Mastering Physical States of Matter | 80+ MCQs for Exams and Entrance Tests Success
Chemistry is an essential subject that is widely studied across the globe. It helps to understand the fundamental principles of matter and the chemical reactions that govern our world. For students preparing for entrance exams such as BISE, Federal Board, NEET, MDCAT, ETEA, CSS, PMS, and others, having a strong foundation in the basics of Chemistry is crucial. This is where MCQs (Multiple Choice Questions) play a vital role in preparing for such exams.
In this blog post, we will cover the most important basic level Chemistry MCQs for entrance exams, specifically focusing on the topics of gases, their properties, Boyle's Law, Charles's Law, liquids and their properties, and solids and their types. We have compiled a list of 80+ MCQs that cover the essential concepts in these topics, which will help students to reinforce their knowledge and boost their confidence when it comes to facing these exams.
Whether you're a high school student preparing for your board exams, a college student getting ready for your entrance test, or an aspirant looking to crack the CSS or PMS exams, this blog post will provide you with the necessary tools to succeed. So, let's dive in and explore these MCQs to strengthen our understanding of the basics of Chemistry.
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| Chemistry MCQs on the Physical State of Matter From the MCQs Library of H.E.S (Health, Education, and Skills) |
MCQs on basic terms and definitions
1. What is the matter?A. Anything that has mass but no volume
B. Anything that occupies space and has mass
C. Anything that has volume but no mass
D. Anything that is transparent and has no color
2. What is a solid?
A. A state of matter that has a fixed shape and volume
B. A state of matter that has a fixed shape but no volume
C. A state of matter that has no shape and no volume
D. A state of matter that has no shape but a fixed volume
3. What is a liquid?
A. A state of matter that has a fixed shape and volume
B. A state of matter that has a fixed shape but no volume
C. A state of matter that has no shape and no volume
D. A state of matter that has no shape but a fixed volume
4. What is gas?
A. A state of matter that has a fixed shape and volume
B. A state of matter that has a fixed shape but no volume
C. A state of matter that has no shape and no volume
D. A state of matter that has no shape but an indefinite volume
5. What makes solids hard?
A. The intermolecular forces of attraction in solids are weaker than in liquids and gases
B. The intermolecular forces of attraction in solids are the same as in liquids and gases
C. The intermolecular forces of attraction in solids are stronger than in liquids and gases
D. None
6. What is the difference between a liquid and a gas?
A. Liquids have a fixed shape and volume, while gases have an indefinite shape and volume
B. Liquids have a fixed shape but no fixed volume, while gases have an indefinite shape and volume
C. Liquids have an indefinite shape and volume, while gases have a fixed shape and volume
D. Liquids and gases are in the same states of matter
7. What are intermolecular attractive forces?
A. The forces of attraction between atoms within a molecule
B. The forces of attraction between molecules of a substance
C. The forces of attraction between two different substances
D. The forces of repulsion between molecules of a substance
8. Which of the following physical properties depends on the strength of intermolecular attractive forces?
A. Chemical reactivity
B. Atomic mass
C. Melting point
D. Atomic number
9. Why are solids hard?
A. Because intermolecular attractive forces in solid molecules are weak
B. Because intermolecular attractive forces in solid molecules are moderate
C. Because intermolecular attractive forces in solid molecules are strong
D. Because intermolecular attractive forces in solid molecules do not exist
10. Which of the following has the strongest intermolecular attractive forces?
A. Solid
B. Liquid
C. Gas
D. They are all the same
11. What happens to the boiling point of a substance as the strength of intermolecular attractive forces increases?
A. It increases
B. It decreases
C. It remains the same
D. It depends on the substance
12. Which of the following has the highest vapor pressure?
A. Solid
B. Liquid
C. Gas
D. They all have the same vapor pressure
13. Which of the following is a physical property that can be used to determine the strength of intermolecular attractive forces?
