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 2Fe²⁺ + Cl2 → 2Fe³⁺ + 2Cl⁻, which element is oxidized? (2021)
  • A. Fe
  • B. Cl
  • C. O
  • D. None
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
Q. In the reaction 2MnO4⁻ + 5C2O4²⁻ + 16H⁺ → 2Mn²⁺ + 10CO2 + 8H2O, which species is reduced? (2019)
  • A. MnO4⁻
  • B. C2O4²⁻
  • C. H⁺
  • D. CO2
Q. In the reaction CO(g) + 2H2(g) ⇌ CH3OH(g), if H2 is removed from the system, what will happen to the equilibrium? (2022)
  • A. Shift to the right
  • B. Shift to the left
  • C. No change
  • D. Increase in temperature
Q. In the reaction CO(g) + 2H2(g) ⇌ CH3OH(g), what is the effect of increasing the concentration of CO? (2023)
  • A. Shift to the right
  • B. Shift to the left
  • C. No change
  • D. Increase in Kp
Q. In the reaction Zn + Cu²⁺ → Zn²⁺ + Cu, which element is oxidized? (2022)
  • A. Zn
  • B. Cu²⁺
  • C. Zn²⁺
  • D. Cu
Q. In thermodynamics, the term 'enthalpy' is defined as: (2022)
  • A. The total energy of a system
  • B. The heat content of a system at constant pressure
  • C. The work done by a system
  • D. The change in internal energy
Q. In thermodynamics, the term 'system' refers to: (2022)
  • A. The surroundings
  • B. The part of the universe under study
  • C. The entire universe
  • D. None of the above
Q. In thermodynamics, what does the term 'enthalpy' (H) represent? (2020)
  • A. Total energy of the system
  • B. Energy required to break bonds
  • C. Heat content of the system at constant pressure
  • D. Work done by the system
Q. In thin film interference, which of the following will not affect the interference pattern? (2022)
  • A. Thickness of the film
  • B. Wavelength of light
  • C. Angle of incidence
  • D. Color of the light source
Q. In which case does total internal reflection occur? (2022)
  • A. When light travels from a denser to a rarer medium
  • B. When light travels from a rarer to a denser medium
  • C. At the critical angle
  • D. None of the above
Q. In which direction does the magnetic field point inside a solenoid carrying current? (2023)
  • A. From south to north
  • B. From north to south
  • C. Perpendicular to the axis
  • D. It is zero
Q. In which group of plants do we find true roots, stems, and leaves? (2021)
  • A. Bryophytes
  • B. Pteridophytes
  • C. Algae
  • D. Fungi
Q. In which group of plants do you find the presence of true leaves, stems, and roots? (2020)
  • A. Bryophytes
  • B. Pteridophytes
  • C. Gymnosperms
  • D. Algae
Q. In which group of plants do you find the presence of xylem and phloem? (2020)
  • A. Algae
  • B. Mosses
  • C. Ferns
  • D. All of the above
Q. In which group of plants do you find true roots, stems, and leaves? (2020)
  • A. Bryophytes
  • B. Pteridophytes
  • C. Gymnosperms
  • D. All of the above
Q. In which kingdom would you classify mushrooms? (2022)
  • A. Animalia
  • B. Plantae
  • C. Fungi
  • D. Protista
Q. In which of the following conditions does the entropy of a system increase? (2022)
  • A. When a gas is compressed
  • B. When a solid melts
  • C. When a liquid freezes
  • D. When a gas is cooled
Q. In which of the following does external fertilization occur? (2019)
  • A. Frogs
  • B. Humans
  • C. Birds
  • D. Reptiles
Q. In which of the following organisms does binary fission occur? (2019)
  • A. Yeast
  • B. Amoeba
  • C. Hydra
  • D. Starfish
Q. In which of the following organisms does external fertilization occur? (2021)
  • A. Frog
  • B. Human
  • C. Dog
  • D. Cat
Q. In which of the following organisms does external fertilization typically occur? (2019)
  • A. Humans
  • B. Frogs
  • C. Birds
  • D. Reptiles
Q. In which of the following processes is the enthalpy change (ΔH) equal to the heat absorbed at constant pressure? (2019)
  • A. Isothermal process
  • B. Isochoric process
  • C. Isobaric process
  • D. Adiabatic process
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