BITSAT Chemistry The Solid State MCQs

Question: The number of atoms per unit cell of bcc structure is

a) 1

b) 2

c) 4

d) 6

Answer: 2

Question: Al (at. wt 27) crystallizes in the cubic system with a cell edge of 4.05 Å . Its density is 2.7 g per cm³. Determine the unit cell type calculate the radius of the Al atom

a) fcc, 2.432 Å

b) bcc, 2.432 Å

c) bcc, 1.432 Å

d) fcc, 1.432 Å

Answer: fcc, 1.432 Å

Question:  The non stoichiometric compound Fe_0.94O is formed when x % of Fe²⁺ ions are replaced by as many Fe³⁺ ions, x is

a) 18

b) 12

c) 15

d) 6

Answer: 18

Question: Graphite is a

a) Molecular solid

b) Covalent solid

c) Ionic solid

d) Metallic solid

Answer: Covalent solid

Question: Due to Frenkel defect, the density of ionic solids

a) Decreases

b) Increases

c) Does not change

d) Changes

Answer: Does not change

Question: The fraction of total volume occupied by the atoms present in a simple cube is

a)

b)

c)

d)

Answer:

Question: The atomic radius of atom is r.Total volume of atoms present in a fcc unit cell of an element is

a)

b)

c)

d) None

Answer:

Question: Which of the folliowing metal oxides is antiferromagnetic in nature?

a) MnO₂

b) TiO₂

c) VO₂

d) CrO₂

Answer: VO₂

Question: Graphite is a

a) Molecular solid

b) Covalent solid

c) Ionic solid

d) Metallic solid

Answer: Covalent solid

Question: The number of atoms per unit cell of bcc structure is

a) 1

b) 2

c) 4

d) 6

Answer: 2