A. Color
B. Chemical reactivity
C. Density
D. Atomic radius
MCQs on typical properties of Gases
14. Which of the following properties are typical of gases?
A) Definite volume and shape
B) Definite volume and indefinite shape
C) Indefinite volume and definite shape
D) Indefinite volume and shape
15. What is the pressure exerted by gases due to?
A) Their fixed volume
B) Their fixed shape
C) Their collisions with each other and the walls of the container
D) Their density
16. What is the normal atmospheric pressure?
A) 760 mm of Hg
B) 760 cm of Hg
C) 760 m of Hg
D) 760 km of Hg
17. Which property of gases allows them to be compressed?
A) Density
B) Mobility
C) Expansion
D) Indefinite shape
18. What is diffusion?
A) The escaping of gas molecules one by one from a container
B) The spontaneous mixing of the molecules of one gas with another at a given temperature and pressure
C) The increase in pressure with an increase in temperature
D) The decrease in pressure with a decrease in temperature
19. Which property of gases is inversely proportional to their volume?
A) Density
B) Mobility
C) Expansion
D) Pressure
20. What is the relationship between the mass of a gas and its diffusion?
A) The greater the mass of the gas, the greater its diffusion
B) The greater the mass of the gas, the lesser its diffusion
C) There is no relationship between the mass of a gas and its diffusion
D) The mass of a gas does not affect its diffusion
21. What is the relationship between the pressure of gases and temperature?
A) The pressure of gases decreases with an increase in temperature
B) The pressure of gases increases with a decrease in temperature
C) The pressure of gases increases with an increase in temperature
D) There is no relationship between the pressure of gases and temperature
22. What is the relationship between the density of gases and their volume?
A) The density of gases is directly proportional to their volume
B) The density of gases is inversely proportional to their volume
C) The density of gases is directly proportional to their mass
D) The density of gases is inversely proportional to their mass
23. What is diffusion?
A. The movement of gaseous molecules from a region of lower concentration to a region of higher concentration.
B. The movement of gaseous molecules from a region of higher concentration to a region of lower concentration.
C. The movement of liquid molecules from a region of higher concentration to a region of lower concentration.
D. The movement of solid molecules from a region of lower concentration to a region of higher concentration.
24. What is effusion?
A. The movement of gaseous molecules from a region of lower concentration to a region of higher concentration.
B. The movement of gaseous molecules from a region of higher concentration to a region of lower concentration.
C. The movement of liquid molecules from a region of higher concentration to a region of lower concentration.
D. The movement of solid molecules from a region of lower concentration to a region of higher concentration through a small hole of molecular size.
25. In what state(s) of matter can diffusion take place?
A. Solids only
B. Liquids only
C. Gases only
D. Solids, liquids, and gases
26. In what state(s) of matter can effusion take place?
A. Solids only
B. Liquids only
C. Gases only
D. Solids, liquids, and gases
27. Which of the following is an example of diffusion?
A. Puncturing of a tire, escaping of gas out of a balloon without bursting.
B. The spreading of rose smell in the area nearby the garden.
C. The movement of ink molecules from a region of lower concentration to a region of higher concentration in water.
D. The movement of sound waves through a medium.
MCQs on typical properties of solids
28. Solids are rigid because
A) They have weak intermolecular forces
B) They have strong intermolecular forces
C) They have low density
D) They have low melting points
29. Which state of matter has the highest density?
A) Gas
B) Liquid
C) Solid
D) They all have the same density
30. What is the melting point of a solid?
A) The temperature at which it boils
B) The temperature at which it turns into a gas
C) The temperature at which it changes into a liquid
D) The temperature at which it becomes rigid
31. What does the purity of crystalline solids indicate?
A) The density of the solid
B) The melting point of the solid
C) The ability of the solid to conduct electricity
D) The color of the solid
32. Which type of solid has a regular pattern of particles to form three-dimensional shapes?
A) Crystalline solids
B) Amorphous solids
C) Liquid solids
D) Gas solids
33. What is the characteristic property of pure crystalline solids?
A) Irregular pattern of molecules
B) High rigidity
C) Sharp melting points
D) Low density
34. Which type of solid does not have a regular pattern of particles?
A) Crystalline solids
B) Amorphous solids
C) Liquid solids
D) Gas solids
35. Which of the following is an example of a crystalline solid?
A) Glass
B) Waxes
C) Sodium chloride
D) Rubber
36. What is the melting point of amorphous solids?
A) Sharp and well-defined
B) Varies depending on the composition
C) Lower than the melting point of crystalline solids
D) Higher than the melting point of crystalline solids
37. Which type of solid has a higher degree of randomness in its arrangement of particles?
A) Crystalline solids
B) Amorphous solids
C) Both have the same degree of randomness
D) Neither has any randomness in their arrangement
MCQs on Boyle's and Charles's Law
38. According to Boyle's law, what happens to the volume of a gas if its pressure is increased while keeping its temperature constant?
