NCERT MCQ CLASS-12 CHAPTER-1 | CHEMISTRY NCERT MCQ | THE SOLID STATE | EDUGROWN

In This Post we are  providing Chapter-1 The Solid State NCERT MCQ for Class 12 Chemistry which will be beneficial for students. These solutions are updated according to 2021-22 syllabus. These MCQS  can be really helpful in the preparation of Board exams and will provide you with a brief knowledge of the chapter.

NCERT MCQ ON THE SOLID STATE

Question 1.
Which one of the following is non-crystalline or amorphous?
(a) Diamond
(b) Graphite
(c) Glass
(d) Common Salt

Answer: (c) Glass

Question 2.
NaCl type crystal (with coordination no. 6 : 6) can be converted into CsCl type crystal (with coordination no. 8 : 8) by applying
(a) high temperature
(b) high pressure
(c) high temperature and high pressure
(d) low temperature and low pressure

Answer: (b) high pressure

Question 3.
How many chloride ions are surrounding sodium ion in sodium chloride crystal ?
(a) 4
(b) 8
(c) 6
(d) 12

Answer: (c) 6

Question 4.
In NaCl 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

Answer: (b) only octahedral sites are occupied

Question 5.
In Zinc blende structure
(a) zinc ions occupy half of the tetrahedral sites
(b) each Zn^2- ion is surrounded by six sulphide ions
(c) each S^2- ion is surrounded by six Zn²⁺ ions
(d) it has fee structure

Answer: (c) each S^2- ion is surrounded by six Zn²⁺ ions

Question 6.
A unit cell of BaCl₂ (fluorite structure) is made up of
(a) four Ba²⁺ ions and four Cl^– ions
(b) four Ba^2- ions and eight Cl^– ions
(c) eight Ba² ions and four Cl^– ions
(d) four Ba² ions and six Cl^– ions

Answer: (b) four Ba^2- ions and eight Cl^– ions

Question 7.
Alkali halides 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: (a) cations and anions have almost equal size

Question 8.
The coordination number of Y will be in the XY types of crystal:
(a) 6
(b) 8
(c) 12
(d) 4

Answer: (a) 6

Question 9.
The fraction of the total volume occupied by the atoms present in a simple cube is
(a) π/4
(b) π/6
(c) π/3√2
(d) π/4√2

Answer: (b) π6

Question 10.
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

Answer: (c) 124.27 pm

Question 11.
The edge length of fee cell is 508 pm. If radius of cation is 110 pm, the radius of anion is
(a) 110 pm
(b) 220 pm
(c) 285 pm
(d) 144 pm

Answer: (d) 144 pm

Question 12.
The density of a metal which crystallizes in bcc lattice with unit cell edge length 300 pm and molar mass 50 g mol^-1 will be
(a) 10 g cm^-3
(b) 14.2 g cm^-3
(c) 6.15 g cm^-3
(d) 9.3 2 g cm^-3

Answer: (c) 6.15 g cm^-3

Question 13.
How many lithium atoms are present in a unit cell with edge length 3.5 Å and density 0.53 g cm^-3? (Atomic mass of Li = 6.94):
(a) 2
(b) 1
(c) 4
(d) 6

Answer: (a) 2

Question 14.
The distance between Na^– and CL^– ions in NaCl with a density 2.165 g cm^-3 is
(a) 564 pm
(b) 282 pm
(c) 234 pm
(d) 538 pm

Answer: (b) 282 pm

Question 15.
An element with atomic mass 100 has a bcc structure and edge length 400 pm. The density of element is
(a) 10.37 g cm^-3
(b) 5.19 g cm^-3
(c) 7.29 g cm^-3
(d) 2.14 g cm^-3

Answer: (b) 5.19 g cm^-3