English
Karnataka Board PUCPUC Science 2nd PUC Class 12

Which of the following oxides behaves as conductor or insulator depending upon temperature?

Advertisements
Advertisements

Question

Which of the following oxides behaves as conductor or insulator depending upon temperature?

Options

  • TiO

  • SiO2

  • TiO3

  • MgO

MCQ
Advertisements

Solution

TiO

Explanation:

TiO3 behaves as conductor or insulator depending on temperature because of variation of energy gap between valence band and conduction band with the variation of temperature.

shaalaa.com
  Is there an error in this question or solution?
Chapter 1: Solid States - Exercises [Page 3]

APPEARS IN

NCERT Exemplar Chemistry Exemplar [English] Class 12
Chapter 1 Solid States
Exercises | Q I. 13. | Page 3

RELATED QUESTIONS

p - type semi-conductors are made by mixing silicon with impurities of ______.


What type of semiconductor is obtained when silicon is doped with boron? 

 


To prepare n-type semiconductor the impurity to be added to silicon should have the following number of valence electrons:

(a) 2

(b) 3

(c) 4

(d) 5


When a hole is produced in P-type semiconductor, there is _______.


A pure semiconductor is ________.

(a) an extrinsic semiconductor

(b) an intrinsic semiconductor

(c) p-type semiconductor

(d) n-type semiconductor


A group of 14 elements is converted into n-type semiconductor by doping it with:


Group 14 element is converted to p-type semiconductor by doping it with:


In n-type semiconductor, current is carried by ____________.


Which transition metal oxide has appearance and conductivity like that of copper?


p-type semiconductors are formed when Si or Ge are doped with ____________.


To get a n-type semiconductor from silicon, it should be doped with a substance with valence ______.


Under the influence of electric field, which of the following statements is true about the movement of electrons and holes in a p-type semiconductor?

(i) Electron will move towards the positvely charged plate through electron holes.

(ii) Holes will appear to be moving towards the negatively charged plate.

(iii) Both electrons and holes appear to move towards the positively charged plate.

(iv) Movement of electrons is not related to the movement of holes.


A perfect crystal of silicon (Figure) is doped with some elements as given in the options. Which of these options show n-type semiconductors?


Explain why does conductivity of germanium crystals increase on doping with galium.


How does the doping increase the conductivity of semiconductors?


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×