A) The volume increases
B) The volume remains constant
C) The volume decreases
D) The volume becomes zero
39. What is the mathematical form of Boyle's law?
A) P = K x V
B) P = K / V
C) V = K x P
D) V = K / P
40. If the initial pressure of a gas is 2 atm and the initial volume is 5 L, what will be the final volume if the pressure is decreased to 1 atm at a constant temperature, according to Boyle's law?
A) 2.5 L
B) 5 L
C) 10 L
D) 20 L
41. If the volume of a gas is halved while keeping its temperature constant, what will happen to its pressure according to Boyle's law?
A) The pressure doubles
B) The pressure halves
C) The pressure remains constant
D) The pressure becomes zero
42. What is the constant of proportionality in Boyle's law?
A) Pressure
B) Volume
C) Temperature
D) None of the above
43. If the pressure of a gas is increased from 1 atm to 4 atm while keeping its volume constant, what will happen to its temperature according to Boyle's law?
A) The temperature increases
B) The temperature decreases
C) The temperature remains constant
D) The temperature becomes zero
44. According to Boyle's law, if the pressure of a gas is halved while keeping its volume constant, what will happen to its density?
A) The density doubles
B) The density halves
C) The density remains constant
D) The density becomes zero
45. If the volume of a gas is tripled while keeping its pressure constant, what will happen to its temperature according to Boyle's law?
A) The temperature increases
B) The temperature decreases
C) The temperature remains constant
D) The temperature becomes zero
46. What is the equation representing Boyle's law?
A) P1V1 = P2V2
B) P1V1 = nRT
C) PV = nRT
D) PV = K
47. What is Boyle's law?
A. The volume of a gas is directly proportional to its pressure at a constant temperature.
B. The volume of a gas is inversely proportional to its pressure at a constant temperature.
C. The pressure of a gas is directly proportional to its temperature at constant volume.
D. The pressure of a gas is inversely proportional to its temperature at constant volume.
48. According to Boyle's law, what is the mathematical relationship between pressure and volume at constant temperature?
A. P ∝ V
B. P ∝ T
C. P ∝ 1/V
D. P ∝ 1/T
49. According to Boyle's law, what happens to the volume of a gas when its pressure is increased at a constant temperature?
A. The volume increases.
B. The volume decreases.
C. The volume remains constant.
D. The volume becomes zero.
50. What is Charles's law?
A) The volume of a gas is directly proportional to its pressure at a constant temperature.
B) The pressure of a gas is directly proportional to its temperature at constant volume.
C) The volume of a gas is directly proportional to its temperature at constant pressure.
D) The pressure of a gas is directly proportional to its volume at a constant temperature.
51. According to Charles's law, if the temperature of a gas is increased at constant pressure, what happens to its volume?
A) It increases
B) It decreases
C) It remains constant
D) It becomes zero
52. What is the mathematical form of Charles's law?
A) V ∝ T
B) P ∝ T
C) V ∝ P
D) P ∝ V
53. If the initial volume of a gas is 5 L at a temperature of 300 K, what will be its final volume if the temperature is increased to 400 K at constant pressure?
A) 4 L
B) 5 L
C) 6 L
D) 7 L
54. According to Charles's law, if the temperature of a gas is decreased at constant pressure, what happens to its volume?
A) It increases
B) It decreases
C) It remains constant
D) It becomes zero
55. If the volume of a gas is 10 L at a temperature of 20°C, what will be its volume at 100°C, assuming constant pressure?
A) 10 L
B) 20 L
C) 30 L
D) 40 L
56. If the temperature of a gas is increased from 273 K to 373 K at constant pressure, what will be the ratio of its final volume to its initial volume?
