MCQ The Solid State Chapter 1 Class 12 Chemistry

MCQ’s For All Chapters – Chemistry Class 12th

1. There will be total 10 MCQ in this test.
2. Please keep a pen and paper ready for rough work but keep your books away.
3. The test will consist of only objective type multiple choice questions requiring students to mouse-click their correct choice of the options against the related question number.
4. No negative marking for incorrect choice.
5. Please click on “Finish the Test” when you want to exit.
6. All the best – Happy Studying

1. What will happen if sodium chloride is crystallised with a little amount of strontium chloride?

It will crystallize more sodium ions.

It will create metal deficiency.

It will create anionic vacancy.

It will create cationic vacancy.

Question 1 of 10

2. If the anionic site is occupied by an electron and it becomes part of the lattice it is called

T-centre

F-centre

E-centre

D-centre

Question 2 of 10

3. A p-type conductor is created on doping silicon with

Al

P

As

C

Question 3 of 10

4. Which of the following is NOT correct?

Doping can be done with an impurity which is electron rich or electron deficient.

Metals conduct electricity in solid as well as molten state.

Molecular orbitals of the solids are close in energy to each other and form band

none of the above

Question 4 of 10

5. In Schottky defect:

a lattice site is occupied by electron.

an ion occupies interstitial position between lattice points.

equal number of cations and anions are missing from the lattice sites.

the density of solid increases.

Question 5 of 10

6. Germanium or silicon becomes semiconductor due to

Frenkel defect

Schottky defect

Chemical impurity

Metal deficiency defect

Question 6 of 10

7. If germanium is doped with arsenic, what kind of semiconductor will be formed?

pn-type

p-type

n-type

diode

Question 7 of 10

8. If the constituent particles are missing from lattice site the defect is called as

Metal Deficiency.

Vacancy Defect.

Substitutional Defect.

Interstitial Defect.

Question 8 of 10

9. How many valence electrons are required in impurity, to be added to silicon, to get an an n-type semiconductor?

3

1

2

5

Question 9 of 10

10. When can anyone observe the Schottky defect?

An ion leaves its normal site and occupies an interstitial site.

Density of the crystal is increased.

Equal number of cations and anions are missing from the lattice.

Unequal number of cations and anions are missing from the lattice.

Question 10 of 10

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