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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. Solvents of covalent compounds include all but

Tetra chloromethane

Alcohol

Petrol

Water

2. Super conductors are derived from compounds of

Transition elements

Actinides

p-block elements

Lanthanides

3. Which of the following are more temperature sensitive?

Liquid crystals

None of these

Ionic crystals

Solid crystals

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

None of these

√P/d

P/d

P/√d

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

1 liter atm

3 liter atm

2 liter atm

Zero

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

Non covalent bond force

Electrical attraction

Electrostatic force

Covalent bond

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

1.12 dm³

22.4 dm³

112 cm³

2.24 dm³

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

Increase of K.E of molecules

Decrease of surface tension

Increase of intermolecular interactions

Increase in potential energy of molecules

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

Anions

Cations

Ione pair of electrons

Free valence electrons

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

3 moles

3.5 moles

1.5 moles

10 moles

11. Repeatable entity of a crystal structure is known as

Miller indices

Lattice

Crystal

Unit cell

12. 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

0.2 M

0.25 M

0.05 M

13. Amorphous solids

Have perfect arrangement of atoms

Undergo clean cleave when cut with knife

Can possess small regions of orderly arrangement of atoms

Have sharp melting point

14. How many allotropic forms are present in carbon?

Five

Three

Four

Two

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

Polymorphism

Isomorphism

Allotropy

Anisotropy

16. Simple molecules or giant macromolecules are examples of

Ionic compounds

Metallic bonds

Covalent bonds

Diatic bond

17. The crystal structure having face centered cubic arrangement is

BaCl₂

CsCl

CuCl

NaCl

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

Number of isotopes

Relative abundance

Charge

Mass

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

Moderately

None

Slowly

Fast

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

C₃H₅O₂

C₄H₁₀O₂

C₆H₁₀O₄

C₃H₁₀O₂

21. In case of elements the polymorphism is called

Isotopic form

Allotropy

Crystalline forms

Isomorphism

22. 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

H₂

N₂

23. 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%

Is unchanged

Change by 33%

24. Which solids are called true solids?

Amorphous

Metallic

Vitreous

Crystalline

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

2.0478 x 10 ²⁴

1.5057 x 10 ²⁴

4.0956 x 10 ²⁴

3.0115 x 10 ²⁴

Page 2 of 6

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

CrO₂

NO₂

MnO₂

TiO₂

27. Isotopes differ in

Properties which depend upon mass

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

Chemical properties

Arrangement of electrons in orbitals

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

One mole of NH₃ will produce ½ mole of N₂

One mole of NH₃ will produce 6 moles of N₂

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

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

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

Ether

Ammonia

Ethanol

Water

31. Which is trigonal crystal?

NaNO₃

CaSO₄.2H₂O

All

MgSO₄

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

Gets a double positive charge

Gets a double negative charge

Gets a single positive charge

Gets a single negative charge

33. Which of the following is a pseudo solid?

NaCl

All these

CaF₂

Glass

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

Dalton’s law

Charles’ law

Boyle’s law

Graham’s law

35. 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

36. Formation of a cation is?

Reduction

Redox

Oxidation

None

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

790 mm of Hg

1489 mm of Hg

700 mm of Hg

100 mm of Hg

38. A solid may be made up of

A, B and C

Ions

Molecules

Atoms

39. 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

2.24 liters

22.4 liters

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

41. 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

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

None

Both A & B

Normal filter paper

Fluted filter paper

43. The mass of one mole of electron is

1.673 mg

0.55 mg

0.104 mg

1.008 mg

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

Molecular solids

Ionic solids

Pseudo solids

Covalent solids

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

√π/2

π/2

2/√π

2/π

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

1.4 x 10¯²¹ g

5.01 x 10¯²¹ g

1.3 x 10¯²⁰ g

3.72 x 10¯²³ g

47. Amorphous substance posses

No definite heat of fusion

No definite geometry

No sharp melting points

All of these

48. 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

He will feel warmth

He will feel cool

His blood pressure will increase

49. Poor conductors of electricity is a characteristic of

Metallic compounds

Covalent compounds

Diatic bonds

Ionic compounds

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

Isotropical

Rhombohedral

Triclinic

Monoclinic

Page 3 of 6

51. Glass is a

Gel

None of these

Super-cooled liquid

Micro-crystalline solid

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

Hexagonal manner

Square planner manner

Altahydral manner

Tetrahedral manner

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

4 and 4

6 and 6

6 and 4

8 and 4

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

Vaporization

Condensation

Sublimation

Filtration

55. 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

56. Potassium crystallizes with a

Triclinic

Ortho rhombic lattice

Cubic lattice

Orthogonal lattice

57. Which of the following has least mass?

7.0 g of Ag.

