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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. ‘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

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

159 mm Hg.

159 g/Cm²

159 g/m³

159 torr

3. Bragg’s law is given by equation

2nλ = d sin θ

nλ = 2 θ sin θ

nλ = 2 d sin θ

nλ = 1/2d sin θ

4. Half atmospheric pressure is

400 torr

101.325 Pa

8.5 Pounds

50 662 Pa

5. The material possessing superconducting properties is

Y B₂Cu₃O₇

Yb Ba₂Cu₂O₈

Y Ba₂Cu₃O₇

Hg Be₂Ca₂Cu₂O₈

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

Heat the mixture and allow it to cool

Place the mixture in a separating funnel

Add dilute acid to the mixture and filter

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

8 and 4

6 and 6

4 and 4

6 and 4

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

3.0

8.0

7.0

9. 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

10. 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

22 g

33 g

11 g

11. Isomorphic substance have

Same physical and chemical properties

Different physical and chemical properties

Same physical and difference chemical properties

Different physical and same chemical properties

12. 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 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

13. Solvents of covalent compounds include all but

Tetra chloromethane

Petrol

Water

Alcohol

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

Charles’ law

Graham’s law

Boyle’s law

Dalton’s law

15. A malleable solid is one which can be

Melted easily

All of these

Converted into wires

Converted into sheets

16. Which forms metallic crystals?

NaCl

SO₂

NH₄Cl

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

Agl

Csl

Cul

HgS

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

H₂

O₂

N₂

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

1.12 dm³

22.4 dm³

2.24 dm³

112 cm³

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

Triclimic

Monoclimic

Mexagonal

Trigonal

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

22. 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

2.0478 x 10 ²⁴

1.5057 x 10 ²⁴

23. How many allotropic forms are present in carbon?

Five

Two

Three

Four

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

Molecules of all the gases have same size and same mass

Molecules are in chaotic motion

All molecular collisions are elastic

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

25. Which is trigonal crystal?

MgSO₄

All

CaSO₄.2H₂O

NaNO₃

Page 2 of 6

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

8.31 x 10⁷ dynes Cm K¯¹ mol¯¹

8.31 x 10⁷ erg³ K¯¹ mol¯¹

8.31 L atm K¯¹ mol¯¹

8.31 JK¯¹ mol¯¹

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

Octahedron

Tetrahedron

Cube

Triangle

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

Ionic solids

Pseudo solids

Covalent solids

Molecular solids

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

None

Unit

Cleavage

Crystal

30. Isomorphic substances have

Different physical and chemical properties

Same physical and chemical properties

Same physical and different chemical properties

Different physical and same chemical properties

31. 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

Half that in 8 g of He

6.022 x 10²²

32. Which of the following is a pseudo solid?

Glass

NaCl

All these

CaF₂

33. Poor conductors of electricity is a characteristic of

Metallic compounds

Diatic bonds

Covalent compounds

Ionic compounds

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

Electrostatic force

Non covalent bond force

Electrical attraction

Covalent bond

35. 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

A gas is liberated

The gas is chlorine

36. Amorphous substance posses

No definite heat of fusion

No definite geometry

No sharp melting points

All of these

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

Allotropy

Polymorphism

Isomorphism

Anisotropy

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

Na(s) → N²⁺ (g) + 2e¯

Na(g) → N²⁺ (g) + e¯

Na(g) → N²⁺ (g) + +¯

Na(s) → N²⁺ (g) + e¯

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

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

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

A high pressure, the volume of the gas becomes insignificant

At high pressure, the intermolecular attraction becomes significant

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

41. 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

22.4 liters

1 liter

2.24 liters

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

Change by 33%

Is unchanged

Is halved

Is changed by about 26%

43. Repeatable entity of a crystal structure is known as

Lattice

Crystal

Miller indices

Unit cell

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

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

2/π

√π/2

2/√π

π/2

46. The molar volume of CO₂ is maximum at

0°C and 2 atm

S.T.P (0°C and 1 atm)

