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Chemistry Liquids and Solids Online Mcqs Test

Malik TahirLast Updated: October 14, 2025

Important Chemistry Solids Question and Answer

Total Questions:	150
Time Allowed:	60 Minutes
Total Marks:	150
How to Attempt Test:	Please choose the right Option in MCQ-type question.
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Chemistry Solids Practice Test Online With Explanation

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Page 1 of 6

Chemistry

1. How many Cl¯ ions are there around Na⁺ ion in NaCl crystal?

2. Which of the following pairs do not form a dative covalent bond to each other?

H₂O and H⁺

CH₄ and AlCl₃

NH₃ and BF₃

NH₃ and H⁺

3. Graphite is a good conductor of electricity due to the presence of ________.

Anions

Ione pair of electrons

Free valence electrons

Cations

4. The relative atomic mass of chlorine is 35.5. What is the m ass of 2 moles of chlorine gas?

142g

35.5g

71g

18.75g

5. Current strength measure by electrometer by each type of ions in mass spectrometry shows?

Relative abundance

Mass

Charge

Number of isotopes

6. An organic compound contains 49.3% carbon, 6.84% hydrogen and its vapour density is 73. Molecular formula of compound is

C₃H₅O₂

C₃H₁₀O₂

C₆H₁₀O₄

C₄H₁₀O₂

7. The example of hexagonal system is

Sulphur

Sugar

Diamond

Graphite

8. The vapour density of a gas is 11.2. The volume occupied by 11.2 g of this gas at N.T.P. is

22.4 liters

2.24 liters

1 liter

11.2 liters

9. Air at sea level is dense. This is a practical application of

Avogadro’s law

Charles’ law

Boyle’s law

Dalton’s law

10. Coordination number of Zn and ZnS (Zinc blends) is

None of these

11. In a cubic lattice, a unit cell is shared equally by how many unit cells?

12. A malleable solid is one which can be

Converted into sheets

All of these

Melted easily

Converted into wires

13. The insoluble impurities in the saturated solution are removed by

Both A & B

Fluted filter paper

None

Normal filter paper

14. Which solids are called true solids?

Metallic

Crystalline

Amorphous

Vitreous

15. Repeatable entity of a crystal structure is known as

Lattice

Crystal

Unit cell

Miller indices

16. How many allotropic forms are present in carbon?

Four

Two

Three

Five

17. Which one is not postulated in the kinetic molecular theory among the followings?

Molecules are in chaotic motion

All molecular collisions are elastic

Molecules of all the gases have same size and same mass

The volume of the molecules is negligible as compared to volume occupied by the gas

18. Which of the following statements about graphite is not true?

The coordination number of carbon atoms is 4

The carbon atoms are arranged layers

The layers in graphite are attracted to each other by weak forces

The carbon atoms use only three of their four outer electrons for covalent bonding

19. The kinetic energy of 4 moles of nitrogen gas at 127°C is? cals. (R = 2 cal mol¯¹ K¯¹)

1524

3200

4400

4800

20. Which of the following metal oxides is anti-ferromagnetic in nature?

TiO₂

CrO₂

NO₂

MnO₂

21. The molar volume of CO₂ is maximum at

S.T.P (0°C and 1 atm)

