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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. 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

Increase two fold

Be a function of the molecular mass of substance

Remains unchanged

Decrease twice

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

8.0

7.0

3.0

3. Under what conditions real gases deviate from ideal behavior

High temperature

Low temperature

Both b and c

High pressure

4. The crystal structure having face centered cubic arrangement is

CuCl

CsCl

BaCl₂

NaCl

5. 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 changed by about 26%

Change by 33%

Is unchanged

Is halved

6. ‘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?

200

150

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

H₂O

NH₃

BH₃

CH₄

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

11.2 liters

1 liter

22.4 liters

2.24 liters

9. 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

11 g

22 g

33 g

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

None of these

Bcc

Fcc

Both fcc and bcc

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

NH₃ and H⁺

NH₃ and BF₃

H₂O and H⁺

CH₄ and AlCl₃

12. Isomorphic substance have

Different physical and chemical properties

Same physical and chemical properties

Same physical and difference chemical properties

Different physical and same chemical properties

13. Which of the following is a pseudo solid?

NaCl

CaF₂

All these

Glass

14. Half atmospheric pressure is

101.325 Pa

400 torr

50 662 Pa

8.5 Pounds

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

6 moles of S

5.0 moles of SO₂

44.8 dm3 CO₂ at S.T.P

20 moles of S8

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

Number of isotopes

Mass

Charge

Relative abundance

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

200 °C

546 K

546 °C

0 K

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

15 tm, and 500 K

15 atm, and 200 K

0.5 atm, and 500 K

1 atm, and 273 K

19. The most efficient solvent extraction method is by using

Repeated extraction and large portion of solvent

Repeated extraction and small portion of solvent

Single extraction and small portion of solvent

Single extraction and large portion of solvent

20. Ice is ________ crystal

Ionic

Molecular

Metallic

Covalent

21. Solvents of covalent compounds include all but

Petrol

Water

Tetra chloromethane

Alcohol

22. In case of elements the polymorphism is called

Crystalline forms

Isomorphism

Isotopic form

Allotropy

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

Increase in potential energy of molecules

Increase of intermolecular interactions

Decrease of surface tension

Increase of K.E of molecules

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

2.24

20.16

2.016

22.4

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

Page 2 of 6

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

2.0478 x 10 ²⁴

4.0956 x 10 ²⁴

1.5057 x 10 ²⁴

3.0115 x 10 ²⁴

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

Trigonal

Tetragonal

Rhombic

Monoclinic

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

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

Gases do not have a definite shape and volume

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

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

29. Amorphous substance posses

All of these

No sharp melting points

No definite heat of fusion

No definite geometry

30. 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

Two

Three

Four

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

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

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

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

None

Crystal

Cleavage

Unit

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

Sulphuric acid

Acetone

Chloroform

Acetic acid

34. Correct order of intermolecular forces

Gas < liquid < solid

Liquid < gas < solid

Gas = liquid = solid

Gas < liquid < solid

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

None of these

P/√d

P/d

√P/d

36. 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

3/2 x 6.02 x 10²³

4 x 6.02 x 10²³

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

Tetrahedron

Triangle

Octahedron

Cube

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

This gives medium size crystals

This gives bigger size crystals

Filtrate runs down without crystals

The filtrate is quick

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

1 : 3

1 : 2

2 : 1

1 : 1

40. Which is distilled first?

Liquid H₂

Liquid O₂

Liquid CO₂

Liquid N₂

41. Van der Waal’s forces exist in

Covalent

Polar compounds

All types of atoms and molecules

Non-polar

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

Ione pair of electrons

Cations

Anions

Free valence electrons

43. 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

44. 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

45. Particles that most effects material properties

Valence electrons

Neutrons

Protons

Electrons

46. Isomorphic substances have

Different physical and same chemical properties

Same physical and different chemical properties

Different physical and chemical properties

Same physical and chemical properties

47. Simple molecules or giant macromolecules are examples of

Diatic bond

Metallic bonds

Covalent bonds

Ionic compounds

48. Fluted filter paper is used for

To dissolve large amount of substance at its boiling point

To avoid premature crystallization of the solute

Filtering the hot saturated solution

Increasing the rate of filtration

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

C₃H₅O₂

C₄H₁₀O₂

C₃H₁₀O₂

C₆H₁₀O₄

50. 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 evaporates more readily than C

A and B evaporates at the same rate

B evaporates less readily than C

B evaporates more readily than A

Page 3 of 6

51. Which of the following has least mass?

2 gram atom of nitrogen

7.0 g of Ag.