273°C and 2 atm

127°C and 1 atm

47. Glass is a

Super-cooled liquid

Micro-crystalline solid

None of these

Gel

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

P/√d

None of these

P/d

√P/d

49. Potassium crystallizes with a

Ortho rhombic lattice

Orthogonal lattice

Cubic lattice

Triclinic

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

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

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

Gases do not have a definite shape and volume

Page 3 of 6

51. 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

B evaporates less readily than C

A and B evaporates at the same rate

A evaporates more readily than C

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

Relative abundance

Mass

Number of isotopes

Charge

53. Which of the following substances is not amorphous?

Glass

Polymer

Rubber

Ag NO₃

54. Correct order of intermolecular forces

Gas < liquid < solid

Liquid < gas < solid

Gas < liquid < solid

Gas = liquid = solid

55. 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

56. 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

Decrease twice

Be a function of the molecular mass of substance

57. The most efficient solvent extraction method is by using

Repeated extraction and small portion of solvent

Single extraction and large portion of solvent

Repeated extraction and large portion of solvent

Single extraction and small portion of solvent

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

Gets a double positive charge

Gets a single negative charge

Gets a single positive charge

Gets a double negative charge

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

CH₄

H₂O

NH₃

BH₃

60. The example of hexagonal system is

Sulphur

Sugar

Diamond

Graphite

61. Fluted filter paper is used for

To dissolve large amount of substance at its boiling point

Filtering the hot saturated solution

To avoid premature crystallization of the solute

Increasing the rate of filtration

62. 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

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

0.96 g

0.32 g

0.16 g

0.64 g

64. Crystals can be classified into

3 crystal systems

14 crystal systems

7 crystal systems

4 crystal systems

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

1524

3200

4400

4800

66. 4.4 g of CO₂ contains how many liters of CO₂ at STP?

2.4 liter

2.24 liter

22.4 liter

44 liter

67. Simple molecules or giant macromolecules are examples of

Diatic bond

Metallic bonds

Ionic compounds

Covalent bonds

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

Causing pressure

Having wide spaces

Randomly moving

Orderly arranged

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

None of these

70. 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

0.05 M

0.1 M

71. 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

72. 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

Isomorphous crystals

Isomeric crystals

Liquid Crystals

Allotropic crystal

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

Increase of K.E of molecules

Increase in potential energy of molecules

Increase of intermolecular interactions

Decrease of surface tension

74. 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

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

0.5 atm, and 500 K

15 atm, and 200 K

1 atm, and 273 K

15 tm, and 500 K

Page 4 of 6

76. 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

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

Boyle’s law

Avogadro’s law

Charles’ law

Dalton’s law

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

Sodium

Copper

Zinc

Magneisum

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

Anions

Cations

Ione pair of electrons

Free valence electrons

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

Tetrahedral manner

Hexagonal manner

Square planner manner

Altahydral manner

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

82. Under what conditions real gases deviate from ideal behavior

Low temperature

High pressure

Both b and c

High temperature

83. 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

84. 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 less than the molar volumes of solids

Much larger than the molar volumes of liquids and solids

Little bit greater than the molar volumes of liquid

About the same as the molar volumes of liquids

85. 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 layers in graphite are attracted to each other by weak forces

The carbon atoms are arranged layers

The coordination number of carbon atoms is 4

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

High ignition temperature

Low temperature

High concentration

High solubility

87. 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

1 atm

4 atm

3 atm

88. Which of the following has least mass?

7.0 g of Ag.

