Question 1

Why are solids considered rigid?

Accepted Answer

The constituent particles in solids have fixed positions and can oscillate about their mean positions.

Answer

The particles in solids have high kinetic energy.

Answer

The particles in solids are free to move in any direction.

Answer

The particles in solids are loosely packed.

Question 2

What type of solids are electrical conductors, malleable and ductile?

Accepted Answer

Metallic solids

Answer

Amorphous solids

Answer

Ionic solids

Answer

Covalent solids

Question 3

Which type of solid has the same refractive index in all directions?

Accepted Answer

Amorphous solids

Answer

Crystalline solids

Answer

Metallic solids

Answer

Ionic solids

Question 4

What type of solid is defined as a supercooled liquid?

Accepted Answer

Glass

Answer

Copper

Answer

Diamond

Answer

Crystalline quartz

Question 5

What type of defect is produced when a solid is heated?

Accepted Answer

Vacancy defect

Answer

Schottky defect

Answer

Interstitial defect

Answer

Frenkel defect

Question 6

Which of the following is a characteristic of ionic solids in molten state?

Accepted Answer

They conduct electricity

Answer

They are malleable

Answer

They have low melting points

Answer

They are brittle

Question 7

What is the coordination number of an atom in a body-centered cubic structure?

Accepted Answer

8

Answer

12

Answer

4

Answer

6

Question 8

What defines the nature of a unit cell?

Accepted Answer

The dimensions and angles between edges

Answer

Its color

Answer

Its thermal conductivity

Answer

Its density

Question 9

Which type of unit cell has the highest packing efficiency?

Accepted Answer

Hexagonal close-packed lattice

Answer

Face-centered cubic

Answer

Body-centered cubic

Answer

Simple cubic

Question 10

Which solid type would likely form a permanent magnet?

Accepted Answer

Ferromagnetic substances

Answer

Ferrimagnetic substances

Answer

Paramagnetic substances

Answer

Diamagnetic substances

Question 11

Why are solids considered rigid?

Accepted Answer

The constituent particles in solids have fixed positions.

Answer

They are made up of gases.

Answer

They vibrate freely in space.

Answer

Their constituent particles are moving rapidly.

Question 12

What gives solids their definite volume?

Accepted Answer

The strong interparticle forces and small interparticle spaces.

Answer

The presence of gas in solids.

Answer

The high temperature of solids.

Answer

The movement of particles.

Question 13

Which of the following is a crystalline solid?

Accepted Answer

Copper

Answer

Fibreglass

Answer

Polyvinyl Chloride

Answer

Teflon

Question 14

Why is glass considered a supercooled liquid?

Accepted Answer

It exhibits some characteristics of liquids despite being an amorphous solid.

Answer

It flows like a liquid at room temperature.

Answer

It has a high melting point.

Answer

It can be easily molded.

Question 15

What does an isotropic solid mean?

Accepted Answer

It has the same properties in all directions.

Answer

It is exclusively crystalline.

Answer

It cannot conduct electricity.

Answer

It has varying properties in different directions.

Question 16

What type of solid is a diamond?

Accepted Answer

Covalent or network solid.

Answer

Molecular solid

Answer

Metallic solid

Answer

Ionic solid

Question 17

Which solids conduct electricity when molten?

Accepted Answer

Ionic solids.

Answer

Covalent solids

Answer

Amorphous solids

Answer

Metallic solids

Question 18

What characterizes metallic solids?

Accepted Answer

They are electrical conductors, malleable, and ductile.

Answer

They are brittle and rigid.

Answer

They are poor conductors of electricity.

Answer

They exist only in liquid form.

Question 19

What is a lattice point?

Accepted Answer

It denotes the position of a constituent in the crystal lattice.

Answer

It represents the temperature of the solid.

Answer

It describes the color of the solid.

Answer

It indicates the pressure applied to the solid.

Question 20

What defines the coordination number of an atom in a crystal?

Accepted Answer

The number of nearest neighbors of that atom.

Answer

The color of the atom.

Answer

The size of the atom.

Answer

The weight of the atom.

Question 21

Why are solids rigid?

Accepted Answer

The constituent particles in solids have fixed positions.

Answer

Solids have large spaces between their particles.

Answer

The constituent particles in solids are always moving.

Answer

The particles in solids are liquid-like.

Question 22

What type of solid is glass considered to be?

Accepted Answer

Amorphous solid.

Answer

Metallic solid

Answer

Ionic solid

Answer

Crystalline solid

Question 23

What is the refractive index of an isotropic solid?

Accepted Answer

The same value along all directions.

Answer

Zero across all directions

Answer

Always equal to one

Answer

Different values along different directions

Question 24

What type of solids are metallic solids?

Accepted Answer

Electrical conductors that are malleable and ductile.

