Chemistry

Q. What is the relationship between Gibbs free energy (ΔG) and cell potential (E) in electrochemistry?
  • A. ΔG = -nFE
  • B. ΔG = nFE
  • C. ΔG = -E/nF
  • D. ΔG = E/nF
Q. What is the relationship between the rate of reaction and temperature according to the Arrhenius equation? (2022)
  • A. Inversely proportional
  • B. Directly proportional
  • C. Exponential
  • D. Linear
Q. What is the shape of a molecule with a tetrahedral geometry? (2023)
  • A. Linear
  • B. Trigonal planar
  • C. Tetrahedral
  • D. Octahedral
Q. What is the shape of the methane (CH4) molecule? (2023)
  • A. Linear
  • B. Trigonal planar
  • C. Tetrahedral
  • D. Octahedral
Q. What is the shape of the s orbital? (2021) 2021
  • A. Spherical
  • B. Dumbbell
  • C. Double dumbbell
  • D. Linear
Q. What is the simplest ketone?
  • A. Acetaldehyde
  • B. Acetone
  • C. Butanone
  • D. Propionaldehyde
Q. What is the specific heat at constant volume (Cv) for a monatomic ideal gas? (2019)
  • A. 3R/2
  • B. 5R/2
  • C. R
  • D. 2R
Q. What is the specific heat capacity of water at constant pressure (C_p)? (2020)
  • A. 4.18 J/g°C
  • B. 2.09 J/g°C
  • C. 1.00 J/g°C
  • D. 3.00 J/g°C
Q. What is the specific heat capacity of water? (2021) 2021
  • A. 1 J/g°C
  • B. 4.18 J/g°C
  • C. 2 J/g°C
  • D. 0.9 J/g°C
Q. What is the standard electrode potential of the half-reaction Zn²⁺ + 2e⁻ → Zn?
  • A. 0.76 V
  • B. 0.34 V
  • C. -0.76 V
  • D. -0.34 V
Q. What is the standard electrode potential of the hydrogen electrode? (2023) 2023
  • A. 0 V
  • B. 1 V
  • C. 2 V
  • D. 0.5 V
Q. What is the structure of a nucleotide?
  • A. Sugar, phosphate, and base
  • B. Amino group, carboxyl group, and side chain
  • C. Glycerol and fatty acids
  • D. Monosaccharides
Q. What is the symbol for Gold?
  • A. Au
  • B. Ag
  • C. Pb
  • D. Fe
Q. What is the term for a solution that contains the maximum amount of solute that can dissolve at a given temperature? (2022)
  • A. Unsaturated solution
  • B. Saturated solution
  • C. Supersaturated solution
  • D. Concentrated solution
Q. What is the term for the energy required to change a substance from solid to liquid?
  • A. Heat of fusion
  • B. Heat of vaporization
  • C. Sublimation energy
  • D. Latent heat
Q. What is the term for the energy required to separate an adsorbate from an adsorbent? (2023)
  • A. Adsorption energy
  • B. Desorption energy
  • C. Activation energy
  • D. Bond energy
Q. What is the term for the maximum amount of solute that can be adsorbed on a surface? (2021)
  • A. Saturation point
  • B. Adsorption capacity
  • C. Equilibrium constant
  • D. Surface tension
Q. What is the term for the process where a solid adsorbs a liquid or gas? (2022)
  • A. Absorption
  • B. Adsorption
  • C. Desorption
  • D. Sorption
Q. What is the total number of moles in 2 liters of a 3 M solution? (2022)
  • A. 3 moles
  • B. 6 moles
  • C. 1.5 moles
  • D. 4 moles
Q. What is the unit of electrical conductivity? (2023)
  • A. Ohm
  • B. Siemens
  • C. Volt
  • D. Ampere
Q. What is the unit of the rate constant for a first-order reaction? (2023)
  • A. M/s
  • B. M²/s
  • C. s⁻¹
  • D. M⁻¹s⁻¹
Q. What is the valency of Magnesium? (2015)
  • A. 1
  • B. 2
  • C. 3
  • D. 0
Q. What is the valency of Oxygen? (2021)
  • A. 1
  • B. 2
  • C. 3
  • D. 4
Q. What is the value of the azimuthal quantum number (l) for a d orbital? (2021) 2021
  • A. 0
  • B. 1
  • C. 2
  • D. 3
Q. What is the value of the azimuthal quantum number (l) for a p-orbital? (2015)
  • A. 0
  • B. 1
  • C. 2
  • D. 3
Q. What is the volume of 0.2 M NaOH required to neutralize 0.1 M HCl in 250 mL? (2020)
  • A. 125 mL
  • B. 250 mL
  • C. 500 mL
  • D. 100 mL
Q. What is the volume of 1 M HCl solution needed to obtain 0.5 moles of HCl? (2022)
  • A. 0.5 L
  • B. 1 L
  • C. 2 L
  • D. 0.25 L
Q. What is the volume of 1 mole of an ideal gas at STP? (2019) 2019
  • A. 22.4 L
  • B. 24 L
  • C. 1 L
  • D. 10 L
Q. What is the volume of a 2 M NaOH solution needed to obtain 4 moles of NaOH? (2021) 2021
  • A. 2 L
  • B. 1 L
  • C. 0.5 L
  • D. 4 L
Q. What is the work done by an ideal gas during an isothermal expansion from volume V1 to V2 at temperature T? (2021)
  • A. nRT ln(V2/V1)
  • B. nRT (V2 - V1)
  • C. PV
  • D. 0
Showing 331 to 360 of 559 (19 Pages)
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