0°C and 2 atm

273°C and 2 atm

127°C and 1 atm

22. The volume in liters of CO₂ liberated at STP when 10 grams of 90% pure limestone is heated completely is

2.24

22.4

2.016

20.16

23. The ratio of most probable velocity to that of average velocity is

2/π

√π/2

2/√π

π/2

24. The major binding force of diamond, silicon and quartz is

Covalent bond

Non covalent bond force

Electrostatic force

Electrical attraction

25. Half atmospheric pressure is

50 662 Pa

400 torr

8.5 Pounds

101.325 Pa

Page 2 of 6

26. The following statements contained in a student’s laboratory report is a conclusion

Colour of the gas is greenish yellow

Oxide of the gas is strongly acidic

A gas is liberated

The gas is chlorine

27. If rate of diffusion of A is 5 times that of B, what will be the density ratio of A and B?

1/5

1/25

28. The introduction of Kelvin scale in thermometry is according to

Charles’ law

Dalton’s law

Graham’s law

Boyle’s law

29. What is the relative rate of effusion of CO and CO₂?

CO is 1.25 times faster than CO₂

Both diffused at the same time

CO is 3.75 times faster than CO₂

CO₂ is 1.25 times faster than CO

30. When one of the following statements is wrong for gases?

Confined gas exerts uniform pressure on the walls of its container in all directions

Mass of gas cannot be determined by weighing a container in which it is enclosed

Volume of the gas is equal to volume of container confining the gas

Gases do not have a definite shape and volume

31. The molecules of air don’t settle down. The is due to

Different molar mass

Pressure of dust particles in air

Non-polar nature of gases

Elastic collisions of gas molecules

32. Pressure remaining constant at which temperature the volume of a gas will become twice o what it is at 0°C

546 K

200 °C

0 K

546 °C

33. At STP, a container has 1 mole of Ar, 2 moles of CO₂, 3 moles of O₂ and 4 moles of N₂, Without changing the total pressure if one mole of O₂ is removed, the partial pressure of O₂

Change by 33%

Is changed by about 26%

Is unchanged

Is halved

34. In NaCl type structure, the coordination numbers of cation and anions are

8 and 4

6 and 4

6 and 6

4 and 4

35. Super conductors are derived from compounds of

Transition elements

p-block elements

Actinides

Lanthanides

36. 3.2 g of oxygen (At. Wt. = 16) and 0.2 g of hydrogen (At. Wt. = 1) are placed in a 1.12 L flask at 0°C. The total pressure of the gas mixture will be

1 atm

3 atm

2 atm

4 atm

37. Which of the following is isotropic

Borax

Mercury

Brass

Graphite

38. If the four tubes of a car are filled to the same pressure with N₂, O₂, H₂ and helium separately, then which one will be filled first

H₂

O₂

N₂

39. Correct order of intermolecular forces

Gas < liquid < solid

Gas = liquid = solid

Gas < liquid < solid

Liquid < gas < solid

40. Ice is ________ crystal

Ionic

Molecular

Covalent

Metallic

41. Gooch crucible is used for the filtration of precipitates having

High solubility

Low temperature

High concentration

High ignition temperature

42. Triple point of water is

273 K

373 K

193 K

203 K

43. In crystal structure of sodium chloride, the arrangement of Cl ions is

Fcc

Both fcc and bcc

None of these

Bcc

44. Which of the following techniques is a type paper chromatography in which solvent is in a pool at the bottom of the vessel?