A) 1:1
B) 2:1
C) 3:1
D) 4:1
57. If the volume of a gas is 5 L at a temperature of 20°C, what will be its volume at 40°C, assuming constant pressure?
A) 5.2 L
B) 5.5 L
C) 6 L
D) 6.5 L
MCQs on typical properties of liquids
58. What happens to the kinetic energy of liquids with increasing temperature?
A. It decreases
B. It remains constant
C. It increases
D. It fluctuates
59. What is the boiling point of a liquid?
A. The temperature at which the liquid becomes a gas
B. The temperature at which the vapour pressure of the liquid becomes equal to atmospheric pressure
C. The temperature at which the liquid freezes
D. The temperature at which the liquid evaporates
60. What is the relationship between temperature and vapour pressure of liquids?
A. They are independent of each other
B. They are directly proportional to each other
C. They are inversely proportional to each other
D. They are non-linearly related to each other
61. What is the effect of increasing temperature on the boiling point of a liquid?
A. It increases
B. It decreases
C. It remains constant
D. It fluctuates
62. What is the effect of decreasing pressure on the boiling point of a liquid?
A. It increases
B. It decreases
C. It remains constant
D. It fluctuates
63. What is the effect of decreasing the temperature on the melting point of a liquid?
A. It increases
B. It decreases
C. It remains constant
D. It fluctuates
64. Which of the following is not a phase change of matter?
A. Evaporation
B. Condensation
C. Sublimation
D. Solidification
65. At what temperature do most liquids boil at standard atmospheric pressure?
A.. 0°C
B. 100°C
C. 473 K
D. 373 K
66. Which of the following is true about the boiling point of water?
A. It increases with increasing pressure
B. It decreases with increasing pressure
C. It remains constant with increasing pressure
D. It fluctuates with increasing pressure
67. Which of the following is an example of sublimation?
A. Ice melting to form water
B. Water boiling to form steam
C. Dry ice (solid CO2)
D. Gasoline evaporating
68. What is the effect of adding solutes to a liquid on its boiling point?
A. It increases
B. It decreases
C. It remains constant
D. It fluctuates
69. What is the effect of increasing temperature on the viscosity of liquids?
A. It increases
B. It decreases
C. It remains constant
D. It fluctuates
MCQs on Allotropy and Allotropic forms of Carbon
70. What is allotropy?
A. The existence of an element in more than one crystalline form
B. The existence of an element in more than one liquid form
C. The existence of an element in more than one gaseous form
D. The existence of an element in more than one solid form
71. What are the different forms of Sulphur called?
A. Rhombic Sulphur and Monoclinic Sulphur
B. Cubic Sulphur and Tetragonal Sulphur
C. Amorphous Sulphur and Crystalline Sulphur
D. Orthorhombic Sulphur and Triclinic Sulphur
72. What is the temperature at which two allotropic forms of Sulphur are in equilibrium?
A. 50.5°C
B. 75.5°C
C. 95.5°C
D. 120.5°C
73. Which form of Carbon exists in three allotropic forms?
A. Non-crystalline form
B. Amorphous form
C. Crystalline form
D. Both A and B
74. Which form of Carbon is amorphous?
A. Diamond
B. Graphite
C. Coal
D. Buckyballs
75. What is the other name for Buckyballs?
A. Fullerenes
B. Nanotubes
C. Nanosheets
D. Nanowires
76. Which form of Carbon is used in pencil leads?
A. Diamond
B. Graphite
C. Buckyballs
D. Coal
77. How many covalent bonds does each Carbon atom have in a diamond?
A. One
B. Two
C. Three
D. Four
78. What is the shape of the arrangement of Carbon atoms in a diamond?
A. Hexagonal
B. Square
C. Octagonal
D. Cubic
79. Why are diamonds bad conductors of electricity?
A. Due to weak covalent bonds
B. Due to strong attractive forces
C. Due to the tightness of bonds
D. Due to the shape of the arrangement of Carbon atoms
80. In what arrangement are Carbon atoms arranged in graphite?
A. Tetrahedral
B. Hexagonal
C. Cubic
D. Octagonal
81. What property of graphite makes it a good conductor of electricity?
A. Strong attractive forces
B. Weak covalent bonds
C. Shape of the Carbon atoms
D. Density
82. What is the shape of the arrangement of Carbon atoms in Buckyballs?
A. Tetrahedral
B. Hexagonal
C. Cubic
D. Cage-like structures
83. When were Buckyballs discovered?
A. 1980
B. 1985
C. 1990
D. 1995
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