Solid State II
Get Free Online Tests for Solid State Solution, Solid States, Metals, Metal, States of Metals, Liquid State, Gaseous State
Questions
The crystal structure of CsCl is
- simple cube
- face centered cube
- body centered cube
- edge centered cube
The number of atoms per unit cell in a bcc crystal is
- 1
- 2
- 3
- 4
An example for metal deficiency defect is
- NaCl
- AgCl
- FeS
- CsCl
The value of electrical resistance at superconductivity state is
- 100
- 50
- 50
- 0
In a simple cubic cell, each point on the corner is shared by
- one unit cell
- two unit cells
- eight unit cells
- four unit cells
The wave length of X- rays is in the order of
- 10-4 cm
- 10-5 cm
- 10-7 cm
- 10-8 cm
The crystal used in the Laue experiment is
- nickel sulphide
- nickel
- zinc
- zinc sulphide
Semiconductors which exhibit conductivity due to the flow of excess negatively charged electrons are called
- superconductors
- n-type semiconductors
- p-type semiconductors
- insulators
The total number of atoms per unit cell in fcc system is
- 1
- 4
- 6
- 8
A mathematical relation to determine the inter atomic distance from x-rays diffraction pattern is _______ equation.
- Laue
- Bragg’s
- Schrodinger
- Van’t Hoff
Which of the following options represents Rutile?
- TiO2
- Cu2O
- MoS2
- Ru
Who suggested that crystal can be used as a three dimensional diffraction grating of rays?
- Laue
- Bragg
- Bohr
- Lavoiser
Which of the following options is an example for covalent crystal?
- NaCl
- Fe
- KCl
- diamond
Bragg’s equation is _______.
- 2λ = ndsinθ
- nλ = 2dcosθ
- nd = 2λcosθ
- nλ = 2dsinθ
Van Der Waal's forces are also called as
- dispersion forces
- diffusion forces
- chemical forces
- None of these
The force that binds a metal ion to a number of electrons within its sphere of influence is known as
- covalent bond
- ionic bond
- metallic bond
- coordinate covalent bond
Which one of the following belongs to AB type crystal?
- SiO2
- Cu2O
- ZnCl2
- ZnO
Which of the following statements is not true?
- The heats of vapourisation of ionic crystals are high.
- Ionic crystals are soluble in non polar solvents.
- Ionic crystals are hard and brittle.
- Ionic crystals are insulators in the solid state.
The angle θ in Bragg’s equation is angle of
- incidence
- deflection
- reflection
- refraction
The smallest fundamental repeating portion of a crystal is called
- space lattice
- unit cell
- isomorphism
- crystal system
Which of the following properties is directly proportional to Bragg’s spectrometer method?
- Ionisation current
- Intensity of reflected rays
- Angle of incidence
- Inter atomic distance
The wave length of gamma rays is in the order of
- 10—11 m
- 10—10 m
- 10—9 m
- 10—8 m
An ion leaves its regular site and occupies a position in the space between the lattice sites. What is this defect called?
- Schottky defect
- Frenkel defect
- Impurity defect
- Vacancy defect
Which of the following is a method of studying crystals using X–rays?
- Laue experiment
- Bragg’s spectrometer method
- Frenkel method
- Schottky method
The essential condition for diffraction to occur is given by
- Schrodinger equation
- Laue pattern
- Van’t Hoff equation
- Bragg’s equation