2 gram atom of nitrogen

3 x 10²³ atoms of C

1 mole of S

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

Trigonal

Triclimic

Monoclimic

Mexagonal

59. 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

60. The material possessing superconducting properties is

Yb Ba₂Cu₂O₈

Y B₂Cu₃O₇

Y Ba₂Cu₃O₇

Hg Be₂Ca₂Cu₂O₈

61. The example of hexagonal system is

Sulphur

Diamond

Graphite

Sugar

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

CO₂ is 1.25 times faster than CO

CO is 1.25 times faster than CO₂

Both diffused at the same time

CO is 3.75 times faster than CO₂

63. 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

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

Gases do not have a definite shape and volume

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

HgS

Agl

Csl

Cul

65. The molar volume of CO₂ is maximum at

S.T.P (0°C and 1 atm)

127°C and 1 atm

0°C and 2 atm

273°C and 2 atm

66. Half atmospheric pressure is

8.5 Pounds

400 torr

50 662 Pa

101.325 Pa

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

Crystallization

Chromatography

Solvent extraction

All

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

Monoclinic

Trigonal

Tetragonal

Rhombic

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

1 : 1

1 : 2

2 : 1

1 : 3

70. Under what conditions real gases deviate from ideal behavior

High temperature

Low temperature

High pressure

Both b and c

71. 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

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

Decreased covalent and hydrogen bond forces

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

Triangle

Octahedron

Tetrahedron

Cube

73. Triple point of water is

373 K

203 K

273 K

193 K

74. 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

A evaporates more readily than C

B evaporates less readily than C

75. Particles that most effects material properties

Electrons

Protons

Valence electrons

Neutrons

Page 4 of 6

76. 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

77. Amorphous substances possess

Sharp melting points

Definite heat of fusion

Sharp B.P.

No definite heat of fusion

78. A malleable solid is one which can be

Converted into sheets

All of these

Converted into wires

Melted easily

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

NaCl type structure

CsCl type structure

AB₂ type ionic compound

ZnS type structure

80. 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

5 mL of 0.1 M

10 mL of 0.02 M

10 mL of 0.1 M

81. Van der Waal’s forces exist in

Covalent

All types of atoms and molecules

Non-polar

Polar compounds

82. 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)

9.74 atm

9.333 atm

9.2 atm

10.33 atm

83. 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

Remains unchanged

Be a function of the molecular mass of substance

Decrease twice

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

0.16 g

0.64 g

0.96 g

0.32 g

85. Ionic solids are characterized by

High vapour pressures

Low melting points

Good conductivity in solid state

Solubility in polar solvents

86. ‘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

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

0.5 atm, and 500 K

15 tm, and 500 K

15 atm, and 200 K

1 atm, and 273 K

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

None of these

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

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

89. Which forms metallic crystals?

NH₄Cl

NaCl

SO₂

90. 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

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

AgBr

CuBr

CsBr

NH₄Br

92. 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

3 atm

1 atm

4 atm

2 atm

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

None of these

Isomorphism

Amorphism

Polymorphism

94. 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

95. Isomorphic substances have

Same physical and different chemical properties

Different physical and chemical properties

Same physical and chemical properties

Different physical and same chemical properties

96. Bragg’s law is given by equation

nλ = 2 d sin θ

nλ = 2 θ sin θ

2nλ = d sin θ

nλ = 1/2d sin θ

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

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

159 mm Hg.