1 mole of S

3 x 10²³ atoms of C

2 gram atom of nitrogen

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

Double

None

Half

Same

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

Tetragonal

Monoclinic

Rhombic

Trigonal

91. A solid may be made up of

Molecules

Ions

Atoms

A, B and C

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

20 moles of S8

5.0 moles of SO₂

44.8 dm3 CO₂ at S.T.P

6 moles of S

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

3 liter atm

1 liter atm

2 liter atm

Zero

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

100 mm of Hg

790 mm of Hg

1489 mm of Hg

700 mm of Hg

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

546 K

0 K

546 °C

200 °C

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

Normal filter paper

None

Fluted filter paper

Both A & B

97. Crystalline solids can be identified easily by their

Sharp m.P

Transition temperature

Definite geometry

All of these

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

Trivalent impurity

Pentavalent impurity

Divalent impurity

Tetravalent

99. 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 25 dm³

Volume of O₂ required is 50 dm³

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

1.3 x 10¯²⁰ g

1.4 x 10¯²¹ g

5.01 x 10¯²¹ g

3.72 x 10¯²³ g

Page 5 of 6

101. Ionic solids are characterized by

Low melting points

Good conductivity in solid state

Solubility in polar solvents

High vapour pressures

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

Anisotropy

Isomorphism

Polymorphism

Allotropy

103. Van der Waal’s forces exist in

Non-polar

All types of atoms and molecules

Polar compounds

Covalent

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

Chloroform

Sulphuric acid

Acetic acid

Acetone

105. 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

106. Which is distilled first?

Liquid H₂

Liquid CO₂

Liquid O₂

Liquid N₂

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

All

Crystallization

Chromatography

Solvent extraction

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

-10°C and 2.0 atm

100°C and 2.0 atm

0°C and 2.0 atm

-10°C and 5.0 atm

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

Isotropical

Monoclinic

Triclinic

Rhombohedral

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

He will feel warmth

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

He will feel cool

His blood pressure will increase

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

None of these

Fcc

Both fcc and bcc

Bcc

112. Amorphous solids

Undergo clean cleave when cut with knife

Have sharp melting point

Can possess small regions of orderly arrangement of atoms

Have perfect arrangement of atoms

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

CsCl type structure

AB₂ type ionic compound

ZnS type structure

NaCl type structure

114. The allotropic forms of an element are called

Allotropes

Unit Cell

Isoelectronic

Cleavage

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

NH₄Br

CuBr

AgBr

CsBr

116. Which of the following is isotropic

Graphite

Borax

Mercury

Brass

117. 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

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

Fast

Slowly

Moderately

None

119. Particles that most effects material properties

Electrons

Protons

Valence electrons

Neutrons

120. 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:

Three

Four

Five

Two

121. Isotopes differ in

Arrangement of electrons in orbitals

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

Chemical properties

Properties which depend upon mass

122. Solvent extraction is mostly applied to separate

Inorganic compounds

None of these

Organic compounds

Both A and B

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

Sublimation

Vaporization

Condensation

Filtration

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

Plastic

Kcl

Sugar

Graphite

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

This gives bigger size crystals

The filtrate is quick

This gives medium size crystals

Filtrate runs down without crystals

Page 6 of 6

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

Ammonia

Water

Ether

Ethanol

127. Super conductors are derived from compounds of

Transition elements

Lanthanides

Actinides

p-block elements

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

2 : 1

1 : 1

1 : 3

1 : 2

129. The mass of one mole of electron is

1.673 mg

0.55 mg

1.008 mg

0.104 mg

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

C and F

N and F

Na and F

O and F

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

CrO₂

MnO₂

TiO₂

NO₂

132. 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

133. Amorphous substances possess

Sharp melting points

Definite heat of fusion

Sharp B.P.

No definite heat of fusion

134. Formation of a cation is?

None

Redox

Oxidation

Reduction

135. Which of the following are more temperature sensitive?

Liquid crystals

Ionic crystals

Solid crystals

None of these

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

71g

35.5g

142g

18.75g

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

H₂O and H⁺

NH₃ and BF₃

CH₄ and AlCl₃

NH₃ and H⁺

138. Ice is ________ crystal

Covalent

Metallic

Molecular

Ionic

139. 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

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

Polymorphism

Isomorphism

None of these

Amorphism

141. Mean distance between atoms in the range of

0.25 nm

2.5 nm

25 nm

0.025 nm

142. Crystalline solids can be identified easily from their

Sharp melting point

Definite geometry

Colour

Transition temperature

143. Triple point of water is

273 K

203 K

193 K

373 K

144. 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.

145. In case of elements the polymorphism is called

Allotropy

Isotopic form

Isomorphism

Crystalline forms

146. 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

147. Which solids are called true solids?

Vitreous

Amorphous

Metallic

Crystalline

148. The crystal structure having face centered cubic arrangement is

BaCl₂

NaCl

CsCl

CuCl

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

22.4

2.24

2.016

20.16

150. 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 0.02 M

10 mL of 0.5 M

5 mL of 0.1 M

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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

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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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