Liquid gas chromatography

Ascending paper chromatography

Liquid solid chromatography

Descending paper chromatography

45. The coordination number 8:8 is found in the arrangement of

NaCl type structure

ZnS type structure

AB₂ type ionic compound

CsCl type structure

46. For c coordination number of four, anion sits at the center of ________ where corners are occupied by cations

Triangle

Octahedron

Tetrahedron

Cube

47. Potassium crystallizes with a

Ortho rhombic lattice

Orthogonal lattice

Cubic lattice

Triclinic

48. The surface formed by the breakage of a crystal is called _________ plane.

Cleavage

Unit

None

Crystal

49. In the equation PV = nRT which one cannot be numerically equal to R

8.31 JK¯¹ mol¯¹

8.31 L atm K¯¹ mol¯¹

8.31 x 10⁷ dynes Cm K¯¹ mol¯¹

8.31 x 10⁷ erg³ K¯¹ mol¯¹

50. Glass is a

Micro-crystalline solid

Gel

Super-cooled liquid

None of these

Page 3 of 6

51. Van der Waal’s forces exist in

Non-polar

All types of atoms and molecules

Covalent

Polar compounds

52. Which forms metallic crystals?

NH₄Cl

NaCl

SO₂

53. Which of the following equations represents the 2nd ionization energy of Na?

Na(g) → N²⁺ (g) + e¯

Na(g) → N²⁺ (g) + +¯

Na(s) → N²⁺ (g) + e¯

Na(s) → N²⁺ (g) + 2e¯

54. Which is trigonal crystal?

NaNO₃

MgSO₄

All

CaSO₄.2H₂O

55. The reaction 4NH₃ + 3O₂ → 2N₂ + 6H₂O indicates that

One mole of NH₃ will produce ½ mole of N₂

For the complete reaction of 2 moles of NH₃ 40g of O₂ are required

For the complete reaction of 2 mole of NH₃ 20g of O₂ are required

One mole of NH₃ will produce 6 moles of N₂

56. Which of the following has least mass?

3 x 10²³ atoms of C

2 gram atom of nitrogen

7.0 g of Ag.

1 mole of S

57. 100 g of CaCO₃ is treated with 1 liter of 1 NHCl. What would be the weight of CO₂ liberated after the completion of the reaction?

5.5 g

33 g

22 g

11 g

58. Wt. of 112 ml of oxygen at STP on liquefaction would be

0.32 g

0.16 g

0.96 g

0.64 g

59. Which one is not usually used for the crystallization?

Chloroform

Sulphuric acid

Acetone

Acetic acid

60. The existence of a substance in more than one solid modification is known as

None of these

Isomorphism

Polymorphism

Amorphism

61. The phenomenon in which a single substance exist in two or more crystalline forms is called

Polymorphism

Allotropy

Anisotropy

Isomorphism

62. Consider the physical properties of the gases. Which of the following statements about particles of gasses is incorrect? The particles are

Orderly arranged

Randomly moving

Having wide spaces

Causing pressure

63. Which of the following contain maximum number of atoms?

20 moles of S8

5.0 moles of SO₂

6 moles of S

44.8 dm3 CO₂ at S.T.P

64. Among solids, the highest melting point is exhibited by

Covalent solids

Molecular solids

Pseudo solids

Ionic solids

65. The most efficient solvent extraction method is by using

Repeated extraction and large portion of solvent

Single extraction and small portion of solvent

Repeated extraction and small portion of solvent

Single extraction and large portion of solvent

66. In case of elements the polymorphism is called

Crystalline forms

Isotopic form

Isomorphism

Allotropy

67. To prepare the medium sized crystal the hot filtrate is cooled

None

Slowly

Fast

Moderately

68. The material possessing superconducting properties is

Y B₂Cu₃O₇

Y Ba₂Cu₃O₇

Yb Ba₂Cu₂O₈

Hg Be₂Ca₂Cu₂O₈

69. The phenomenon in which a compound exists in two or more crystalline forms is called

Isomorphism

Allotropy

Polymorphism

Anisotropy

70. The beaker contains slurry of ice and water, the three thermometers Fahrenheit, Kelvin and centigrade placed in it. The thermometers are represented as A, B and C respectively. On which thermometer the lowest reading will be?

A and C have same reading and are less then B

71. Mean distance between atoms in the range of

25 nm

0.025 nm

0.25 nm

2.5 nm

72. Which of the following statement is correct if the intermolecular forces in liquids A, B and C are in the order A < B < C?

