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Q. What are the solutions of the equation cos(x) = -1/2 in the interval [0, 2π]?
  • A. 2π/3, 4π/3
  • B. π/3, 5π/3
  • C. π/2, 3π/2
  • D. 0, π
Q. What are the solutions of the equation cos(x) = -1/2?
  • A. 2π/3
  • B. 4π/3
  • C. π/3
  • D. 5π/3
Q. What are the solutions of the equation cos^2(x) - 1/2 = 0?
  • A. x = π/4
  • B. x = 3π/4
  • C. x = 5π/4
  • D. x = 7π/4
Q. What are the solutions of the equation sin(2x) = 0 in the interval [0, 2π]?
  • A. 0, π, 2π
  • B. 0, π/2, π
  • C. 0, π/4, π/2
  • D. 0, 3π/2
Q. What are the solutions of the equation sin(2x) = 0?
  • A. x = nπ/2
  • B. x = nπ
  • C. x = nπ + π/2
  • D. x = nπ + π
Q. What are the solutions of the equation sin(x) = sin(π/3)?
  • A. x = π/3
  • B. x = 2π/3
  • C. x = 4π/3
  • D. x = 5π/3
Q. What are the solutions of the equation sin^2(x) - sin(x) = 0?
  • A. x = nπ
  • B. x = nπ + π/2
  • C. x = nπ + 2π
  • D. x = nπ + π
Q. What does a large negative value of ΔG indicate about a reaction?
  • A. The reaction is highly spontaneous.
  • B. The reaction is non-spontaneous.
  • C. The reaction is at equilibrium.
  • D. The reaction requires a catalyst.
Q. What does a negative ΔG indicate about a chemical reaction?
  • A. The reaction is at equilibrium.
  • B. The reaction is non-spontaneous.
  • C. The reaction is spontaneous.
  • D. The reaction requires energy input.
Q. What does a positive ΔG indicate about a reaction?
  • A. The reaction is spontaneous.
  • B. The reaction is non-spontaneous.
  • C. The reaction is at equilibrium.
  • D. The reaction releases energy.
Q. What does a positive ΔG indicate about the spontaneity of a reaction?
  • A. The reaction is spontaneous.
  • B. The reaction is non-spontaneous.
  • C. The reaction is at equilibrium.
  • D. The reaction is exothermic.
Q. What does a positive ΔS indicate about a system?
  • A. The system is becoming more ordered.
  • B. The system is becoming more disordered.
  • C. The reaction is non-spontaneous.
  • D. The reaction is at equilibrium.
Q. What does a ΔG value of zero indicate about a reaction?
  • A. The reaction is spontaneous.
  • B. The reaction is at equilibrium.
  • C. The reaction is non-spontaneous.
  • D. The reaction is exothermic.
Q. What does Ampere's Law relate to in electromagnetism?
  • A. Electric field and charge
  • B. Magnetic field and current
  • C. Electric potential and capacitance
  • D. Magnetic flux and resistance
Q. What does Gauss's law relate to in electrostatics?
  • A. Electric field and charge distribution
  • B. Magnetic field and current
  • C. Pressure and volume
  • D. Temperature and heat
Q. What does Ohm's Law state?
  • A. Voltage is directly proportional to current
  • B. Current is directly proportional to resistance
  • C. Resistance is directly proportional to voltage
  • D. Voltage is inversely proportional to current
Q. What does Raoult's Law state about the vapor pressure of a solution?
  • A. It is directly proportional to the mole fraction of the solvent.
  • B. It is inversely proportional to the mole fraction of the solute.
  • C. It is equal to the vapor pressure of the solute.
  • D. It is independent of temperature.
Q. What does the Biot-Savart Law describe?
  • A. The force between two charges
  • B. The magnetic field generated by a steady current
  • C. The electric field due to a point charge
  • D. The potential energy of a system of charges
Q. What does the first law of thermodynamics state?
  • A. Energy can be created and destroyed.
  • B. The total energy of an isolated system is constant.
  • C. Heat cannot be converted into work.
  • D. The internal energy of a system is independent of its state.
Q. What does the Gibbs free energy change indicate?
  • A. Spontaneity of a reaction
  • B. Rate of a reaction
  • C. Equilibrium constant
  • D. Activation energy
Q. What does the term 'enthalpy of reaction' refer to?
  • A. The heat absorbed or released at constant pressure
  • B. The change in internal energy
  • C. The work done by the system
  • D. The temperature change during a reaction
Q. What does the term 'entropy' refer to in thermodynamics?
  • A. Energy stored in a system
  • B. Disorder or randomness in a system
  • C. Heat content of a system
  • D. Pressure of a system
Q. What does the term 'Gibbs free energy' indicate?
  • A. The total energy of a system
  • B. The energy available to do work
  • C. The heat content of a system
  • D. The entropy of a system
Q. What does the term 'surface tension' refer to?
  • A. Force per unit area
  • B. Energy required to increase surface area
  • C. Weight of a fluid
  • D. Density of a liquid
Q. What effect does adding salt to water have on its viscosity?
  • A. Increases viscosity
  • B. Decreases viscosity
  • C. No effect
  • D. Varies with concentration
Q. What effect does increasing temperature have on the Gibbs Free Energy of an endothermic reaction?
  • A. ΔG increases.
  • B. ΔG decreases.
  • C. ΔG remains constant.
  • D. ΔG becomes zero.
Q. What effect does increasing the concentration of a reactant have on the rate of a first-order reaction?
  • A. Increases the rate
  • B. Decreases the rate
  • C. No effect
  • D. Rate becomes zero
Q. What happens to the acceleration of an object if the net force acting on it is doubled while its mass remains constant?
  • A. It doubles
  • B. It halves
  • C. It remains the same
  • D. It quadruples
Q. What happens to the average kinetic energy of gas molecules if the temperature is increased?
  • A. It decreases.
  • B. It remains constant.
  • C. It increases.
  • D. It becomes zero.
Q. What happens to the average speed of gas molecules if the temperature is increased?
  • A. It decreases
  • B. It remains constant
  • C. It increases
  • D. It becomes zero
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