Q. In plants, which structure is primarily responsible for asexual reproduction? (2023)
  • A. Roots
  • B. Leaves
  • C. Stems
  • D. Flowers
Q. In plants, which structure is responsible for sexual reproduction? (2021)
  • A. Roots
  • B. Leaves
  • C. Flowers
  • D. Stems
Q. In the context of atomic structure, what does the term 'isotope' refer to? (2021)
  • A. Atoms with the same number of protons but different neutrons
  • B. Atoms with different numbers of protons
  • C. Atoms with the same mass number
  • D. Atoms that are chemically identical
Q. In the context of atomic structure, what does the term 'quantum leap' refer to? (2022)
  • A. Movement of electrons in a circular path
  • B. Transition of an electron between energy levels
  • C. Emission of light
  • D. Absorption of energy
Q. In the context of measurements, what does precision refer to? (2022)
  • A. Closeness to the true value
  • B. Consistency of repeated measurements
  • C. Range of values
  • D. Average of measurements
Q. In the context of surface chemistry, what does the term 'adsorption' refer to? (2022)
  • A. The process of a substance being taken up by a liquid
  • B. The process of a substance adhering to a surface
  • C. The process of a substance dissolving in a solvent
  • D. The process of a substance being absorbed into a solid
Q. In the context of surface chemistry, what does the term 'desorption' mean? (2023)
  • A. The process of adsorption
  • B. The release of adsorbed molecules from a surface
  • C. The absorption of a gas into a liquid
  • D. The formation of a solid from a gas
Q. In the context of surface chemistry, what does the term 'desorption' refer to? (2022)
  • A. The process of adsorption
  • B. The release of adsorbate from the surface
  • C. The formation of a new layer
  • D. The increase in surface area
Q. In the context of surface chemistry, what does the term 'surface area' refer to? (2020)
  • A. Total area of the solid
  • B. Area available for adsorption
  • C. Area of the bulk material
  • D. Area of the gas
Q. In the electrochemical cell, what occurs at the anode? (2022)
  • A. Reduction
  • B. Oxidation
  • C. Neutralization
  • D. Precipitation
Q. In the electrochemical cell, which electrode is the site of reduction? (2023)
  • A. Anode
  • B. Cathode
  • C. Salt bridge
  • D. Electrolyte
Q. In the electrochemical series, which element is the best reducing agent? (2022)
  • A. Li
  • B. Na
  • C. K
  • D. Rb
Q. In the electrochemical series, which element is the strongest oxidizing agent? (2023)
  • A. Li
  • B. F2
  • C. Na
  • D. K
Q. In the electrochemical series, which of the following has the highest reduction potential? (2022)
  • A. Li+
  • B. Na+
  • C. K+
  • D. F+
Q. In the hydrogen atom, which transition would emit the photon with the highest energy? (2019)
  • A. n=2 to n=1
  • B. n=3 to n=2
  • C. n=4 to n=3
  • D. n=5 to n=4
Q. In the kinetic theory of gases, the temperature of a gas is a measure of: (2022)
  • A. The average potential energy of the molecules
  • B. The average kinetic energy of the molecules
  • C. The total energy of the gas
  • D. The number of molecules in the gas
Q. In the kinetic theory of gases, the term 'elastic collision' means: (2019)
  • A. Kinetic energy is conserved
  • B. Momentum is conserved
  • C. Both kinetic energy and momentum are conserved
  • D. Neither kinetic energy nor momentum is conserved
Q. In the kinetic theory, the internal energy of an ideal gas is primarily due to:
  • A. Potential energy
  • B. Kinetic energy of molecules
  • C. Work done on the gas
  • D. Heat energy
Q. In the kinetic theory, the temperature of a gas is a measure of: (2022)
  • A. The average potential energy of the molecules
  • B. The average kinetic energy of the molecules
  • C. The total energy of the gas
  • D. The speed of the gas molecules
Q. In the Langmuir adsorption isotherm, which assumption is NOT made? (2019)
  • A. Adsorption occurs on a surface with a finite number of identical sites
  • B. Adsorption is reversible
  • C. There is no interaction between adsorbed molecules
  • D. Adsorption occurs only at high pressures
Q. In the photoelectric effect, what happens to the kinetic energy of emitted electrons as the frequency of incident light increases? (2021)
  • A. Increases
  • B. Decreases
  • C. Remains constant
  • D. Becomes zero
Q. In the photoelectric effect, what happens to the kinetic energy of emitted electrons when the frequency of incident light is increased? (2021)
  • A. Increases
  • B. Decreases
  • C. Remains constant
  • D. Becomes zero
Q. In the photoelectric effect, what happens when the frequency of incident light is increased? (2020)
  • A. More electrons are emitted
  • B. Electrons are emitted with higher energy
  • C. No electrons are emitted
  • D. The current decreases
Q. In the reaction 2Ag+ + Zn → 2Ag + Zn^2+, which element is oxidized? (2020)
  • A. Ag
  • B. Zn
  • C. O
  • D. None of the above
Q. In the reaction 2Ag⁺ + Zn → 2Ag + Zn²⁺, which species is reduced? (2023)
  • A. Ag⁺
  • B. Zn
  • C. Ag
  • D. Zn²⁺
Q. In the reaction 2Fe2O3 + 3C → 4Fe + 3CO2, which species is oxidized? (2019)
  • A. Fe2O3
  • B. C
  • C. Fe
  • D. CO2
Q. In the reaction 2Fe²⁺ + 2e⁻ → 2Fe, what is being reduced? (2021)
  • A. Fe²⁺
  • B. Fe
  • C. e⁻
  • D. None of the above
Q. In the reaction 2Fe²⁺ + 2MnO4⁻ → 2Fe³⁺ + 2Mn²⁺, what is the oxidation state change for iron? (2021)
  • A. +2 to +3
  • B. +3 to +2
  • C. 0 to +2
  • D. −2 to 0
Q. In the reaction 2Fe²⁺ + Cl2 → 2Fe³⁺ + 2Cl⁻, what is being oxidized? (2021)
  • A. Fe²⁺
  • B. Cl2
  • C. Fe³⁺
  • D. Cl⁻
Q. In the reaction 2MnO4- + 5C2O4^2- + 16H+ → 2Mn^2+ + 10CO2 + 8H2O, what is being oxidized? (2019)
  • A. MnO4-
  • B. C2O4^2-
  • C. H+
  • D. CO2
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