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

81. Which of the following is the primary difference between adsorption and absorption?

• A) Adsorption occurs at the surface, while absorption occurs throughout the material.
• B) Adsorption involves a chemical reaction, while absorption does not.
• C) Adsorption requires heat, while absorption requires cold.
• D) Adsorption is irreversible, while absorption is reversible.

Answer: A) Adsorption occurs at the surface, while absorption occurs throughout the material.

82. Physisorption is characterized by which of the following?

• A) High enthalpy of adsorption
• B) Reversible adsorption
• C) Chemical bond formation between adsorbate and adsorbent
• D) High temperature stability

Answer: B) Reversible adsorption

83. Which of the following is true for chemisorption?

• A) It is generally a physical process.
• B) It involves the formation of a chemical bond.
• C) It occurs at low temperatures.
• D) It is reversible at all conditions.

Answer: B) It involves the formation of a chemical bond.

84. The Freundlich adsorption isotherm is applicable for which of the following conditions?

• A) Adsorption of gases on solids at very high pressures
• B) Adsorption of gases on solids at low pressures
• C) Adsorption in solution phase
• D) Adsorption of liquids on solids

Answer: B) Adsorption of gases on solids at low pressures

85. Which of the following is a characteristic of a heterogeneous catalyst?

• A) It is in the same phase as the reactants.
• B) It remains unchanged after the reaction.
• C) It participates in the reaction and forms intermediate compounds.
• D) It does not increase the rate of the reaction.

Answer: B) It remains unchanged after the reaction.

86. Which of the following statements is true about shape-selective catalysis?

• A) It occurs in the presence of large molecules.
• B) It is exhibited by zeolites.
• C) It is a characteristic of homogeneous catalysis.
• D) It does not affect the reaction rate.

Answer: B) It is exhibited by zeolites.

87. In enzyme catalysis, the catalyst is:

• A) A large inorganic compound
• B) A non-biological compound
• C) A protein that accelerates biochemical reactions
• D) A substance that forms chemical bonds with the reactant

Answer: C) A protein that accelerates biochemical reactions

88. Which of the following is a property of colloidal solutions?

• A) They do not exhibit the Tyndall effect.
• B) They show Brownian movement.
• C) They can easily be filtered through paper filters.
• D) They have large-sized particles that settle out.

Answer: B) They show Brownian movement.

89. Which type of colloidal solution is formed by soaps in water?

• A) Lyophilic sol
• B) Lyophobic sol
• C) Emulsion
• D) Gel

Answer: C) Emulsion

90. Which of the following methods is used to purify a colloidal solution?

• A) Filtration
• B) Distillation
• C) Dialysis
• D) Condensation

Answer: C) Dialysis