1 mole of S

3 x 10²³ atoms of C

52. The mass of one mole of electron is

0.104 mg

1.673 mg

0.55 mg

1.008 mg

53. The molar volume of CO₂ is maximum at

127°C and 1 atm

273°C and 2 atm

0°C and 2 atm

S.T.P (0°C and 1 atm)

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

CrO₂

NO₂

TiO₂

MnO₂

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

√π/2

2/π

π/2

2/√π

56. 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 cool

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

He will feel warmth

His blood pressure will increase

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

4800

1524

4400

3200

58. 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

59. 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

558.5 x 6.022 x 10²³

6.022 x 10²²

Half that in 8 g of He

60. Amorphous substances possess

Sharp B.P.

Definite heat of fusion

No definite heat of fusion

Sharp melting points

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

Polymorphism

Anisotropy

Allotropy

Isomorphism

62. 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

63. 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

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

Non-polar nature of gases

Elastic collisions of gas molecules

Different molar mass

Pressure of dust particles in air

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

Graham’s law

Boyle’s law

Dalton’s law

Charles’ law

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

0.32 g

0.96 g

0.64 g

0.16 g

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

68. Which solids are called true solids?

Vitreous

Metallic

Amorphous

Crystalline

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

Tetravalent

Pentavalent impurity

Divalent impurity

Trivalent impurity

70. Which of the following are more temperature sensitive?

Ionic crystals

Liquid crystals

Solid crystals

None of these

71. Mean distance between atoms in the range of

25 nm

0.25 nm

0.025 nm

2.5 nm

72. Which forms metallic crystals?

NH₄Cl

SO₂

NaCl

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

They are anisotropic

There are rigid and in-compressible

They melt over a range of temperature

There is no orderly arrangement of particles

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

159 g/m³

159 mm Hg.

159 g/Cm²

159 torr

75. Amorphous solids

Can possess small regions of orderly arrangement of atoms

Have perfect arrangement of atoms

Have sharp melting point

Undergo clean cleave when cut with knife

Page 4 of 6

76. How many allotropic forms are present in carbon?

Three

Two

Four

Five

77. Crystalline solids can be identified easily by their

Sharp m.P

Definite geometry

Transition temperature

All of these

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

79. 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 CO₂ formed is 25 dm³

Volume of O₂ required is 50 dm³

Volume of O₂ required is 25 dm³

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

112 cm³

22.4 dm³

2.24 dm³

1.12 dm³

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

Gets a single negative charge

Gets a double positive charge

Gets a double negative charge

Gets a single positive charge

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

35.5g

71g

142g

18.75g

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

0.05 M

0.25 M

0.1 M

0.2 M

84. The material possessing superconducting properties is

Y B₂Cu₃O₇

Yb Ba₂Cu₂O₈

Y Ba₂Cu₃O₇

Hg Be₂Ca₂Cu₂O₈

85. 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

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

Half

None

Double

Same

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

Graphite

Plastic

Kcl

Sugar

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

6 and 4

8 and 4

4 and 4

6 and 6

89. Formation of a cation is?

Oxidation

Redox

None

Reduction

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

Normal filter paper

Fluted filter paper

Both A & B

None

91. Glass is a

Gel

Super-cooled liquid

Micro-crystalline solid

None of these

92. 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.

