Chemistry (School & UG)

Q. What is the effect of increasing the concentration of an acid on its pH?
  • A. pH increases
  • B. pH decreases
  • C. pH remains constant
  • D. pH fluctuates
Q. What is the effect of increasing the concentration of reactants on the rate of reaction for a zero-order reaction?
  • A. Rate increases
  • B. Rate decreases
  • C. Rate remains constant
  • D. Rate becomes negative
Q. What is the effect of increasing the electronegativity difference between two bonded atoms?
  • A. Increases bond length
  • B. Decreases bond strength
  • C. Increases ionic character
  • D. Decreases dipole moment
Q. What is the effect of increasing the electronegativity of an atom bonded to hydrogen?
  • A. Decreases bond strength
  • B. Increases bond strength
  • C. Decreases acidity
  • D. Increases acidity
Q. What is the effect of increasing the electronegativity of atoms in a molecule on its dipole moment?
  • A. Increases dipole moment
  • B. Decreases dipole moment
  • C. No effect
  • D. Reverses dipole moment
Q. What is the effect of increasing the number of alkyl groups on the basicity of amines?
  • A. Increases basicity
  • B. Decreases basicity
  • C. No effect
  • D. Depends on the solvent
Q. What is the effect of increasing the number of gas molecules in a container at constant volume?
  • A. Pressure decreases
  • B. Pressure increases
  • C. Temperature decreases
  • D. Volume increases
Q. What is the effect of increasing the number of moles of gas in a container at constant temperature and volume?
  • A. Pressure decreases
  • B. Pressure remains constant
  • C. Pressure increases
  • D. Temperature increases
Q. What is the effect of increasing the number of moles of gas in a container at constant volume and temperature?
  • A. Pressure decreases
  • B. Pressure increases
  • C. Volume increases
  • D. Temperature increases
Q. What is the effect of increasing the oxidation state of a transition metal on its ionic radius?
  • A. Increases
  • B. Decreases
  • C. Remains the same
  • D. Varies unpredictably
Q. What is the effect of increasing the oxidation state of a transition metal on its ability to act as a Lewis acid?
  • A. Increases
  • B. Decreases
  • C. No effect
  • D. Varies unpredictably
Q. What is the effect of increasing the path length in a UV-Vis spectrophotometer?
  • A. Decreases absorbance
  • B. Increases absorbance
  • C. No effect on absorbance
  • D. Increases wavelength
Q. What is the effect of increasing the pressure on the equilibrium of the reaction 2SO2(g) + O2(g) ⇌ 2SO3(g)?
  • A. Shifts to the left
  • B. Shifts to the right
  • C. No effect
  • D. Increases the rate of reaction
Q. What is the effect of increasing the surface area of a solid reactant on the reaction rate?
  • A. No effect on the rate
  • B. Decreases the rate
  • C. Increases the rate
  • D. Only affects gas-phase reactions
Q. What is the effect of increasing the temperature on the cell potential of an electrochemical cell?
  • A. Increases
  • B. Decreases
  • C. No effect
  • D. Depends on the reaction
Q. What is the effect of increasing the temperature on the rate of a chemical reaction?
  • A. Decreases the rate
  • B. Increases the rate
  • C. No effect
  • D. Depends on the reaction
Q. What is the effect of removing a product from a reaction at equilibrium?
  • A. Shifts equilibrium to the right
  • B. Shifts equilibrium to the left
  • C. No effect on equilibrium
  • D. Increases the rate of reaction
Q. What is the effect of temperature on physisorption?
  • A. Increases with temperature
  • B. Decreases with temperature
  • C. No effect
  • D. Depends on the adsorbate
Q. What is the effect of temperature on the rate constant of a reaction according to the Arrhenius equation?
  • A. Rate constant decreases with temperature
  • B. Rate constant increases with temperature
  • C. Rate constant is unaffected by temperature
  • D. Rate constant is only affected by activation energy
Q. What is the effect of temperature on the rate of a chemical reaction according to the Arrhenius equation?
  • A. Rate decreases exponentially with temperature
  • B. Rate increases linearly with temperature
  • C. Rate increases exponentially with temperature
  • D. Rate remains constant regardless of temperature
Q. What is the effect of temperature on the rate of a chemical reaction?
  • A. It decreases the rate
  • B. It has no effect
  • C. It increases the rate
  • D. It can either increase or decrease the rate
Q. What is the effect of temperature on titration results?
  • A. It has no effect
  • B. It can change the solubility of the analyte
  • C. It affects the volume of the titrant
  • D. It alters the pH of the solutions
Q. What is the effective nuclear charge (Z_eff) experienced by a 3p electron in phosphorus (atomic number 15)?
  • A. 3
  • B. 5
  • C. 7
  • D. 8
Q. What is the effective nuclear charge (Z_eff) for a 3s electron in sodium (Na)?
  • A. 1
  • B. 3
  • C. 11
  • D. 8
Q. What is the effective nuclear charge (Z_eff) for a 3s electron in sodium (Z=11)?
  • A. 1
  • B. 3
  • C. 8
  • D. 11
Q. What is the electron affinity of chlorine in kJ/mol?
  • A. -349 kJ/mol
  • B. -328 kJ/mol
  • C. -300 kJ/mol
  • D. -400 kJ/mol
Q. What is the electron configuration of a chlorine atom?
  • A. 1s2 2s2 2p6 3s2 3p5
  • B. 1s2 2s2 2p6 3s2 3p6
  • C. 1s2 2s2 2p6 3s2 3p4
  • D. 1s2 2s2 2p6 3s2 3p3
Q. What is the electron configuration of a neutral atom of sulfur (S)?
  • A. [Ne] 3s2 3p4
  • B. [He] 2s2 2p6 3s2 3p4
  • C. [Ar] 4s2 3d10 4p4
  • D. [Ne] 3s2 3p6
Q. What is the electron configuration of a neutral oxygen atom?
  • A. 1s2 2s2 2p4
  • B. 1s2 2s2 2p6
  • C. 1s2 2s2 2p3
  • D. 1s2 2s2 2p5
Q. What is the electron configuration of a neutral sulfur atom?
  • A. 1s2 2s2 2p6 3s2 3p4
  • B. 1s2 2s2 2p6 3s2 3p6
  • C. 1s2 2s2 2p6 3s2 3p3
  • D. 1s2 2s2 2p6 3s2 3p5
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