Class 12 Chemistry Chapter 1 The Solid State MCQs | Class 12 Chemistry Chapter 1 The Solid State Objective Type Questions and Answers

Sports GK Questions and Answers 2024 (Latest Updated)

Awards & Honours GK Questions 2024 (Latest Updated)

Questions
1 In Zinc blende structure
A zinc ions occupy half of the tetrahedral sites
B each Zn2- ion is surrounded by six sulphide ions
C each S2- ion is surrounded by six Zn2+ ions
D it has fee structure

Answer:each S2- ion is surrounded by six Zn2+ ions
2 A unit cell of BaCl2 (fluorite structure) is made up of
A four Ba2+ ions and four Cl– ions
B four Ba2- ions and eight Cl– ions
C eight Ba² ions and four Cl– ions
D four Ba² ions and six Cl– ions

Answer:four Ba2- ions and eight Cl– ions
3 Alkali halids 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

Answer: cations and anions have almost equal size
4 The coordination number of Y will be in the XY types of crystal:
A 4
B 6
C 8
D 12

Answer:6
5 The fraction of the total volume occupied by the atoms present in a simple cube is
A π4
B π6
C π3√2
D π4√2

Answer: π6
6 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 All of the given

Answer:124.27 pm
7 How many unit cells are divided equally in a face-centred cubic lattice?
A 2
B 4
C 6
D 8

Answer:6
8 A crystalline solid:
A changes abruptly from solid to liquid when heated
B has no definite melting point
C undergoes deformation of its geometry easily
D has irregular 3-dimensional arrangements

Answer:changes abruptly from solid to liquid when heated
9 In a simple cubic, body-centred cubic and face-centred cubic structure, the ratio of the number of atoms present is respectively
A 8:1:6
B 1:2:4
C 4:2:1
D 4:2:3

Answer: 1:2:4
10 Na and Mg crystallize in crystals of bcc and fcc form respectively and then the amount of Na and Mg atoms present in their respective crystal unit cells is:
A 4 and 2
B 9 and 14
C 14 and 9
D 2 and 4

Answer: 2 and 4
11 Ferrous oxide has a cubic structure and each unit cell edge is 5.0Ao. Assuming the oxide density is 4.0g / cm3, the amount of Fe2+ and O2- ions in each unit cell will then be
A four Fe2+ and four O2-
B two Fe2+ and four O2-
C four Fe2+ and two O2-
D three Fe2+ and three O2-

Answer: four Fe2+ and four O2-
12 Each of the following solids shows the Frenkel defect except
A ZnS
B AgBr
C AgI
D KCl

Answer: KCl
13 Schottky defect in a crystal is observed when
A The ion leaves its normal position and occupies an interstitial location
B the unequal number of cation and anions are missing from the lattice
C the density of the crystal increases
D an equal number of cations and anions are missing from the lattice

Answer: an equal number of cations and anions are missing from the lattice
14 Copper crystalline in FCC with a unit cell length of 361pm. What is the radius of a copper atom?
A 128pm
B 157pm
C 181pm
D 108pm

Answer:128pm
15 The total no of voids in 0.5 mol of a compound forming hexagonal close-packed structure are:
A 6.022 × 1023
B 3.011 × 1023
C 9.033 × 1023
D 4.516 × 1023

Answer:9.033 × 1023
16 For the orthorhombic system, axial ratios are a ≠ b ≠ c and the axial angles are:
A α = β = γ ≠ 90o
B α ≠ β ≠ γ ≠ 90o
C α = β = γ = 90o
D α ≠ β ≠ γ = 90o

Answer: α = β = γ = 90o
17 Lithium has a bcc structure. Its density is 530 kg m–3 and its atomic mass is 6.94 g mol–1. Calculate the edge length of a unit cell of Lithium metal (NA = 6.02 × 1023 mol–1)
A 527 pm
B 264 pm
C 154 pm
D 352 pm

Answer:352 pm
18 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
A 7
B 8
C 5
D 6

Answer: 6
19 Which among the following solids crystalises as a face centred cube?
A Iron
B Rubidium
C Uranium
D Platinum

Answer: Platinum
20 Volume occupied by single CsCl ion pair in a crystal is 7.014 × 10–23 cm3. The smallest Cs – Cs internuclear distance is equal to length of the side of the cube corresponding to volume of one CsCl ion pair. The smallest Cs to Cs internuclear distance is nearly
A 4.4 Å
B 4.3 Å
C 4 Å
D 4.5 Å

Answer: 4 Å

Random GK Questions

Q. At which Harappan site have traces of a horse been found ?
Q. Which one of the following aroused a wave of popular indignation that led to the massacre by the British at Jallianwala Bagh ?
Q. Which strait separates the Red Sea from the Indian Ocean ?
Q. Who was the winner of the Golden Boot in the FIFA World Cup 2014?
Q. What is a Cross cheque ?
Q. A Black Market is a situation where in

Chapters

Assam Direct Recruitment Test Series

Teacher Eligibility Test

Assam Direct Recruitment Test Series