159 torr

159 g/m³

159 g/Cm²

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

71g

35.5g

18.75g

142g

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

NH₃ and BF₃

CH₄ and AlCl₃

NH₃ and H⁺

H₂O and H⁺

Page 5 of 6

101. Solvent extraction is mostly applied to separate

Both A and B

Organic compounds

None of these

Inorganic compounds

102. 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

103. Isomorphic substance have

Same physical and chemical properties

Different physical and same chemical properties

Different physical and chemical properties

Same physical and difference chemical properties

104. 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

XY₂

XT₃

X₃Y

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

A gas is liberated

Oxide of the gas is strongly acidic

The gas is chlorine

Colour of the gas is greenish yellow

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

Chloroform

Sulphuric acid

Acetic acid

Acetone

107. 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

108. 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 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

109. Which of the following substances is not amorphous?

Polymer

Rubber

Glass

Ag NO₃

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

Boyle’s law

Charles’ law

Dalton’s law

Avogadro’s law

111. Ice is ________ crystal

Metallic

Ionic

Covalent

Molecular

112. Mean distance between atoms in the range of

0.25 nm

2.5 nm

25 nm

0.025 nm

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

Elastic collisions of gas molecules

Non-polar nature of gases

Pressure of dust particles in air

Different molar mass

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

Allotropy

Anisotropy

Isomorphism

Polymorphism

115. Which of the following is isotropic

Borax

Brass

Mercury

Graphite

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

None of these

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

Zinc

Copper

Sodium

Magneisum

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

The filtrate is quick

This gives bigger size crystals

This gives medium size crystals

Filtrate runs down without crystals

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

Kcl

Plastic

Graphite

Sugar

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

None

Unit

Cleavage

Crystal

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

Ascending paper chromatography

Descending paper chromatography

Liquid gas chromatography

Liquid solid chromatography

122. 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

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

4 x 6.02 x 10²³

2 x 6.02 x 10²³

3/2 x 6.02 x 10²³

6.02 x 10²³

124. 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 coordination number of carbon atoms is 4

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

125. 4.4 g of CO₂ contains how many liters of CO₂ at STP?

2.24 liter

2.4 liter

44 liter

22.4 liter

Page 6 of 6

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

0 K

546 °C

200 °C

546 K

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

Fcc

None of these

Both fcc and bcc

Bcc

128. 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

129. 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

5.5 g

22 g

11 g

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

Same

Half

Double

None

131. Crystalline solids can be identified easily by their

All of these

Sharp m.P

Transition temperature

Definite geometry

132. 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

Isomorphous crystals

Liquid Crystals

Allotropic crystal

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

8.0

7.0

3.0

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

Pentavalent impurity

Divalent impurity

Trivalent impurity

Tetravalent

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

4400

3200

1524

4800

136. Crystalline solids can be identified easily from their

Sharp melting point

Definite geometry

Transition temperature

Colour

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

O and F

C and F

Na and F

N and F

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

BH₃

CH₄

NH₃

H₂O

139. Crystals can be classified into

14 crystal systems

4 crystal systems

3 crystal systems

7 crystal systems

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

2.24

2.016

20.16

22.4

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

High concentration

High ignition temperature

High solubility

Low temperature

142. Correct order of intermolecular forces

Gas < liquid < solid

Gas = liquid = solid

Liquid < gas < solid

143. 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

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

Na(g) → N²⁺ (g) + +¯

Na(s) → N²⁺ (g) + 2e¯

Na(g) → N²⁺ (g) + e¯

Na(s) → N²⁺ (g) + e¯

145. Which is distilled first?

Liquid H₂

Liquid CO₂

Liquid N₂

Liquid O₂

146. The most efficient solvent extraction method is by using

Repeated extraction and small portion of solvent

Repeated extraction and large portion of solvent

Single extraction and small portion of solvent

Single extraction and large portion of solvent

147. The allotropic forms of an element are called

Isoelectronic

Unit Cell

Cleavage

Allotropes

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

149. 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 25 dm³

Volume of CO₂ formed is 60 dm³

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

Place the mixture in a separating funnel

Add dilute acid to the mixture and filter

Heat the mixture and allow it to cool

Add water to the mixture and filter

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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

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Chemistry Solids MCQS Online Test

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