Electrical and magnetic properties of solids - class-XI
Description: electrical and magnetic properties of solids | |
Number of Questions: 47 | |
Created by: Shankara Prabhu | |
Tags: chemical bonding and molecular structure the solid state chemistry solid state |
Doping of $As$ with $Si$ is called :
An n-type semi-conductor is formed when a trace amount of impurity is added to silicon. The number of valence electrons in the impurity atom must be:
Which of the following statements is correct about the conduction of electricity in pure crystal of silicon at room temperature?
p type semi conductor is formed when trace amount of impurity is added to silicon. The number of valence electrons in the impurity atom must be:
Solar cell is constructed by connecting the semi conductors of_____________
A semiconductor obtained by doping silicon with elements of group 13 and group is respectively is
Which of the following acts as a superconductor at $4K$?
Addition of arsenic in small amount to pure germanium will result in the formation of
To get n-type doped semiconductor, impurity to be added to silicon should have number of valence electrons equal to:
A solid with high electrical and thermal conductivity is:
If we mix a pentavalent impurity in a crystal lattice of germanium, what type of semiconductor formation will occur?
Select the correct statement.
A semiconductor of Ge can be made p-type by adding which impurity?
Which of the following statement is correct?
Assertion: Group-$15$ doped crystals of silicon are called an n-type semiconductor.
Reason: Neutrons are responsible for the semiconducting properties.
The density for simple cubic lattice is :
Glass is an example of _____ solids.
Frenkel defect is observed in:
The electrical resistivity of a semiconductor:
Which of the following, when doped into ultrapure germanium, will convert it into a p-type semiconductor?
Mercury becomes superconducting at _________.
Superconductivity may be defined as a phenomenon in which metals, alloys and chemical compounds become perfect conductors with zero resistivity at temperatures approaching __________.
For most metals, the transition temperature lies between _________.
Which of the following represent(s) true statement(s)?
The temperature at which a substance starts behaving as super-conductor is called _________.
superconductors are _________.
The highest temperature at which superconductivity has been observed for alloys of niobium $(Nb 3Ge)$ is _______.
In a n-type semiconductor, which of the following statements is true?
$Tl 2Ca _2Ba _2Cu _3O _{10}$ possess superconductivity at __________.
Superconductors have applications in __________.
With which one of the following elements silicon should be doped so as to give p-type of semiconductor?
Which of the following statement is true about semiconductors?
Which of the following is true about the charge acquired by $p-$type semiconductors?
Which of the following oxides behaves as conductor or insulator depending upon temperature?
To get a $n-$type semiconductor from silicon, it should be doped with a substance with valence _______.
Statement-I The conductance through electrons is called n-type conduction and if through positive semi holes it is called p-type conduction.
Statement-II Doping involves the preparation of semiconductor by the addition of impurities in the intrinsic semiconductor.
Select the correct statement(s).
Assertion:
Reason:
Assertion: Group-$13$ doped crystals of Si are called p-type semiconductors.
Reason: Positive holes are responsible for the semiconducting properties.
Select the correct statement(s).
Very fast conduction of electricity by matter is called superconductivity. This happens when the matter is:
The newly discovered high-temperature superconductors are:
Germanium is an example of: