Most Important Solids Quiz Test Online

Solids Quiz Test Online

Solids Test. 1

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1) Cubic crystal system has the following unit cell dimensions (!= represents not equal )

a=b!=c and 𝛼=𝛽=90∘, 𝛾=120∘

a=b!=c and 𝛼=𝛽=𝛾=90∘

a!=b!=c and 𝛼=𝛽=𝛾=90∘

a=b=c and 𝛼=𝛽=𝛾=90∘

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2) Which of the following intermolecular forces are present in solid iodine

Debye forces

Dipole - Dipole forces

London dispersion forces

Hydrogen bonding

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3) In crystal structure of NaCl, the arrangement of Cl- ions is

Simple Cubic

Face centered cubic

Hexagonal

Body centered cubic

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4) Total unit cell dimensions are

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5) Which of the following is anisotropic

Quartz

Hydrogen

Rubber

Water

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6) Ionic solids are characterized by:

Solubility in polar solvent

High vapor pressure

Good conductivity in solid state

Low melting point

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7) Transition temperature of Sulphur is

128 C

32.02

13.2 C

95.5 C

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8) Crystalline parts of otherwise amorphous solids are known as

Crystallites

Allotrope

Isomorph

Polymorph

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9) Which solids are called true solids?

Vitreous

Crystalline

Metallic

Amorphous

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10) Which of the following is not amorphous solid

Rubber

Glue

Glass

Table salt

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11) Lattice energy decreases with the increase in size of ion because oppositely charged ions

Have low empty spaces

Have strong electrostatic forces

Have close packing

Becomes less tight

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12) Which ionic solid has highest lattice energy

KCl

CsCl

LiCl

NaCl

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13) In a crystal lattice the correct sequence of bond angles is

bc=β, ca=α, ab=γ

bc=γ, ca=β, ab=α

bc=α, ca=β, ab=γ

All are possible

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14) Coinage metals are Cu, Ag and Au and they have _______ crystal system.

Trigon

Tetragonal

Cubic

Hexgonal

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15) Transition temperature is shown by which of the following pairs:

All of these

Allotrope and polymorph

Isomorph and polymorph

Isomorph and allotrope

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16) When an element exist in more than one crystalline forms, it is known as

Allotropy

Anisotropy

Isomorphism

Polymorphism

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17) Which of the following is isotropic property

Metallic conduction

Refractive index

Coefficient of thermal expansion

Cleavage

18 / 20

18) A solid may be made up of

Molecues

Atoms

Ions

all of these

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19) In a crystal, the atoms are located at the position of

Minimum P.E.

Infinite P.E.

Zero P.E.

Maximum P.E.

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20) Which one has the highest melting point and boiling point

Ionic crystal

Covalent crystal

Metallic crystal

Molecular crystal

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Solids Test. 2

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1) The number of Cl⁻ ions per unit cell of a simple cubic lattice at the corners is:

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2) Molecular crystals are generally:

Very hard

Hard

Always polar

Soft

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3) The coordination number of Na⁺ in NaCl crystal is:

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4) In the structure of NaCl, each sodium ion is surrounded by how many chloride ions?

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5) The crystals formed due to London dispersion forces are:

Molecular

Ionic

Metallic

Covalent

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6) The coordination number of each ion in NaCl is:

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7) The crystalline form of white tin is:

Cubic

Tetragonal

All of these

Hexagonal

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8) Which of the following is an example of polar molecular solid

Sugar

Dry ice

Naphthalene

Iodine

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9) Which of the following has the highest lattice energy?

KBr

LiCl

NaCl

KCl

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10) In diamond, each of the four outer electrons on every carbon atom is involved in covalent bonding. This means that there are no free electrons available. Which property does this explain? (SET 2019)

Diamond has a high refractive index

Diamond cuts diamond

Diamond does not conduct heat and electricity

Diamond is very hard

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11) Lattice energy is also called:

Potential energy

Energy of affinity

Crystal energy

Bond energy

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12) Dry ice (solid CO₂) is an example of:

Ionic crystal

Covalent crystal

Metallic crystal

Molecular crystal

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13) Which of the following is incorrect about the structure of iodine (I₂)?

I-I(g)<I-I(s) bond length

Face-centered cubic

I-I(g)>I-I(s)

Metallic appearance

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14) Graphite is one of the allotropic forms of carbon. It is:

A good conductor of electricity

Isotropic

Both Anisotropic and A good conductor of electricity

Anisotropic

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15) Which of the following substances has a sharp melting point? (ETEA 2019)

Glass

Gemstone

Coal tar

Diamond

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16) Independent molecule of NaCl may exist in

Liquid phase

Vapour phase

All of the above

Solid phase

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17) The best conductors of electricity are:

Covalent solids

Molecular solids

Metallic solids

Ionic solids

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18)

The electrical conductivity of graphite is greater in one direction than in another due to: (MDCAT 2016)

Symmetry

Isomorphism

Anisotropy

Cleavage plane

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The average score is 82%

Most Important Solids Quiz Test Online

Solids Quiz Test Online

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Solids Quiz Test Online

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