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

CrO₂

MnO₂

TiO₂

NO₂

2. In case of elements the polymorphism is called

Isomorphism

Crystalline forms

Allotropy

Isotopic form

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

H₂O and H⁺

NH₃ and H⁺

NH₃ and BF₃

CH₄ and AlCl₃

4. 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

XT₃

X₃Y

XY₂

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

1 liter

22.4 liters

2.24 liters

11.2 liters

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

Add water to the mixture and filter

Add dilute acid to the mixture and filter

Heat the mixture and allow it to cool

Place the mixture in a separating funnel

7. Amorphous substances possess

Sharp melting points

Definite heat of fusion

No definite heat of fusion

Sharp B.P.

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

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

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

The coordination number of carbon atoms is 4

The carbon atoms are arranged layers

10. 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

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

5.01 x 10¯²¹ g

1.3 x 10¯²⁰ g

1.4 x 10¯²¹ g

3.72 x 10¯²³ g

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

0.64 g

0.32 g

0.96 g

0.16 g

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

Filtration

Condensation

Vaporization

Sublimation

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

CH₄

H₂O

BH₃

NH₃

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

-10°C and 2.0 atm

-10°C and 5.0 atm

0°C and 2.0 atm

100°C and 2.0 atm

16. Isomorphic substances have

Different physical and same chemical properties

Same physical and different chemical properties

Same physical and chemical properties

Different physical and chemical properties

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

Twice that in 60 g carbon

6.022 x 10²²

558.5 x 6.022 x 10²³

Half that in 8 g of He

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

1489 mm of Hg

790 mm of Hg

700 mm of Hg

100 mm of Hg

19. Isotopes differ in

Chemical properties

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

Arrangement of electrons in orbitals

Properties which depend upon mass

20. A malleable solid is one which can be

Melted easily

All of these

Converted into wires

Converted into sheets

21. 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

B evaporates more readily than A

B evaporates less readily than C

A evaporates more readily than C

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

None of these

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

Unit

Cleavage

None

Crystal

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

Gets a double negative charge

Gets a single negative charge

Gets a double positive charge

Gets a single positive charge

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

Rhombohedral

Isotropical

Monoclinic

Triclinic

Page 2 of 6

26. The example of hexagonal system is

Diamond

Sulphur

Graphite

Sugar

27. Mean distance between atoms in the range of

0.25 nm

0.025 nm

25 nm

2.5 nm

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

This gives medium size crystals

This gives bigger size crystals

The filtrate is quick

Filtrate runs down without crystals

29. 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

N₂

O₂

H₂

30. Solvent extraction is mostly applied to separate

Organic compounds

None of these

Both A and B

Inorganic compounds

31. A solid may be made up of

Molecules

Atoms

Ions

A, B and C

32. Glass is a

Super-cooled liquid

None of these

Gel

Micro-crystalline solid

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

At high pressure, the intermolecular attraction becomes significant

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

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

A high pressure, the volume of the gas becomes insignificant

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

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

8.0

3.0

7.0

36. Which solids are called true solids?

Amorphous

Vitreous

Crystalline

Metallic

37. 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

About the same as the molar volumes of liquids

Much larger than the molar volumes of liquids and solids

Little bit less than the molar volumes of solids

Little bit greater than the molar volumes of liquid

38. Crystalline solids can be identified easily from their

Colour

Sharp melting point

Definite geometry

Transition temperature

39. Triple point of water is

373 K

273 K

193 K

203 K

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

NaCl type structure

AB₂ type ionic compound

ZnS type structure

CsCl type structure

41. Which of the following substances is not amorphous?

Glass

Polymer

Ag NO₃

Rubber

42. 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?

