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Solid State II

Description: Get Free Online Tests for Solid State Solution, Solid States, Metals, Metal, States of Metals, Liquid State, Gaseous State
Number of Questions: 25
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Tags: Solid State Solution Solid States Metals Metal States of Metals Liquid State Gaseous State Atomic Physics Atoms Physics of Semiconductors Semiconductor Electronics: Materials, Devices and Simple Circuits Imperfections in Solids Close Packing in Crystals,X-Ray Studies of Crystals Types of Packing
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The crystal structure of CsCl is

  1. simple cube

  2. face centered cube

  3. body centered cube

  4. edge centered cube


Correct Option: A
Explanation:

The crystal structure of CsCl is simple cube.

The number of atoms per unit cell in a bcc crystal is

  1. 1

  2. 2

  3. 3

  4. 4


Correct Option: B
Explanation:

The number of atoms per unit cell in a bcc crystal is 2.

An example for metal deficiency defect is

  1. NaCl

  2. AgCl

  3. FeS

  4. CsCl


Correct Option: C
Explanation:

An example for metal deficiency defect is FeS.

The value of electrical resistance at superconductivity state is

  1. 100

  2. 50

  3. 50

  4. 0


Correct Option: D
Explanation:

The value of electrical resistance at superconductivity state is 0.

In a simple cubic cell, each point on the corner is shared by

  1. one unit cell

  2. two unit cells

  3. eight unit cells

  4. four unit cells


Correct Option: C
Explanation:

In a simple cubic cell, each point on the corner is shared by eight unit cells.

The wave length of X- rays is in the order of

  1. 10-4 cm

  2. 10-5 cm

  3. 10-7 cm

  4. 10-8 cm


Correct Option: D
Explanation:

The wave length of X- rays is in the order of 10-8 cm.

The crystal used in the Laue experiment is

  1. nickel sulphide

  2. nickel

  3. zinc

  4. zinc sulphide


Correct Option: D
Explanation:

The crystal used in the Laue experiment is zinc sulphide.

Semiconductors which exhibit conductivity due to the flow of excess negatively charged electrons are called

  1. superconductors

  2. n-type semiconductors

  3. p-type semiconductors

  4. insulators


Correct Option: B
Explanation:

Semiconductors which exhibit conductivity due to the flow of excess negatively charged electrons are called n-type semiconductors.

The total number of atoms per unit cell in fcc system is

  1. 1

  2. 4

  3. 6

  4. 8


Correct Option: B
Explanation:

The total number of atoms per unit cell in fcc system is 4.

A mathematical relation to determine the inter atomic distance from x-rays diffraction pattern is _______ equation.

  1. Laue

  2. Bragg’s

  3. Schrodinger

  4. Van’t Hoff


Correct Option: B
Explanation:

A mathematical relation to determine the inter atomic distance from x-rays diffraction pattern is Bragg’s equation.

Which of the following options represents Rutile?

  1. TiO2

  2. Cu2O

  3. MoS2

  4. Ru


Correct Option: A
Explanation:

Rutile is the most common natural form of TiO2.

Who suggested that crystal can be used as a three dimensional diffraction grating of rays?

  1. Laue

  2. Bragg

  3. Bohr

  4. Lavoiser


Correct Option: A
Explanation:

Laue suggested that crystal can be used as a three dimensional diffraction grating of rays.

Which of the following options is an example for covalent crystal?

  1. NaCl

  2. Fe

  3. KCl

  4. diamond


Correct Option: D
Explanation:

Diamond is an example for covalent crystal.

Bragg’s equation is _______.

  1. 2λ = ndsinθ

  2. nλ = 2dcosθ

  3. nd = 2λcosθ

  4. nλ = 2dsinθ


Correct Option: D
Explanation:

Bragg’s equation is as follows: nλ = 2dsinθ

Van Der Waal's forces are also called as

  1. dispersion forces

  2. diffusion forces

  3. chemical forces

  4. None of these


Correct Option: A
Explanation:

Van Der Waal's forces are also called as dispersion forces.

The force that binds a metal ion to a number of electrons within its sphere of influence is known as

  1. covalent bond

  2. ionic bond

  3. metallic bond

  4. coordinate covalent bond


Correct Option: C
Explanation:

The force that binds a metal ion to a number of electrons within its sphere of influence is known as metallic bond.

Which one of the following belongs to AB type crystal?

  1. SiO2

  2. Cu2O

  3. ZnCl2

  4. ZnO


Correct Option: D
Explanation:

AB type of crystal belong to ZnO.

Which of the following statements is not true?

  1. The heats of vapourisation of ionic crystals are high.

  2. Ionic crystals are soluble in non polar solvents.

  3. Ionic crystals are hard and brittle.

  4. Ionic crystals are insulators in the solid state.


Correct Option: B
Explanation:

Ionic crystals are soluble in non polar solvents.

The angle θ in Bragg’s equation is angle of

  1. incidence

  2. deflection

  3. reflection

  4. refraction


Correct Option: C
Explanation:

The angle θ in Bragg’s equation is angle of reflection.

The smallest fundamental repeating portion of a crystal is called

  1. space lattice

  2. unit cell

  3. isomorphism

  4. crystal system


Correct Option: B
Explanation:

The smallest fundamental repeating portion of a crystal is called unit cell.

Which of the following properties is directly proportional to Bragg’s spectrometer method?

  1. Ionisation current

  2. Intensity of reflected rays

  3. Angle of incidence

  4. Inter atomic distance


Correct Option: D
Explanation:

Inter atomic distance is directly proportional to Bragg’s spectrometer method.

The wave length of gamma rays is in the order of

  1. 10—11 m

  2. 10—10 m

  3. 10—9 m

  4. 10—8 m


Correct Option: A
Explanation:

The wave length of gamma rays is in the order of 10—11 m.

An ion leaves its regular site and occupies a position in the space between the lattice sites. What is this defect called?

  1. Schottky defect

  2. Frenkel defect

  3. Impurity defect

  4. Vacancy defect


Correct Option: B
Explanation:

An ion leaves its regular site and occupies a position in the space between the lattice sites. This defect is called Frenkel defect.

Which of the following is a method of studying crystals using X–rays?

  1. Laue experiment

  2. Bragg’s spectrometer method

  3. Frenkel method

  4. Schottky method


Correct Option: B
Explanation:

The method of studying crystals using X–rays is Bragg’s spectrometer method.

The essential condition for diffraction to occur is given by

  1. Schrodinger equation

  2. Laue pattern

  3. Van’t Hoff equation

  4. Bragg’s equation


Correct Option: D
Explanation:

The essential condition for diffraction to occur is given by Bragg's equation.

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