# Semiconductors MCQ – Top 10 Basic Multiple Choice Questions on Semiconductors

Semiconductors multiple-choice questions (MCQ). Electrical Engineering MCQ on fundamental concepts of semiconductors. Test your basic concepts on semiconductors theory.

## Which of the following statement is correct about semi-conductors

Which of the following statement is correct about semi-conductors:

1. In its intrinsic state, a semiconductor is a good insulator and a bad conductor
2. In its intrinsic state, a semiconductor is neither a good insulator nor a good conductor
3. In its intrinsic state, a semiconductor is a bad insulator and good conductor

Correct answer: 2. In its intrinsic state, a semiconductor is neither a good insulator nor a good conductor

## Of mentioned elements which of following is a semiconductor

Of mentioned elements which of following is a semiconductor:

1. Boron
2. Copper
3. Aluminum
4. Silver

Correct answer: 1. Boron

## The most popular and common semiconductor material is

The most popular and common semiconductor material is:

1. Silicon
2. Tellurium
3. Polonium
4. Germanium

Correct answer: 1. Silicon

## What is the difference in energy between the valence band and the conduction band called

What is the difference in energy between the valence band and the conduction band called:

1. Valence
2. Space band
3. Jump
4. Energy gap

Correct answer: 4. Energy gap

## Order of length of bandgap in insulators, semiconductors, and conductor

Which of the following is correct order of length of bandgap in insulators, semiconductors, and conductor:

1. Semiconductors > Insulators > Conductors
2. Conductors > Semiconductors > Insulators
3. Insulators > Semiconductors > Conductors
4. Conductors > Inuslators > Semiconductors

Correct answer: 3. Insulators > Semiconductors > Conductors

## What is the number of valence electrons in Silicon

Number of valence electrons in Silicon are:

1. One
2. Two
3. Three
4. Four

Correct answer: 4. Four

## What are Intrinsic crystals

Intrinsic crystals are those having:

1. A few impurities
2. Huge impurities
3. No impurities

Correct answer: 3. No impurities

## Semiconductors MCQ#8

________________ occurs when a conduction-band electron loses energy and falls back into a hole in the valence band:

1. Recombination
2. Bandgap
3. Energy band

Correct answer: 1. Recombination

## Which type of impurity items are added to form N-type semiconductors

To form N-type semiconductors which type of impurity items are added:

1. Trialent
2. Pentavalent

Correct answers: 2. Pentavalent

## Which type of semiconductors have holes as the majority carriers

Holes are majority carriers in:

1. N-type semiconductors
2. P-type semiconductors

Correct answer: 2. P-type semiconductors