11 g

22 g

5.5 g

33 g

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

Low temperature

High ignition temperature

High solubility

High concentration

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

Na and F

O and F

C and F

N and F

45. Simple molecules or giant macromolecules are examples of

Metallic bonds

Ionic compounds

Covalent bonds

Diatic bond

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

Solvent extraction

All

Crystallization

Chromatography

47. Solvents of covalent compounds include all but

Water

Petrol

Alcohol

Tetra chloromethane

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

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

Descending paper chromatography

Liquid gas chromatography

Ascending paper chromatography

Liquid solid chromatography

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

Monoclinic

Trigonal

Tetragonal

Rhombic

Page 3 of 6

51. Crystalline solids can be identified easily by their

Transition temperature

Definite geometry

All of these

Sharp m.P

52. Bragg’s law is given by equation

nλ = 2 θ sin θ

nλ = 2 d sin θ

nλ = 1/2d sin θ

2nλ = d sin θ

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

142g

71g

18.75g

35.5g

54. The material possessing superconducting properties is

Yb Ba₂Cu₂O₈

Hg Be₂Ca₂Cu₂O₈

Y Ba₂Cu₃O₇

Y B₂Cu₃O₇

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

1.12 dm³

2.24 dm³

22.4 dm³

112 cm³

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

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

Decreased volume of the solution

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

3.0115 x 10 ²⁴

4.0956 x 10 ²⁴

1.5057 x 10 ²⁴

2.0478 x 10 ²⁴

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

Moderately

Slowly

None

Fast

59. Which is distilled first?

Liquid O₂

Liquid CO₂

Liquid H₂

Liquid N₂

60. 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 unchanged

Change by 33%

Is changed by about 26%

Is halved

61. 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 CO₂ formed is 25 dm³

Volume of O₂ required is 50 dm³

Volume of CO₂ formed is 60 dm³

62. Which of the following are more temperature sensitive?

Solid crystals

Liquid crystals

None of these

Ionic crystals

63. Under what conditions real gases deviate from ideal behavior

Both b and c

Low temperature

High temperature

High pressure

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

15 atm, and 200 K

15 tm, and 500 K

0.5 atm, and 500 K

1 atm, and 273 K

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

Csl

HgS

Agl

Cul

66. Particles that most effects material properties

Neutrons

Protons

Electrons

Valence electrons

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

Anisotropy

Allotropy

Polymorphism

Isomorphism

68. Formation of a cation is?

Reduction

Redox

Oxidation

None

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

Elastic collisions of gas molecules

Non-polar nature of gases

Different molar mass

Pressure of dust particles in air

70. 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

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

His blood pressure will increase

He will feel cool

He will feel warmth

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

√π/2

π/2

2/√π

2/π

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

Allotropy

Anisotropy

Polymorphism

Isomorphism

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

None of these

√P/d

P/√d

P/d

74. 4.4 g of CO₂ contains how many liters of CO₂ at STP?

2.24 liter

22.4 liter

2.4 liter

44 liter

75. Super conductors are derived from compounds of

Actinides

Lanthanides

Transition elements

p-block elements

Page 4 of 6

76. 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

Allotropic crystal

Isomorphous crystals

Isomeric crystals

Liquid Crystals

77. 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

Five

Four

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

Both fcc and bcc

Fcc

Bcc

None of these

79. The molar volume of CO₂ is maximum at

0°C and 2 atm

273°C and 2 atm

S.T.P (0°C and 1 atm)

127°C and 1 atm

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

0.2 M

0.25 M

0.1 M

0.05 M

81. Potassium crystallizes with a

Triclinic

Cubic lattice

Orthogonal lattice

Ortho rhombic lattice

82. 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

5 mL of 0.1 M

10 mL of 0.02 M

83. 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

84. How many allotropic forms are present in carbon?

Three

Four

Two

Five

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

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

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

One mole of NH₃ will produce 6 moles of N₂

One mole of NH₃ will produce ½ mole of N₂

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

Divalent impurity

Tetravalent

Trivalent impurity

Pentavalent impurity

87. The crystal structure having face centered cubic arrangement is

NaCl

CsCl

CuCl

BaCl₂

88. Fluted filter paper is used for

Filtering the hot saturated solution

To dissolve large amount of substance at its boiling point

To avoid premature crystallization of the solute

Increasing the rate of filtration

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

Octahedron

Cube

Tetrahedron

Triangle

90. The most efficient solvent extraction method is by using

Single extraction and small portion of solvent

Repeated extraction and small portion of solvent

Repeated extraction and large portion of solvent

Single extraction and large portion of solvent

91. 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

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

1 : 3

2 : 1

1 : 1

1 : 2

93. Which of the following has least mass?

1 mole of S

3 x 10²³ atoms of C

7.0 g of Ag.

2 gram atom of nitrogen

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

None

Same

Double

Half

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

159 g/m³

159 mm Hg.