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

Ionic solids

Pseudo solids

Molecular solids

Covalent solids

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

Hexagonal manner

Square planner manner

Altahydral manner

Tetrahedral manner

95. A malleable solid is one which can be

Converted into sheets

All of these

Melted easily

Converted into wires

96. Bragg’s law is given by equation

nλ = 2 θ sin θ

nλ = 1/2d sin θ

nλ = 2 d sin θ

2nλ = d sin θ

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

Vaporization

Sublimation

Filtration

Condensation

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

Agl

HgS

Cul

Csl

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

None of these

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

Triclimic

Monoclimic

Mexagonal

Trigonal

Page 5 of 6

101. 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

2 atm

4 atm

3 atm

102. Crystals can be classified into

14 crystal systems

3 crystal systems

7 crystal systems

4 crystal systems

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

Avogadro’s law

Charles’ law

Boyle’s law

Dalton’s law

104. The allotropic forms of an element are called

Allotropes

Unit Cell

Isoelectronic

Cleavage

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

Solvent extraction

Chromatography

All

Crystallization

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

Na(g) → N²⁺ (g) + +¯

Na(g) → N²⁺ (g) + e¯

Na(s) → N²⁺ (g) + e¯

Na(s) → N²⁺ (g) + 2e¯

107. The example of hexagonal system is

Sugar

Graphite

Sulphur

Diamond

108. Potassium crystallizes with a

Orthogonal lattice

Cubic lattice

Ortho rhombic lattice

Triclinic

109. Poor conductors of electricity is a characteristic of

Metallic compounds

Covalent compounds

Ionic compounds

Diatic bonds

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

Oxide of the gas is strongly acidic

Colour of the gas is greenish yellow

The gas is chlorine

A gas is liberated

111. Ionic solids are characterized by

Low melting points

Solubility in polar solvents

High vapour pressures

Good conductivity in solid state

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

Fast

Moderately

Slowly

None

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

5 mL of 0.1 M

10 mL of 0.1 M

10 mL of 0.02 M

10 mL of 0.5 M

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

All molecular collisions are elastic

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

Molecules are in chaotic motion

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

Polymorphism

Anisotropy

Isomorphism

Allotropy

116. 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

XY₂

X₃Y

117. Solvent extraction is mostly applied to separate

Inorganic compounds

Organic compounds

None of these

Both A and B

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

Zinc

Sodium

Magneisum

Copper

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

High concentration

Low temperature

High solubility

High ignition temperature

120. 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

Little bit greater than the molar volumes of liquid

Little bit less than the molar volumes of solids

Much larger than the molar volumes of liquids and solids

About the same as the molar volumes of liquids

121. A solid may be made up of

Molecules

Ions

Atoms

A, B and C

122. Super conductors are derived from compounds of

Lanthanides

Transition elements

Actinides

p-block elements

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

Isomorphism

None of these

Polymorphism

Amorphism

124. Triple point of water is

373 K

273 K

203 K

193 K

125. 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

Page 6 of 6

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

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

NaCl type structure

AB₂ type ionic compound

ZnS type structure

CsCl type structure

128. 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

Liquid Crystals

Isomorphous crystals

129. 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

1 liter atm

2 liter atm

3 liter atm

130. 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

Causing pressure

Having wide spaces

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

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

8.31 JK¯¹ mol¯¹

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

Water

Ammonia

Ethanol

Ether

133. Which of the following is isotropic

Graphite

Mercury

Brass

Borax

134. 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

135. Crystalline solids can be identified easily from their

Colour

Sharp melting point

Transition temperature

Definite geometry

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

Monoclinic

Isotropical

Rhombohedral

Triclinic

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

3 moles

10 moles

3.5 moles

1.5 moles

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

NH₄Br

CuBr

CsBr

AgBr

139. 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 gas molecules move in one direction only

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

At high pressure, the intermolecular attraction becomes significant

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

700 mm of Hg

790 mm of Hg

1489 mm of Hg

100 mm of Hg

141. Which of the following substances is not amorphous?

Polymer

Rubber

Glass

Ag NO₃

142. 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

Add water to the mixture and filter

Place the mixture in a separating funnel

Heat the mixture and allow it to cool

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

1.4 x 10¯²¹ g

1.3 x 10¯²⁰ g

5.01 x 10¯²¹ g

3.72 x 10¯²³ g

144. Which is trigonal crystal?

All

MgSO₄

CaSO₄.2H₂O

NaNO₃

145. Repeatable entity of a crystal structure is known as

Lattice

Miller indices

Crystal

Unit cell

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

Electrical attraction

Non covalent bond force

Covalent bond

Electrostatic force

147. 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 solid chromatography

Ascending paper chromatography

Liquid gas chromatography

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

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

The coordination number of carbon atoms is 4

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

0°C and 2.0 atm

-10°C and 5.0 atm

100°C and 2.0 atm

-10°C and 2.0 atm

150. 4.4 g of CO₂ contains how many liters of CO₂ at STP?

2.4 liter

44 liter

22.4 liter

2.24 liter

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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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MDCAT Chemistry Liquids and Solids Test Online

Chemistry Solids MCQS Online Test

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Chemistry Solids MCQS Online Test

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