A and B evaporates at the same rate

A evaporates more readily than C

B evaporates more readily than A

B evaporates less readily than C

73. The body centered cubic arrangement is found in the crystal of

CuBr

AgBr

NH₄Br

CsBr

74. Poor conductors of electricity is a characteristic of

Metallic compounds

Ionic compounds

Covalent compounds

Diatic bonds

75. In diamond, the carbon atoms are arranged in a

Tetrahedral manner

Square planner manner

Altahydral manner

Hexagonal manner

Page 4 of 6

76. Which of the following are more temperature sensitive?

Liquid crystals

Ionic crystals

Solid crystals

None of these

77. In forming an ionic bond in potassium fluoride, the potassium ion

Gets a single negative charge

Gets a double negative charge

Gets a single positive charge

Gets a double positive charge

78. Ionic solids are characterized by

High vapour pressures

Good conductivity in solid state

Low melting points

Solubility in polar solvents

79. Amorphous substance posses

No sharp melting points

All of these

No definite geometry

No definite heat of fusion

80. The allotropic forms of an element are called

Cleavage

Isoelectronic

Allotropes

Unit Cell

81. A bottle of copper (II) oxide has been contaminated with some solid, NaCl, How can NaCl be removed from the Copper (II) oxide?

Add dilute acid to the mixture and filter

Heat the mixture and allow it to cool

Add water to the mixture and filter

Place the mixture in a separating funnel

82. At constant temperature, the pressure of an ideal gas is doubled, its density becomes

Same

None

Half

Double

83. Which of the following substance is amorphous in nature?

Kcl

Graphite

Plastic

Sugar

84. What will be the external pressure at which water may boil at 120°C?

1489 mm of Hg

700 mm of Hg

790 mm of Hg

100 mm of Hg

85. The weight of one molecule of a compound C₆₀H₁₂₂ is

5.01 x 10¯²¹ g

1.3 x 10¯²⁰ g

3.72 x 10¯²³ g

1.4 x 10¯²¹ g

86. A solution of 10 mL of M/10 FeSO₄ was titrated with KMnO₄ solution in acidic medium, the amount of KMnO₄ used will be

10 mL of 0.5 M

10 mL of 0.1 M

10 mL of 0.02 M

5 mL of 0.1 M

87. The pure crystalline substance on being heated gradually first forms a turbid liquid at constant temperature and still at higher temperature turbidity completely disappears. The behavior is a characteristic of substance forming

Isomeric crystals

Allotropic crystal

Isomorphous crystals

Liquid Crystals

88. Two moles of an ideal gas at 1 atm are compressed to 2 atm at 273 K. The enthalpy change for the process is

2 liter atm

3 liter atm

Zero

1 liter atm

89. Crystalline solids can be identified easily from their

Sharp melting point

Transition temperature

Colour

Definite geometry

90. What is the concentration of nitrate ions, if equal volumes of 0.1 M AgNO₃ and 0.1 M NaCl are mixed together?

0.25 M

0.05 M

0.2 M

0.1 M

91. The ratio of close packed atoms to tetrahedral holes in cubic close packing is

1 : 1

1 : 2

2 : 1

1 : 3

92. In a crystal a ≠ b ≠ c, a = ϒ = 90° and β ≠ 90°. It is

Trigonal

Monoclinic

Tetragonal

Rhombic

93. Number of atoms in 558.5 g of Fe (At. Mass of Fe = 55.85 g mole¯¹) is

Half that in 8 g of He

6.022 x 10²²

Twice that in 60 g carbon

558.5 x 6.022 x 10²³

94. Isotopes differ in

Properties which depend upon mass

Arrangement of electrons in orbitals

Chemical properties

The extent to which they may be affected in electron magnetic field

95. a ≠ b ≠ c, ∞ ≠ β ≠ r ≠ 90 is representation of

Mexagonal

Trigonal

Triclimic

Monoclimic

96. Which of the following is a pseudo solid?

CaF₂

Glass

NaCl

All these

97. In which of the following compounds H – bonding is not present?

Ethanol

Water

Ether

Ammonia

98. The volume occupied by 1.4g of N₂ at S.T.P is

1.12 dm³

112 cm³

22.4 dm³

2.24 dm³

99. A semiconductor of Ge can be made p-type by adding

Tetravalent

Pentavalent impurity

Divalent impurity

Trivalent impurity

100. An alkaloid contains 17.28% of nitrogen and its molecular mass is 162. The number of nitrogen atoms present in one molecule of alkaloid is:

Two

Three

Four

Five

Page 5 of 6

101. The deviation of a gas from ideal behavior is maximum at

0°C and 2.0 atm

-10°C and 2.0 atm

100°C and 2.0 atm

-10°C and 5.0 atm

102. The mass of one mole of electron is

1.008 mg

0.55 mg

0.104 mg

1.673 mg

103. Which of the following statements is (are correct)?

The coordination number of each type of ion in CsCl crystal is 8.