159 g/Cm²

159 torr

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

Triclimic

Mexagonal

Trigonal

Monoclimic

97. 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

4 x 6.02 x 10²³

3/2 x 6.02 x 10²³

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

4400

1524

3200

4800

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

Sulphuric acid

Acetic acid

Acetone

Chloroform

100. Van der Waal’s forces exist in

All types of atoms and molecules

Polar compounds

Covalent

Non-polar

Page 5 of 6

101. 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

9.333 atm

9.74 atm

10.33 atm

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

546 °C

200 °C

546 K

0 K

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

A gas is liberated

Colour of the gas is greenish yellow

Oxide of the gas is strongly acidic

The gas is chlorine

104. Which forms metallic crystals?

NH₄Cl

NaCl

SO₂

105. Amorphous substance posses

All of these

No definite geometry

No definite heat of fusion

No sharp melting points

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

8 and 4

4 and 4

6 and 6

6 and 4

107. Ionic solids are characterized by

Solubility in polar solvents

Low melting points

High vapour pressures

Good conductivity in solid state

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

Molecules are in chaotic motion

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

Molecules of all the gases have same size and same mass

All molecular collisions are elastic

109. Poor conductors of electricity is a characteristic of

Covalent compounds

Ionic compounds

Diatic bonds

Metallic compounds

110. Which is trigonal crystal?

NaNO₃

All

CaSO₄.2H₂O

MgSO₄

111. 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

112. 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

4 atm

3 atm

1 atm

113. Repeatable entity of a crystal structure is known as

Crystal

Miller indices

Unit cell

Lattice

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

Electrostatic force

Non covalent bond force

Covalent bond

Electrical attraction

115. ‘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

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

Both diffused at the same time

CO₂ is 1.25 times faster than CO

CO is 3.75 times faster than CO₂

CO is 1.25 times faster than CO₂

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

Polymorphism

Amorphism

Isomorphism

None of these

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

Having wide spaces

Causing pressure

Orderly arranged

Randomly moving

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

Charles’ law

Dalton’s law

Avogadro’s law

Boyle’s law

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

6 moles of S

5.0 moles of SO₂

20 moles of S8

44.8 dm3 CO₂ at S.T.P

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

AgBr

CuBr

CsBr

NH₄Br

122. Correct order of intermolecular forces

Liquid < gas < solid

Gas < liquid < solid

Gas = liquid = solid

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

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

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

Gases do not have a definite shape and volume

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

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

Sugar

Graphite

Kcl

Plastic

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

Ammonia

Ethanol

Water

Ether

Page 6 of 6

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

2.016

22.4

20.16

2.24

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

There is no orderly arrangement of particles

They melt over a range of temperature

They are anisotropic

There are rigid and in-compressible

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

3.5 moles

1.5 moles

3 moles

10 moles

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

Charles’ law

Boyle’s law

Graham’s law

Dalton’s law

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

Both A & B

Normal filter paper

None

Fluted filter paper

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

Na(s) → N²⁺ (g) + e¯

Na(s) → N²⁺ (g) + 2e¯

Na(g) → N²⁺ (g) + e¯

Na(g) → N²⁺ (g) + +¯

132. Crystals can be classified into

3 crystal systems

14 crystal systems

4 crystal systems

7 crystal systems

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

Zinc

Copper

Sodium

Magneisum

134. Which of the following is isotropic

Brass

Borax

Mercury

Graphite

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

Ione pair of electrons

Anions

Cations

Free valence electrons

136. Ice is ________ crystal

Metallic

Ionic

Covalent

Molecular

137. Amorphous solids

Have sharp melting point

Have perfect arrangement of atoms

Undergo clean cleave when cut with knife

Can possess small regions of orderly arrangement of atoms

138. Which of the following is a pseudo solid?

CaF₂

All these

Glass

NaCl

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

Molecular solids

Pseudo solids

Covalent solids

Ionic solids

140. The mass of one mole of electron is

0.104 mg

1.008 mg

1.673 mg

0.55 mg

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

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

Square planner manner

Tetrahedral manner

Hexagonal manner

Altahydral manner

143. 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

Decrease twice

Remains unchanged

Increase two fold

Be a function of the molecular mass of substance

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

Mass

Charge

Number of isotopes

Relative abundance

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

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

None of these

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.

146. The allotropic forms of an element are called

Unit Cell

Cleavage

Allotropes

Isoelectronic

147. Isomorphic substance have

Same physical and difference chemical properties

Same physical and chemical properties

Different physical and same chemical properties

Different physical and chemical properties

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

Zero

3 liter atm

1 liter atm

2 liter atm

149. Half atmospheric pressure is

400 torr

50 662 Pa

101.325 Pa

8.5 Pounds

150. 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 erg³ K¯¹ mol¯¹

8.31 x 10⁷ dynes Cm K¯¹ mol¯¹

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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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May 21, 2022 at 12:22 pm

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irfan ali says:

May 21, 2022 at 12:21 pm

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Chemistry Solids MCQS Online Test

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