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MDCAT Chemistry Liquids and Solids Test Online

Malik TahirLast Updated: May 24, 2025

Chemistry Solids MCQS Online Test

MDCAT Chemistry Solids Chapter Online Test

Total Questions:	150
Time Allowed:	60 Minutes
Total Marks:	150
How to Attempt Test:	Please choose the right Option in MCQ-type question.
Test Helpful For:	MDCAT Entry Test Chemistry Online Test Interview Questions about Chemisttry All Universities Entrance Test Recruitments Tests

MDCAT Chemistry Solids Test

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Page 1 of 6

Chemistry

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

Condensation

Filtration

Sublimation

Vaporization

2. Formation of a cation is?

Reduction

None

Redox

Oxidation

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

Free valence electrons

Ione pair of electrons

Anions

Cations

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

Zinc

Copper

Magneisum

Sodium

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

Non covalent bond force

Covalent bond

Electrostatic force

Electrical attraction

6. 50dm³ of CO is burnt completely according to reaction 2CO + O₂ – 2CO₂ Choose the correct statement

Volume of CO₂ formed is 60 dm³

Volume of O₂ required is 50 dm³

Volume of CO₂ formed is 25 dm³

Volume of O₂ required is 25 dm³

7. A malleable solid is one which can be

Converted into wires

Converted into sheets

All of these

Melted easily

8. Which of the following is isotropic

Brass

Graphite

Mercury

Borax

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

AgBr

NH₄Br

CuBr

CsBr

10. 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:

Five

Three

Two

Four

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

3.72 x 10¯²³ g

1.3 x 10¯²⁰ g

1.4 x 10¯²¹ g

5.01 x 10¯²¹ g

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

Allotropy

Polymorphism

Isomorphism

Anisotropy

13. Crystalline solids can be identified easily by their

Sharp m.P

Transition temperature

Definite geometry

All of these

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

N and F

O and F

Na and F

C and F

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

20 moles of S8

44.8 dm3 CO₂ at S.T.P

6 moles of S

5.0 moles of SO₂

16. 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

1 liter atm

Zero

17. Simple molecules or giant macromolecules are examples of

Metallic bonds

Diatic bond

Covalent bonds

Ionic compounds

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

6.022 x 10²²

Half that in 8 g of He

558.5 x 6.022 x 10²³

Twice that in 60 g carbon

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

10 moles

1.5 moles

3 moles

3.5 moles

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

Plastic

Kcl

Sugar

Graphite

21. Correct order of intermolecular forces

Gas = liquid = solid

Gas < liquid < solid

Liquid < gas < solid

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

Na(s) → N²⁺ (g) + e¯

Na(g) → N²⁺ (g) + +¯

Na(g) → N²⁺ (g) + e¯

Na(s) → N²⁺ (g) + 2e¯

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

CsCl type structure

NaCl type structure

ZnS type structure

AB₂ type ionic compound

24. 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 0.1 M

10 mL of 0.5 M

10 mL of 0.02 M

5 mL of 0.1 M

25. 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

1 liter

11.2 liters

2.24 liters

Page 2 of 6

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

Normal filter paper

None

Both A & B

Fluted filter paper

27. 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

Increase two fold

Remains unchanged

Decrease twice

28. Which is distilled first?

Liquid CO₂

Liquid N₂

Liquid O₂

Liquid H₂

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

Gets a double negative charge

Gets a single negative charge

Gets a single positive charge

Gets a double positive charge

30. 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

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

Elastic collisions of gas molecules

Pressure of dust particles in air

Non-polar nature of gases

Different molar mass

32. The molar volume of CO₂ is maximum at

127°C and 1 atm

S.T.P (0°C and 1 atm)

0°C and 2 atm

273°C and 2 atm

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

Fcc

Both fcc and bcc

None of these

Bcc

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

Both diffused at the same time

CO is 3.75 times faster than CO₂

CO₂ is 1.25 times faster than CO

CO is 1.25 times faster than CO₂

35. The most efficient solvent extraction method is by using

Repeated extraction and large portion of solvent

Single extraction and large portion of solvent

Repeated extraction and small portion of solvent

Single extraction and small portion of solvent

36. Isotopes differ in

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

Arrangement of electrons in orbitals

Properties which depend upon mass

Chemical properties

37. Isomorphic substance have

Different physical and same chemical properties

Different physical and chemical properties

Same physical and chemical properties

Same physical and difference chemical properties

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

C₃H₅O₂

C₆H₁₀O₄

C₃H₁₀O₂

C₄H₁₀O₂

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

1/25

1/5

40. Triple point of water is

273 K

373 K

193 K

203 K

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

Trigonal

Tetragonal

Rhombic

Monoclinic

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

7.0

8.0

3.0

43. 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

Is halved

Is changed by about 26%

Change by 33%

Is unchanged

44. Crystalline solids can be identified easily from their

Colour

Sharp melting point

Transition temperature

Definite geometry

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

Divalent impurity

Tetravalent

Trivalent impurity

Pentavalent impurity

46. The material possessing superconducting properties is

Hg Be₂Ca₂Cu₂O₈

Y B₂Cu₃O₇

Y Ba₂Cu₃O₇

Yb Ba₂Cu₂O₈

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

None of these

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

√P/d

P/√d

P/d

None of these

49. 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?