A metal that crystallizes in BCC structure has coordination number equal to 12

None of these

A unit cell of an ionic crystal shares some of its ions with other unit cells.

104. Which one of the following pair of atoms is most likely to from an ionic bond?

Na and F

N and F

O and F

C and F

105. The total number of protons in 10 g of calcium carbonate in (N₀ = 6.023 x 10²³)

4.0956 x 10 ²⁴

1.5057 x 10 ²⁴

2.0478 x 10 ²⁴

3.0115 x 10 ²⁴

106. A compound formed by elements X and Y crystallizes in a cubic structure in which the X atoms are at the corners of a cube and the Y atoms are at the face-centered. The formula of the compound is

X₃Y

XT₃

XY₂

107. When the following reaction equations is properly balanced, the number of moles of O₂ will be
C₃H₈ + O₂ → CO₂ + H₂O

1.5 moles

3.5 moles

10 moles

3 moles

108. Which of the following substances is not amorphous?

Ag NO₃

Polymer

Glass

Rubber

109. 4.4 g of CO₂ contains how many liters of CO₂ at STP?

2.24 liter

44 liter

2.4 liter

22.4 liter

110. Under what conditions real gases deviate from ideal behavior

High temperature

Low temperature

Both b and c

High pressure

111. What is the pressure of 2 mole of NH₃ at 27°C when its volume is 5 lit in Van der Waals equation? (a = 0.17, b = 0.03711)

9.2 atm

9.74 atm

10.33 atm

9.333 atm

112. The M.P of ice at Kelvin scale is 237K° and B.P of water is 373 K. This is a known fact that the molar volumes of different gases at S.T.P are

Much larger than the molar volumes of liquids and solids

About the same as the molar volumes of liquids

Little bit greater than the molar volumes of liquid

Little bit less than the molar volumes of solids

113. Which of the following statements about amorphous solids is incorrect?

There are rigid and in-compressible

There is no orderly arrangement of particles

They melt over a range of temperature

They are anisotropic

114. In which one of the following does the central atom not possess an ‘octet’ in its outer shell?

BH₃

H₂O

NH₃

CH₄

115. Which one is not the partial pressure of oxygen in air

159 mm Hg.

159 g/m³

159 torr

159 g/Cm²

116. Simple molecules or giant macromolecules are examples of

Ionic compounds

Diatic bond

Covalent bonds

Metallic bonds

117. Which is distilled first?

Liquid N₂

Liquid CO₂

Liquid H₂

Liquid O₂

118. Crystal can be classified in to _______ basic crystal habits

119. The crystal structure having face centered cubic arrangement is

NaCl

BaCl₂

CuCl

CsCl

120. Distribution law is employed in which one of the following

All

Crystallization

Solvent extraction

Chromatography

121. Isomorphic substances have

Different physical and chemical properties

Same physical and chemical properties

Different physical and same chemical properties

Same physical and different chemical properties

122. In which process solid phase and vapour phase are directly involved?

Filtration

Vaporization

Condensation

Sublimation

123. Amorphous solids

Have sharp melting point

Can possess small regions of orderly arrangement of atoms

Undergo clean cleave when cut with knife

Have perfect arrangement of atoms

124. Crystalline solids can be identified easily by their

Definite geometry

All of these

Transition temperature

Sharp m.P

125. Gases deviate from ideal behavior at high pressure. Which of the following is correct for non – ideality?

At high pressure, the collisions between the gas molecules are increased manifold