Answer

Only hard and non-conducting

Answer

Brittle and non-conducting

Answer

Soft and gaseous

Question 25

What happens to ionic solids in the molten state?

Accepted Answer

They conduct electricity.

Answer

They freeze and become solid.

Answer

They dissolve in water.

Answer

They become non-conductive.

Question 26

Which type of solid is characterized by strong interparticle forces and defined volume?

Accepted Answer

Solids.

Answer

Gases

Answer

Liquids

Answer

Plasma

Question 27

What parameter characterizes a unit cell?

Accepted Answer

Dimensions along the three edges and the angles between them.

Answer

How it reacts with light

Answer

The color of the crystal

Answer

Only the number of atoms it contains

Question 28

Why are solids rigid?

Accepted Answer

The constituent particles in solids have fixed positions and can oscillate about their mean positions.

Answer

Solids have high temperatures making them rigid.

Answer

Solids are composed of fluids that keep them in shape.

Answer

The particles in solids can move freely.

Question 29

Why do solids have a definite volume?

Accepted Answer

The interparticle forces are very strong, and there are very few and small interparticle spaces.

Answer

Solids expand to fill their containers.

Answer

Solids have a liquid component that defines their volume.

Answer

Solids are compressible, like gases.

Question 30

Which of the following is a crystalline solid?

Accepted Answer

Copper

Answer

Fibreglass

Answer

Cellophane

Answer

Teflon

Question 31

Why is glass considered a supercooled liquid?

Accepted Answer

It exhibits some characteristics of liquids despite being an amorphous solid.

Answer

It has a fixed shape like a solid.

Answer

It flows easily under normal conditions.

Answer

It lacks any structural consistency.

Question 32

What type of solids conduct electricity when molten?

Accepted Answer

Ionic solids

Answer

Molecular solids

Answer

Amorphous solids

Answer

Metallic solids

Question 33

Which solid type is malleable and ductile?

Accepted Answer

Metallic solids

Answer

Amorphous solids

Answer

Ionic solids

Answer

Covalent solids

Question 34

What is the significance of a lattice point?

Accepted Answer

It denotes the position of a constituent in the crystal lattice.

Answer

It shows the weight distribution in the solid.

Answer

It represents the temperature of the solid.

Answer

It indicates the color of the solid.

Question 35

In which unit cell is the coordination number 12?

Accepted Answer

Cubic close-packed structure

Answer

Hexagonal unit cell

Answer

Simple cubic

Answer

Body-centered cubic

Question 36

Which type of defect can arise when a solid is heated?

Accepted Answer

Vacancy defect

Answer

Schottky defect

Answer

Interstitial defect

Answer

Frenkel defect

Question 37

Why are solids considered rigid?

Accepted Answer

The constituent particles in solids have fixed positions and can oscillate about their mean positions.

Answer

The particles are constantly moving around randomly.

Answer

The particles are loosely held together.

Answer

The particles have large spaces between them.

Question 38

What causes solids to have a definite volume?

Accepted Answer

Strong interparticle forces and very small interparticle spaces.

Answer

The particles are in a liquid state.

Answer

The large spaces between particles allow for volume changes.

Answer

The particles are gas-like and move freely.

Question 39

Which of the following is classified as a crystalline solid?

Accepted Answer

Copper

Answer

Teflon

Answer

Polyurethane

Answer

Cellophane

Question 40

Why is glass considered a supercooled liquid?

Accepted Answer

It shows some characteristics of liquids despite being an amorphous solid.

Answer

It has a liquid-like density.

Answer

It flows like a liquid.

Answer

It can change shape easily.

Question 41

What is indicative of an isotropic solid?

Accepted Answer

Same refractive index in all directions.

Answer

Ability to cleave easily.

Answer

Presence of a crystalline structure.

Answer

Different properties in different directions.

Question 42

What type of solid is characterized by being an electrical insulator in both solid and molten states?

Accepted Answer

Covalent or network solid.

Answer

Ionic solid

Answer

Amorphous solid

Answer

Metallic solid

Question 43

Why are ionic solids conducting in the molten state?

Accepted Answer

Ionic mobility increases upon melting.

Answer

They become liquid and conduct electricity like water.

Answer

They develop free electrons when heated.

Answer

The ions are fixed in place in the solid state.

Question 44

What type of solids are typically malleable and ductile?

Accepted Answer

Metallic solids.

Answer

Ionic solids

Answer

Covalent solids

Answer

Amorphous solids

Question 45

What does a lattice point represent in a crystal lattice?

Accepted Answer

The position of a constituent particle in the lattice.

Answer

The energy of the particles in the lattice.

Answer

The density of the solid.

Answer

The space between two particles.

Question 46

What characterizes the coordination number in a cubic close-packed structure?

Accepted Answer

It is 12.

Answer

It is 8.

Answer

It is 4.

Answer

It varies depending on the solid.

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