33 g

22 g

5.5 g

11 g

50. Potassium crystallizes with a

Triclinic

Cubic lattice

Orthogonal lattice

Ortho rhombic lattice

Page 3 of 6

51. The mass of one mole of electron is

0.55 mg

0.104 mg

1.008 mg

1.673 mg

52. Amorphous substances possess

Sharp melting points

No definite heat of fusion

Definite heat of fusion

Sharp B.P.

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

Same

None

Half

Double

54. Isomorphic substances have

Different physical and chemical properties

Same physical and different chemical properties

Same physical and chemical properties

Different physical and same chemical properties

55. Ice is ________ crystal

Ionic

Molecular

Covalent

Metallic

56. Crystals can be classified into

7 crystal systems

3 crystal systems

4 crystal systems

14 crystal systems

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

Graham’s law

Dalton’s law

Charles’ law

Boyle’s law

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

Agl

HgS

Csl

Cul

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

Relative abundance

Charge

Mass

Number of isotopes

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

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

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

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

546 °C

546 K

200 °C

0 K

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

159 torr

159 g/m³

159 g/Cm²

159 mm Hg.

63. 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

O₂

N₂

H₂

64. Van der Waal’s forces exist in

Covalent

Polar compounds

Non-polar

All types of atoms and molecules

65. 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

66. Repeatable entity of a crystal structure is known as

Miller indices

Lattice

Crystal

Unit cell

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

Molecular solids

Ionic solids

Covalent solids

Pseudo solids

68. 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

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

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

Molecules are in chaotic motion

All molecular collisions are elastic

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

Boyle’s law

Avogadro’s law

Charles’ law

Dalton’s law

71. Mean distance between atoms in the range of

0.25 nm

0.025 nm

2.5 nm

25 nm

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

73. Solvent extraction is mostly applied to separate

Inorganic compounds

Both A and B

Organic compounds

None of these

74. 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

His blood pressure will increase

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

He will feel cool

He will feel warmth

75. 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

Little bit greater than the molar volumes of liquid

Little bit less than the molar volumes of solids

About the same as the molar volumes of liquids

Page 4 of 6

76. Ionic solids are characterized by

Low melting points

High vapour pressures

Solubility in polar solvents

Good conductivity in solid state

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

None

Fast

Moderately

Slowly

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

6.02 x 10²³

2 x 6.02 x 10²³

4 x 6.02 x 10²³

3/2 x 6.02 x 10²³

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

Allotropy

Polymorphism

Anisotropy

Isomorphism

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

Sulphuric acid

Chloroform

Acetone

Acetic acid

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

Liquid solid chromatography

Descending paper chromatography

Ascending paper chromatography

Liquid gas chromatography

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

0.5 atm, and 500 K

15 atm, and 200 K

15 tm, and 500 K

1 atm, and 273 K

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

Isomorphism

None of these

Polymorphism

Amorphism

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

0°C and 2.0 atm

100°C and 2.0 atm

-10°C and 2.0 atm

-10°C and 5.0 atm

85. Solvents of covalent compounds include all but

Water

Tetra chloromethane

Alcohol

Petrol

86. 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)

