 07:02 AM

Multiple Choice

ID- 11797

40. What is a co-ordination number in a square close packed structure in two dimensions?

(A) 2
(B) 3
(C) 4
(D) 6

Sep 05, 2022 at 07:02 AM

Multiple Choice

ID- 11798

41. Which kind of defects are introduced by doping?

(A) Dislocation defects
(B) Schottky defects
(C) Frenkel defects
(D) Electronic defects

Sep 05, 2022 at 07:03 AM

Multiple Choice

ID- 11799

BSEB, 2021 (A)

42. An example of amorphous solid is:

(A) Diamond
(B) Graphite
(C) Salt
(D) Rubber

Sep 05, 2022 at 07:04 AM

Multiple Choice

ID- 11800

43. Which of the following defects is also known as dislocation defect?

(A) Frenkel defect
(B) Schottky defect
(C) Non-stoichiometric defect
(D) Simple interstitial defect

Sep 05, 2022 at 07:06 AM

Multiple Choice

ID- 11801

BSEB, 2016 (C)

44. In fcc cubic cell, an atom at the face centre is shared by:

(A) 6 unit cell
(B) 1 unit cell
(C) 2 unit cell
(D) 4 unit cell

Sep 05, 2022 at 07:07 AM

The Solid State

Board » Bihar Board » Class 12th » English Medium » Science » Chemistry » Part-1 » Unit 1: The Solid State

Objective Questions (MCQs)

1. Which of the following is a crystalline solid?

2. Which of the following oxides shows ferro-magnetism?

3. Cystals are:

4. The number of basic crystal system is:

5. In a crystal system AB with of the following crystal system will have parameters, a ≠ b ≠ c and α = β = γ = 90°?

6. Percentage of free space in bcc. unit cell is:

7. In which of the following pairs of structure as tetrahedral as well as octahedral respectively?

8. The coordination number of a metal crystallizing in hexagonal close bracket (hcp) structure is:

9. Which one of the following is non-crystalline or amorphous?

10. How many chloride ions are surrounding sodium ion in sodium chloride crystal?

11. In NaCI structure:

12. In zinc blende structure:

13. A unit cell of BaCI2 (fluorite structure) is made up of:

14. Alkali haldis do not show Frenkel defect because:

15. In hcp structure, the packing fractions is:

16. The number of atoms in 100g crystal of an fcc crystal which density d = 10g/cm3 and cell edge as 200 pm is equal to:

17. Edge length of unit cell of chromium metal is 287 pm with bcc arrangement. The atomic radius is of the order:

18. The density of a metal crystallises in bcc lattice with units cell edge length 300 pm and molar mass 50g mol–1 will be:

19. The distance between NA+ and CI– ions in NaCI with a density 2.165 g cm–3 is:

20. Fe3O4 (magnetite)is an example of:

21. Which of the following crystals does not exhibit Frenkel defect?

22. What type of stoichiometric defect is shown by ZnS?

23. Silver halides generally show:

24. Which of the following will have metal deficiency defect?

25. In a Schottky defect.

26. To get n-type of semiconductor, germanium should be doped with:

27. p-type semiconductors are formed when Si and Ge are droped with:

28. Which of the following conditions favours the existence of a substance in the solid state?

29. Which of the following is an amorphous solid?

30. When an electron occupies the empty space of negatively charged ions, then the defect in crystal is:

31. Iodine molecules are held in the crystals lattice by .......... .

32. Which of the following is a network solid?

33. Graphite is a good conductor of electricity due to the presence of .......... .

34. Which of the following oxides behaves as conductor or insulator depending upon temperature?

35. Which of the following oxides shows electrical properties like metals?

36. Cations are present in the interstitial sites in .......... .

37. Which of the following is true about the charge acquired by p-type semiconductors?

38. To get a n-type semiconductors from silicon, it should be doped with a substance with valence .......... .

39. What is the co-ordination number of sodium in Na2O?

40. What is a co-ordination number in a square close packed structure in two dimensions?

41. Which kind of defects are introduced by doping?

42. An example of amorphous solid is:

43. Which of the following defects is also known as dislocation defect?

44. In fcc cubic cell, an atom at the face centre is shared by:

13. A unit cell of BaCI₂ (fluorite structure) is made up of:

16. The number of atoms in 100g crystal of an fcc crystal which density d = 10g/cm³ and cell edge as 200 pm is equal to:

18. The density of a metal crystallises in bcc lattice with units cell edge length 300 pm and molar mass 50g mol^–1 will be:

19. The distance between NA⁺ and CI^– ions in NaCI with a density 2.165 g cm^–3 is:

20. Fe₃O₄ (magnetite)is an example of:

39. What is the co-ordination number of sodium in Na₂O?