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TG EAMCET (EAPCET) Chemistry Multiple Choice Questions (MCQs)

TG EAMCET Chemistry MCQs - Unit-14 & Unit-15

61. Which of the following is a characteristic of crystalline solids?

A) They have a definite geometric pattern
B) They have an irregular structure
C) They do not exhibit long-range order
D) Their atoms are randomly arranged

Answer: A) They have a definite geometric pattern

62. In X-ray crystallography, what is used to probe the structure of solids?

A) Neutrons
B) Electrons
C) X-rays
D) Gamma rays

Answer: C) X-rays

63. Which of the following is a type of unit cell that has atoms at the corners and center?

A) Primitive unit cell
B) Body-centered unit cell
C) Face-centered unit cell
D) Hexagonal unit cell

Answer: B) Body-centered unit cell

64. What is the packing efficiency of a simple cubic unit cell?

A) 52.4%
B) 74%
C) 100%
D) 33.2%

Answer: A) 52.4%

65. Which type of solid is held together by covalent bonds?

A) Molecular solids
B) Ionic solids
C) Metallic solids
D) Covalent network solids

Answer: D) Covalent network solids

66. Which property of solids is explained by the band theory of metals?

A) Electrical conductivity
B) Density
C) Melting point
D) Molar mass

Answer: A) Electrical conductivity

67. According to Raoult’s law, the vapor pressure of a solution is directly proportional to:

A) The solubility of the solute
B) The volume of the solution
C) The mole fraction of the solvent
D) The temperature of the solution

Answer: C) The mole fraction of the solvent

68. Which of the following statements is true for colligative properties?

A) They depend on the nature of the solute
B) They depend on the amount of solute particles
C) They depend on the temperature of the solution
D) They are independent of the solute concentration

Answer: B) They depend on the amount of solute particles

69. Which of the following solutions follows Henry’s Law?

A) A solid in a liquid
B) A gas in a liquid
C) A gas in a solid
D) A liquid in a liquid

Answer: B) A gas in a liquid

70. What is the main cause of abnormal molar masses in solutions?

A) High solubility of the solute
B) The presence of electrolytes
C) The temperature of the solution
D) Non-ideal solution behavior

Answer: B) The presence of electrolytes

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