CHAPTER 1: Matter: Classification of Matter

1 Matter is called that object —

2. Which of the following is not a substance?

3. Which of the following is a substance?

4. Which of the following is not a property found in matter?

5. In the physical classification of matter, which one is not included?

6.In how many main states is matter found?

7. What is the maximum number of states of matter?

8. Which of the following is not matter?

9. Consider the following statements:

1. Solids have a definite shape and definite volume.

2. Liquids have a definite volume but variable shape.

3. Gases have both variable shape and variable volume.

Which of the above statements is/are correct?

12 A sponge, which can be easily compressed, is which type of matter?

13. Between the particles of which substance is the intermolecular force the strongest?

14. Consider the following statements:

1. The intermolecular force between the particles of a solid is the greatest.

2. The intermolecular space between the particles of a gas is the greatest.

Which of the above statements is/are correct?

15. Why do gases have neither a definite shape nor a definite volume?

16. Which of the following is not correct?

18. The direct change of a solid into vapor is called —

17. The force that holds the particles of matter together is called —

20. The direct change of a gas into a solid is called —

19. Which of the following is not correctly matched?

21. Which substance is found in nature in all three states?

22. When a piece of solid ice is heated, it starts melting and the temperature —

23. The space occupied by a substance is called —

24. Consider the following statements:

1. The fourth state of matter is called the plasma state.

2. The fifth state of matter is called the Bose–Einstein condensate state.

Which of the above statements is/are correct?

25. … is one of the states of matter that is obtained by cooling a very low-density gas to an extremely low temperature.

26. The change of a solid directly into vapor on heating, and the change of vapor directly into solid on cooling, is called —

28. Unlike gases, solids cannot be compressed. Why?

27. Which of the following statements is incorrect?

29. Identify the correct statements from the following:

30. In which of the following is the intermolecular force the strongest?

31. Solids cannot be compressed because —

1. They have the strongest intermolecular forces.

2. The motion of their particles is restricted.

3. Their particles are well arranged.

Code:

33. Which of the following statements is/are false?

1. Equal volumes of all solids contain the same number of atoms.

2. Equal volumes of all solids contain the same number of molecules.

Code:

32. Which of the following is a pseudo-solid?

1. KCl

2. Rubber

3. Barium chloride hydrate

4. Solid coke left after the distillation of coal tar

Code:

34. Which of the following is an amorphous solid?

35. Some crystals produce an electric current when pressure is applied to them. This phenomenon is called —

36. Which of the following statements is correct?

37. Which of the following statements about gases is not correct?

38. Which of the following is not a sublimable substance?

39. In 2001, which scientist was awarded the Nobel Prize for achieving the fifth state of matter?

40. The concept of a “Super Atom” is related to which state of matter?

41. The state of the Sun and other stars is—

42. What is the reason for the origin of the plasma state in the Solar System?

42. What is the reason for the origin of the plasma state in the Solar System?

43. In a fluorescent tube and neon indicator bulb, which state of matter produces light?

44. A substance made up of only one kind of particles (atoms) is called —

45.When two or more elements combine in a fixed proportion, the substance formed is called —

46.Which of the following is a pure substance?

47.Metals and nonmetals are types of —

48.Which of the following is a compound?

49. Consider the following statements:

1. Water is a compound, not a mixture.

2. Air is a mixture, not a compound.

Which of the above statements is/are correct?

50.What is chalk (CaCO₃)?

51.In which state(s) are elements found?

52.Which of the following is an element?

53.Which of the following is a compound?

54.Which of the following is neither an element nor a compound?

55.Which of the following statements about compounds is not correct?

56. Coal is —

57. What are alloys like brass and bronze?

58. Which of the following is a chemical compound?

59. Water is a compound, not a mixture, because —

60. Gunpowder is —

61.Consider the following statements:

1. If a substance can be separated into its components by physical methods, it is a mixture.

2. If a substance cannot be separated into its components by physical methods, it is a compound.

Which of the above statements is/are correct?

63. Which of the following is a compound?

64. Which of the following is not a pure substance?

65. Which of the following is a pure substance?

67. Bleaching powder is —

69. The substance which burns in air to give water and carbon dioxide is called —

68. Match the following:

List-I (Substance) | List-II (Element)
A. Diamond | 1. Calcium
B. Marble | 2. Silicon
C. Sand | 3. Aluminium
D. Ruby | 4. Carbon

Code: A B C D

(a) 3 4 1 2
(b) 4 1 2 3
(c) 1 2 3 4
(d) 4 3 2 1

✅ Answer: (b) 4 1 2 3

Explanation:

• Diamond (A) is made of Carbon (4)
• Marble (B) contains Calcium (1)
• Sand (C) contains Silicon (2)
• Ruby (D) contains Aluminium (3)

70. Which of the following is a pure substance?

71. Which of the following statements about a compound is not correct?

72. When two or more pure substances are mixed in any proportion, it forms —

73. Which of the following is a pure element?

74. What is the basic substance of nature from which all materials are made?

75. Which of the following is a mixture of two elements?

76. Which of the following is not a homogeneous mixture?

77. What type of mixture is soda water?

78. "Every substance in the world is made up of extremely small particles." Who stated this first?

79. When a substance changes from solid to liquid and from liquid to gas, what change occurs in the sample?

80. Which of the following substances does not contain oxygen?

81. Which of the following is a non-metal?

82. Consider the following statements:

83. A mixture of sodium chloride and ammonium chloride can be separated by —

84. The method to separate two immiscible liquids is —

85. Which of the following processes is not suitable for purifying solid impurities?

86. The best method to separate the different colored components present in flower petals is —

87. Using chromatography, which of the following cannot be separated?

88. The principle involved in chromatography is —

89. To separate iron filings and sulfur from their mixture, which of the following liquids can be used?

90. Which of the following is used to separate insoluble very fine particles from a liquid?

91. By which method can the constituent gases of air be separated?

92. When a piece of solid ice is heated, it starts melting and the temperature —

93. The element found in the largest amount on the Earth's crust is —

94. To separate iron filings and sulfur from their mixture, which of the following liquids can be used?