Undergraduate

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Q. What is the solution to the differential equation y' = 5y + 3?
  • A. y = (3/5) + Ce^(5x)
  • B. y = (5/3) + Ce^(5x)
  • C. y = Ce^(5x) - 3
  • D. y = Ce^(3x) + 5
Q. What is the solution to the equation dy/dx = -5y?
  • A. y = Ce^(-5x)
  • B. y = -5Ce^x
  • C. y = Ce^(5x)
  • D. y = 5Ce^(-x)
Q. What is the solution to the equation dy/dx = y^2? (2022)
  • A. y = 1/(C - x)
  • B. y = C/(x - 1)
  • C. y = Cx^2
  • D. y = ln(Cx)
Q. What is the solution to the equation y' + 2y = 0?
  • A. y = Ce^(-2x)
  • B. y = Ce^(2x)
  • C. y = 2Ce^x
  • D. y = Ce^x
Q. What is the solution to the equation y' + 3y = 0?
  • A. y = Ce^(-3x)
  • B. y = Ce^(3x)
  • C. y = 3Ce^(-x)
  • D. y = Ce^(-x/3)
Q. What is the solution to the equation y' = 3y + 6?
  • A. y = Ce^(3x) - 2
  • B. y = Ce^(3x) + 2
  • C. y = 2e^(3x)
  • D. y = 3Ce^(x)
Q. What is the solution to the equation y'' + 4y = 0?
  • A. y = C1 cos(2x) + C2 sin(2x)
  • B. y = C1 e^(2x) + C2 e^(-2x)
  • C. y = C1 e^(4x) + C2 e^(-4x)
  • D. y = C1 sin(4x) + C2 cos(4x)
Q. What is the solution to the equation y'' - 3y' + 2y = 0?
  • A. y = C1 e^(2x) + C2 e^(x)
  • B. y = C1 e^(x) + C2 e^(2x)
  • C. y = C1 e^(-x) + C2 e^(-2x)
  • D. y = C1 + C2x
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 a substance if it requires 500 J to raise the temperature of 2 kg of the substance by 10°C? (2021)
  • A. 25 J/kg°C
  • B. 50 J/kg°C
  • C. 100 J/kg°C
  • D. 200 J/kg°C
Q. What is the specific heat capacity of a substance if it requires 500 J to raise the temperature of 2 kg of the substance by 5°C? (2021)
  • A. 20 J/kg°C
  • B. 50 J/kg°C
  • C. 100 J/kg°C
  • D. 200 J/kg°C
Q. What is the specific heat capacity of a substance if it takes 500 J to raise the temperature of 2 kg of the substance by 5°C? (2021)
  • A. 20 J/kg°C
  • B. 50 J/kg°C
  • C. 100 J/kg°C
  • D. 200 J/kg°C
Q. What is the specific heat capacity of air? (2022)
  • A. 1.005 J/kg·K
  • B. 4.18 J/kg·K
  • C. 2.09 J/kg·K
  • D. 0.9 J/kg·K
Q. What is the specific heat capacity of iron? (2023)
  • A. 0.45 J/g·K
  • B. 1.00 J/g·K
  • C. 2.00 J/g·K
  • D. 4.18 J/g·K
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 if it takes 4200 J to raise the temperature of 1 kg of water by 1°C? (2021)
  • A. 2100 J/kg°C
  • B. 4200 J/kg°C
  • C. 8400 J/kg°C
  • D. 1000 J/kg°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 speed of light in vacuum? (2020)
  • A. 3 x 10^8 m/s
  • B. 3 x 10^6 m/s
  • C. 3 x 10^7 m/s
  • D. 3 x 10^9 m/s
Q. What is the square of the modulus of the complex number 1 + 2i? (2014)
  • A. 5
  • B. 4
  • C. 1
  • D. 2
Q. What is the square of the modulus of the complex number 1 + i? (2020)
  • A. 2
  • B. 1
  • C. 0
  • D. 4
Q. What is the square root of 64? (2020)
  • A. 6
  • B. 7
  • C. 8
  • D. 9
Q. What is the square root of the complex number -1? (2021)
  • A. i
  • B. -i
  • C. 1
  • D. 0
Q. What is the square root of the complex number -4? (2020)
  • A. 2i
  • B. -2i
  • C. 4i
  • D. -4i
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 standard enthalpy change (ΔH°) for the formation of water from its elements? (2022)
  • A. -285.83 kJ/mol
  • B. 0 kJ/mol
  • C. 285.83 kJ/mol
  • D. -241.82 kJ/mol
Q. What is the standard enthalpy change (ΔH°) for the reaction: C(s) + O2(g) → CO2(g)? (2022)
  • A. It is always positive.
  • B. It is always negative.
  • C. It can be zero.
  • D. It depends on the temperature.
Q. What is the standard reduction potential of a half-reaction? (2022)
  • A. The tendency to gain electrons
  • B. The tendency to lose electrons
  • C. The energy released during oxidation
  • D. The energy absorbed during reduction
Q. What is the standard reduction potential of the half-reaction Cu2+ + 2e- → Cu? (2022)
  • A. +0.34 V
  • B. +0.76 V
  • C. -0.34 V
  • D. -0.76 V
Q. What is the standard reduction potential of the half-reaction Fe^3+ + 3e- → Fe? (2022)
  • A. +0.77 V
  • B. +0.44 V
  • C. -0.77 V
  • D. -0.44 V
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