Solid State(General Knowledge > General Science ) Questions and answers for exam Preparation

Question 1. Based on the nature of intermolecular forces, classify the following solids : Silicon carbide

Ionic solid
Covalent solid
Molecular solid
Metallic solid

Explanation:-

Answer: Option B. -> Covalent solid

Question 2. Which of the following is an amorphous solid?

Copper(Cu)
Quartz glass (SiO2)
Silicon carbide (SiC)
Sodium Chloride (NaCl)

Explanation:-

Answer: Option B. -> Quartz glass (SiO2)

Question 3. On doping Ge metal with a little of In(Indium) we get

n - type semiconductor
p-type semiconductor
insulator
rectifier

Explanation:-

Answer: Option B. -> p-type semiconductor

Question 4. Percentage of free space in BCC unit cell is

34%
28%
30%
32%

Explanation:-

Answer: Option D. -> 32%

Question 5. A cubic solid is made of two elements P and Q

PQ
P2Q
PQ2
PQ4

Explanation:-

Answer: Option A. -> PQ

Question 6. Which of the following is a network solid or covalent crystalline solid?

Diamond (C)
H2O (Ice)
Calcium Fluoride (CaF2)
Iron Metal (Fe)

Explanation:-

Answer: Option A. -> Diamond (C)

Question 7. Anionic sites occupied by unpaired electrons are called

F Centres
Interstitial Centres
Cationic Centres
Anionic Centres

Explanation:-

Answer: Option A. -> F Centres

Question 8. The type of crystalline solid which is a good conductor in solid as well as molten state?

Ionic Solid
Metallic Solid
Covalent Solid
Molecular Solid

Explanation:-

Answer: Option B. -> Metallic Solid

Question 9. Niobium crystallises in body-centred cubic structure

331 pm
143 pm
331 nm
143 nm

Explanation:-

Answer: Option B. -> 143 pm

Question 10. Defect shown by ionic crystals with large difference in size

Schottky Defect
Impurity Defect
Frenkel Defect
Metal Deficiency Defect

Explanation:-

Answer: Option C. -> Frenkel Defect