Most Important Solids Quiz Test Online

Solids Quiz Test Online

Solids Test. 1

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

Ionic crystal

Molecular crystal

Covalent crystal

Metallic crystal

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

Polymorphism

Isomorphism

Anisotropy

Allotropy

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3) A solid may be made up of

Molecues

all of these

Ions

Atoms

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

Zero P.E.

Maximum P.E.

Infinite P.E.

Minimum P.E.

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

All are possible

bc=γ, ca=β, ab=α

bc=α, ca=β, ab=γ

bc=β, ca=α, ab=γ

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6) Total unit cell dimensions are

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7) Which ionic solid has highest lattice energy

KCl

NaCl

CsCl

LiCl

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8) Ionic solids are characterized by:

Low melting point

Solubility in polar solvent

High vapor pressure

Good conductivity in solid state

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9) Which of the following is anisotropic

Water

Quartz

Rubber

Hydrogen

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

Isomorph and allotrope

Isomorph and polymorph

All of these

Allotrope and polymorph

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

Dipole - Dipole forces

Debye forces

London dispersion forces

Hydrogen bonding

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12) Which of the following is not amorphous solid

Table salt

Rubber

Glue

Glass

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13) Which of the following is isotropic property

Refractive index

Coefficient of thermal expansion

Metallic conduction

Cleavage

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

a!=b!=c and 𝛼=𝛽=𝛾=90∘

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∘

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15) Crystalline parts of otherwise amorphous solids are known as

Allotrope

Isomorph

Crystallites

Polymorph

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16) Transition temperature of Sulphur is

32.02

95.5 C

13.2 C

128 C

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

Have low empty spaces

Becomes less tight

Have close packing

Have strong electrostatic forces

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

Trigon

Hexgonal

Tetragonal

Cubic

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19) Which solids are called true solids?

Metallic

Crystalline

Amorphous

Vitreous

20 / 20

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

Face centered cubic

Hexagonal

Body centered cubic

Simple Cubic

Your score is

The average score is 51%

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Solids Test. 2

1 / 18

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

Ionic

Metallic

Molecular

Covalent

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

Anisotropy

Cleavage plane

Isomorphism

Symmetry

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3) The coordination number of each ion in NaCl 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) Lattice energy is also called:

Potential energy

Energy of affinity

Crystal energy

Bond energy

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

NaCl

LiCl

KBr

KCl

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7) 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 cuts diamond

Diamond does not conduct heat and electricity

Diamond is very hard

Diamond has a high refractive index

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

9 / 18

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

Molecular crystal

Metallic crystal

Covalent crystal

Ionic crystal

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

Gemstone

Coal tar

Glass

Diamond

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

Naphthalene

Sugar

Dry ice

Iodine

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

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

Metallic appearance

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

Face-centered cubic

13 / 18

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

14 / 18

14) The best conductors of electricity are:

Metallic solids

Ionic solids

Molecular solids

Covalent solids

15 / 18

15) The crystalline form of white tin is:

All of these

Tetragonal

Cubic

Hexagonal

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

Anisotropic

Isotropic

Both Anisotropic and A good conductor of electricity

A good conductor of electricity

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17) Independent molecule of NaCl may exist in

Solid phase

Vapour phase

Liquid phase

All of the above

18 / 18

18) Molecular crystals are generally:

Always polar

Soft

Hard

Very hard

Your score is

The average score is 58%

Most Important Solids Quiz Test Online

Solids Quiz Test Online

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Solids Quiz Test Online

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