10.33 atm

9.2 atm

9.74 atm

9.333 atm

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

Triclinic

Isotropical

Monoclinic

Rhombohedral

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

4800

1524

3200

4400

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

Mexagonal

Monoclimic

Triclimic

Trigonal

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

They melt over a range of temperature

They are anisotropic

There are rigid and in-compressible

There is no orderly arrangement of particles

91. Half atmospheric pressure is

101.325 Pa

50 662 Pa

8.5 Pounds

400 torr

92. Poor conductors of electricity is a characteristic of

Metallic compounds

Covalent compounds

Ionic compounds

Diatic bonds

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

High concentration

Low temperature

High solubility

High ignition temperature

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

4 and 4

6 and 6

6 and 4

8 and 4

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

96. Amorphous substance posses

No sharp melting points

No definite heat of fusion

All of these

No definite geometry

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

Crystal

Unit

Cleavage

None

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

Octahedron

Tetrahedron

Triangle

Cube

99. Which forms metallic crystals?

SO₂

NH₄Cl

NaCl

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

Decreased volume of the solution

Increased attraction between the molecules

Decreased covalent and hydrogen bond forces

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

Page 5 of 6

101. A solid may be made up of

Ions

Molecules

Atoms

A, B and C

102. Which is trigonal crystal?

MgSO₄

NaNO₃

CaSO₄.2H₂O

All

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

Gases do not have a definite shape and volume

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

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

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

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

1.5057 x 10 ²⁴

3.0115 x 10 ²⁴

4.0956 x 10 ²⁴

2.0478 x 10 ²⁴

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

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

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

None of these

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

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

H₂O and H⁺

NH₃ and BF₃

NH₃ and H⁺

CH₄ and AlCl₃

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

0.1 M

0.05 M

0.25 M

0.2 M

108. Under what conditions real gases deviate from ideal behavior

High temperature

Both b and c

High pressure

Low temperature

109. Which solids are called true solids?

Crystalline

Metallic

Vitreous

Amorphous

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

2 : 1

1 : 3

1 : 1

1 : 2

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

22.4

2.016

20.16

2.24

112. Super conductors are derived from compounds of

p-block elements

Actinides

Transition elements

Lanthanides

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

Orderly arranged

Causing pressure

Having wide spaces

Randomly moving

114. Which of the following is a pseudo solid?

CaF₂

NaCl

All these

Glass

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

116. 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

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

700 mm of Hg

1489 mm of Hg

790 mm of Hg

100 mm of Hg

118. ‘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

119. Glass is a

Super-cooled liquid

None of these

Micro-crystalline solid

Gel

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

Water

Ethanol

Ammonia

Ether

121. The example of hexagonal system is

Graphite

Sugar

Sulphur

Diamond

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

142g

71g

35.5g

18.75g

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

One mole of NH₃ will produce 6 moles 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 ½ mole of N₂

124. Which of the following substances is not amorphous?

Glass

Rubber

Ag NO₃

Polymer

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

Chromatography

All

Solvent extraction

Crystallization

Page 6 of 6

126. 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

Liquid Crystals

Isomorphous crystals

Allotropic crystal

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

2/√π

√π/2

2/π

π/2

128. Amorphous solids

Have sharp melting point

Undergo clean cleave when cut with knife

Can possess small regions of orderly arrangement of atoms

Have perfect arrangement of atoms

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

A high pressure, the volume of the gas becomes insignificant

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

At high pressure, the intermolecular attraction becomes significant

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

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

131. 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

Place the mixture in a separating funnel

Heat the mixture and allow it to cool

Add water to the mixture and filter

132. 4.4 g of CO₂ contains how many liters of CO₂ at STP?

2.4 liter

44 liter

22.4 liter

2.24 liter

133. How many allotropic forms are present in carbon?

Four

Three

Two

Five

134. The allotropic forms of an element are called

Allotropes

Cleavage

Unit Cell

Isoelectronic

135. Fluted filter paper is used for

To avoid premature crystallization of the solute

Filtering the hot saturated solution

To dissolve large amount of substance at its boiling point

Increasing the rate of filtration

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

Tetrahedral manner

Altahydral manner

Hexagonal manner

Square planner manner

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

22.4 dm³

1.12 dm³

2.24 dm³

112 cm³

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

Filtrate runs down without crystals

This gives bigger size crystals

The filtrate is quick

This gives medium size crystals

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

Decrease of surface tension

Increase in potential energy of molecules

Increase of intermolecular interactions

Increase of K.E of molecules

140. Which of the following are more temperature sensitive?

Ionic crystals

None of these

Solid crystals

Liquid crystals

141. Which of the following has least mass?

3 x 10²³ atoms of C

1 mole of S

7.0 g of Ag.

2 gram atom of nitrogen

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

B evaporates more readily than A

A and B evaporates at the same rate

B evaporates less readily than C

A evaporates more readily than C

143. In case of elements the polymorphism is called

Allotropy

Isomorphism

Crystalline forms

Isotopic form

144. The crystal structure having face centered cubic arrangement is

CuCl

BaCl₂

CsCl

NaCl

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

MnO₂

TiO₂

NO₂

CrO₂

146. Bragg’s law is given by equation

2nλ = d sin θ

nλ = 2 d sin θ

nλ = 1/2d sin θ

nλ = 2 θ sin θ

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

0.96 g

0.64 g

0.16 g

0.32 g

148. 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

2 atm

3 atm

4 atm

1 atm

149. Particles that most effects material properties

Neutrons

Valence electrons

Electrons

Protons

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

NH₃

BH₃

CH₄

H₂O

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Malik TahirLast Updated: May 24, 2025

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3 Comments

Rehan Siddique says:

July 30, 2022 at 12:49 pm

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irfan ali says:

May 21, 2022 at 12:22 pm

i am live in kunri pak i give a test for entry test

irfan ali says:

May 21, 2022 at 12:21 pm

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