A high pressure, the volume of the gas becomes insignificant

At high pressure, the gas molecules move in one direction only

At high pressure, the intermolecular attraction becomes significant

Page 6 of 6

126. Which of the following does not represent a type of crystal system?

Triclinic

Isotropical

Monoclinic

Rhombohedral

127. The top of funnel stem should touch the side of the beaker because

This gives bigger size crystals

Filtrate runs down without crystals

The filtrate is quick

This gives medium size crystals

128. Isomorphic substance have

Different physical and same chemical properties

Same physical and chemical properties

Same physical and difference chemical properties

Different physical and chemical properties

129. Solvents of covalent compounds include all but

Tetra chloromethane

Water

Petrol

Alcohol

130. Crystals can be classified into

7 crystal systems

4 crystal systems

3 crystal systems

14 crystal systems

131. Bragg’s law is given by equation

nλ = 2 d sin θ

2nλ = d sin θ

nλ = 1/2d sin θ

nλ = 2 θ sin θ

132. The rate of diffusion of a gas is proportional to

P/d

√P/d

None of these

P/√d

133. Which of the following is an example of body centered cube?

Zinc

Copper

Sodium

Magneisum

134. When the temperature is raised, the viscosity of the liquid decreases. This is because of

Decreased volume of the solution

Increase in temperature increases the average kinetic energy of molecules which overcome the attractive force between them

Decreased covalent and hydrogen bond forces

Increased attraction between the molecules

135. ‘x’ grams of calcium carbonate was completely burnt in air. The weight of the solid residue formed is 28 g. What is the value of ‘x’ in grams?

150

200

136. Solvent extraction is mostly applied to separate

Both A and B

Organic compounds

Inorganic compounds

None of these

137. 50dm³ of CO is burnt completely according to reaction 2CO + O₂ – 2CO₂ Choose the correct statement

Volume of O₂ required is 25 dm³

Volume of O₂ required is 50 dm³

Volume of CO₂ formed is 60 dm³

Volume of CO₂ formed is 25 dm³

138. If we consider that 1/6, in place of 1/12, mass of carbon atom is taken to be the relative atomic mass unit, the mass of one mole of substance will

Be a function of the molecular mass of substance

Decrease twice

Increase two fold

Remains unchanged

139. Which of the following crystal does not possess the cubic closed packed arrangement?

Csl

Cul

HgS

Agl

140. The number of atoms contained in 11.2 L of SO₂ at S.T.P. are

2 x 6.02 x 10²³

6.02 x 10²³

3/2 x 6.02 x 10²³

4 x 6.02 x 10²³

141. A solid may be made up of

Ions

Molecules

Atoms

A, B and C

142. Fluted filter paper is used for

To dissolve large amount of substance at its boiling point

Filtering the hot saturated solution

Increasing the rate of filtration

To avoid premature crystallization of the solute

143. The total number of lattice arrangements in different crystal system is

7.0

8.0

3.0

144. Formation of a cation is?

Redox

Oxidation

None

Reduction

145. A real gas most closely approaches the behavior of an ideal gas at

1 atm, and 273 K

15 tm, and 500 K

0.5 atm, and 500 K

15 atm, and 200 K

146. The increasing vapour caused by heating a liquid is due to

Increase of K.E of molecules

Increase of intermolecular interactions

Decrease of surface tension

Increase in potential energy of molecules

147. Amorphous substances possess

No definite heat of fusion

Definite heat of fusion

Sharp melting points

Sharp B.P.

148. Particles that most effects material properties

Electrons

Neutrons

Valence electrons

Protons

149. Hydrogen diffuses six times faster than gas A. The molar mass gas of gas A is

150. Imagine a man is sitting in a room. The room is closed from all sides, no entry, no exit of any gas. If the room expands suddenly then

He will feel warmth

His blood pressure will increase

He will feel cool

There will be no change in the internal environment of the room

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Malik TahirLast Updated: October 14, 2025

3 Comments

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