Chemistry

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Q. What is the standard reduction potential of the half-reaction Cu2+ + 2e- → Cu? (2022)
  • A. +0.34 V
  • B. +0.76 V
  • C. -0.34 V
  • D. -0.76 V
Q. What is the standard reduction potential of the half-reaction Fe^3+ + 3e- → Fe? (2022)
  • A. +0.77 V
  • B. +0.44 V
  • C. -0.77 V
  • D. -0.44 V
Q. What is the standard temperature and pressure (STP) in Kelvin and atm? (2020)
  • A. 0 K and 1 atm
  • B. 273 K and 1 atm
  • C. 100 K and 1 atm
  • D. 273 K and 0 atm
Q. What is the term for the change of state from solid directly to gas? (2020)
  • A. Sublimation
  • B. Deposition
  • C. Evaporation
  • D. Condensation
Q. What is the term for the change of state from solid to gas without passing through the liquid state? (2020)
  • A. Sublimation
  • B. Deposition
  • C. Evaporation
  • D. Condensation
Q. What is the term for the maximum amount of adsorbate that can be adsorbed on a given mass of adsorbent? (2020)
  • A. Adsorption capacity
  • B. Saturation point
  • C. Equilibrium concentration
  • D. Adsorption isotherm
Q. What is the term for the maximum amount of adsorbate that can be adsorbed on a unit mass of adsorbent? (2020)
  • A. Adsorption capacity
  • B. Adsorption isotherm
  • C. Saturation point
  • D. Adsorption efficiency
Q. What is the term for the maximum amount of solute that can be adsorbed on a given mass of adsorbent? (2023)
  • A. Adsorption capacity
  • B. Saturation point
  • C. Equilibrium concentration
  • D. Adsorption isotherm
Q. What is the term used for the process of removing adsorbed molecules from a surface? (2020)
  • A. Desorption
  • B. Absorption
  • C. Sorption
  • D. Adsorption
Q. What is the trend in atomic radius as you move down the alkali metal group? (2022)
  • A. Increases
  • B. Decreases
  • C. Remains constant
  • D. Increases then decreases
Q. What is the trend in reactivity of alkali metals down the group? (2022)
  • A. Increases
  • B. Decreases
  • C. Remains constant
  • D. Varies irregularly
Q. What is the unit cell of a diamond structure? (2022)
  • A. Face-centered cubic
  • B. Body-centered cubic
  • C. Simple cubic
  • D. Hexagonal
Q. What is the unit cell of diamond? (2022)
  • A. Face-centered cubic
  • B. Body-centered cubic
  • C. Simple cubic
  • D. Hexagonal
Q. What is the unit of the gas constant R in the ideal gas law? (2023)
  • A. L·atm/(K·mol)
  • B. J/(K·mol)
  • C. L·K/(mol·s)
  • D. atm/(K·mol)
Q. What is the van 't Hoff factor (i) for a non-electrolyte solute? (2023)
  • A. 1
  • B. 2
  • C. 3
  • D. 0
Q. What is the van 't Hoff factor (i) for a solution of glucose (C6H12O6)? (2023)
  • A. 1
  • B. 2
  • C. 3
  • D. 4
Q. What is the van 't Hoff factor (i) for a strong electrolyte like Na2SO4 in solution? (2023)
  • A. 1
  • B. 2
  • C. 3
  • D. 4
Q. What is the vapor pressure of a solution containing 1 mole of solute in 10 moles of solvent, assuming ideal behavior? (2019)
  • A. 0.1 P0
  • B. 0.9 P0
  • C. 0.5 P0
  • D. 0.2 P0
Q. What is the vapor pressure of a solution containing 1 mole of solute in 9 moles of solvent, assuming ideal behavior? (2019)
  • A. 0.1 P0
  • B. 0.9 P0
  • C. 0.5 P0
  • D. 0.2 P0
Q. What is the vapor pressure of a solution containing 2 moles of solute and 3 moles of solvent, assuming ideal behavior? (2022)
  • A. 0.4 P0
  • B. 0.6 P0
  • C. 0.2 P0
  • D. 0.8 P0
Q. What is the vapor pressure of a solution containing 2 moles of solute and 4 moles of solvent compared to pure solvent? (2022)
  • A. 1/3
  • B. 1/2
  • C. 2/3
  • D. 1/4
Q. What is the vapor pressure of a solution containing 2 moles of solute and 4 moles of solvent, assuming ideal behavior? (2022)
  • A. 0.33 P0
  • B. 0.50 P0
  • C. 0.67 P0
  • D. 0.75 P0
Q. What type of adsorption is characterized by a low heat of adsorption, typically less than 40 kJ/mol? (2023)
  • A. Physisorption
  • B. Chemisorption
  • C. Multilayer adsorption
  • D. Surface reaction
Q. What type of amine is formed by the reaction of ammonia with an alkyl halide? (2019)
  • A. Tertiary amine
  • B. Primary amine
  • C. Secondary amine
  • D. Quaternary ammonium salt
Q. What type of amine is formed when ammonia reacts with an alkyl halide? (2022)
  • A. Primary amine
  • B. Secondary amine
  • C. Tertiary amine
  • D. Quaternary ammonium salt
Q. What type of biomolecule are enzymes? (2019)
  • A. Carbohydrates
  • B. Proteins
  • C. Lipids
  • D. Nucleic acids
Q. What type of biomolecule is DNA? (2022)
  • A. Protein
  • B. Carbohydrate
  • C. Lipid
  • D. Nucleic acid
Q. What type of bond is formed between two atoms that share electrons? (2022)
  • A. Ionic bond
  • B. Covalent bond
  • C. Metallic bond
  • D. Hydrogen bond
Q. What type of bond is present in alkynes? (2022)
  • A. Single bond
  • B. Double bond
  • C. Triple bond
  • D. Quadruple bond
Q. What type of bond is primarily found in alkenes? (2023)
  • A. Single bond
  • B. Double bond
  • C. Triple bond
  • D. Ionic bond
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