Undergraduate

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Q. The forward bias condition in a diode occurs when: (2020)
  • A. Anode is at a higher potential than cathode
  • B. Cathode is at a higher potential than anode
  • C. Both terminals are at the same potential
  • D. None of the above
Q. The frequency of a simple harmonic oscillator is 5 Hz. What is its angular frequency? (2020)
  • A. 10 rad/s
  • B. 5 rad/s
  • C. 15 rad/s
  • D. 20 rad/s
Q. The frequency of a tuning fork is 440 Hz. What is the time period of the fork? (2019)
  • A. 0.00227 s
  • B. 0.0045 s
  • C. 0.01 s
  • D. 0.005 s
Q. The frequency of a tuning fork is 440 Hz. What is the time period of the sound wave produced? (2022)
  • A. 0.00227 s
  • B. 0.0045 s
  • C. 0.01 s
  • D. 0.005 s
Q. The Freundlich adsorption isotherm is best described by which equation? (2023)
  • A. x/m = kP
  • B. x/m = kP^(1/n)
  • C. P = k(x/m)
  • D. P = k(x/m)^(1/n)
Q. The fusion of male and female gametes in plants is known as: (2021)
  • A. Fertilization
  • B. Pollination
  • C. Germination
  • D. Mitosis
Q. The gravitational field strength at a distance r from a mass M is given by which formula? (2022)
  • A. GM/r^2
  • B. Gm/r^2
  • C. M/r^2
  • D. G/r^2
Q. The gravitational force between two objects is 10 N. If the distance between them is tripled, what will be the new force? (2022)
  • A. 10 N
  • B. 5 N
  • C. 1.11 N
  • D. 0.11 N
Q. The gravitational force is a function of which of the following? (2023)
  • A. Masses and distance
  • B. Masses only
  • C. Distance only
  • D. Masses and velocity
Q. The gravitational potential energy of an object is defined as: (2023)
  • A. The work done against gravity
  • B. The kinetic energy of the object
  • C. The energy due to motion
  • D. The energy stored in the object
Q. The gravitational potential energy of an object of mass m at height h is given by which formula? (2023)
  • A. mgh
  • B. gh/m
  • C. mg/h
  • D. m/hg
Q. The half-life of a first-order reaction is dependent on which of the following? (2020) 2020
  • A. Initial concentration of reactants
  • B. Rate constant
  • C. Temperature
  • D. All of the above
Q. The half-life of a first-order reaction is given by which of the following expressions? (2020)
  • A. t1/2 = 0.693/k
  • B. t1/2 = k/0.693
  • C. t1/2 = 1/k
  • D. t1/2 = k/1
Q. The half-life of a first-order reaction is independent of the initial concentration of the reactant. What is the expression for the half-life (t1/2)? (2022)
  • A. t1/2 = 0.693/k
  • B. t1/2 = k/0.693
  • C. t1/2 = 1/k
  • D. t1/2 = k/2
Q. The half-life of a first-order reaction is independent of the initial concentration. What is the expression for the half-life?
  • A. t₁/₂ = 0.693/k
  • B. t₁/₂ = k/0.693
  • C. t₁/₂ = 1/k
  • D. t₁/₂ = k/1
Q. The half-life of a first-order reaction is independent of the initial concentration of the reactant. What is the formula for the half-life (t1/2) of a first-order reaction? (2020)
  • A. t1/2 = 0.693/k
  • B. t1/2 = k/0.693
  • C. t1/2 = 1/k
  • D. t1/2 = k/1
Q. The half-life of a first-order reaction is independent of the initial concentration of the reactant. What is the expression for the half-life (t₁/₂)? (2022)
  • A. t₁/₂ = 0.693/k
  • B. t₁/₂ = k/0.693
  • C. t₁/₂ = 1/k
  • D. t₁/₂ = k/1
Q. The half-life of a first-order reaction is independent of the initial concentration of the reactant. What is the expression for the half-life? (2022)
  • A. t₁/₂ = 0.693/k
  • B. t₁/₂ = k/0.693
  • C. t₁/₂ = 1/k
  • D. t₁/₂ = k/1
Q. The half-life of a first-order reaction is independent of which of the following? (2022)
  • A. Initial concentration
  • B. Rate constant
  • C. Temperature
  • D. All of the above
Q. The half-life of a first-order reaction is independent of which parameter?
  • A. Initial concentration
  • B. Rate constant
  • C. Temperature
  • D. All of the above
Q. The heat capacity at constant volume (Cv) for an ideal gas is related to which of the following? (2023)
  • A. Change in internal energy
  • B. Change in enthalpy
  • C. Change in entropy
  • D. Change in Gibbs free energy
Q. The heat capacity at constant volume (Cv) is defined as: (2022)
  • A. The amount of heat required to raise the temperature of a substance by 1°C at constant pressure.
  • B. The amount of heat required to raise the temperature of a substance by 1°C at constant volume.
  • C. The total heat content of a substance.
  • D. The heat required to change the phase of a substance.
Q. The heat capacity at constant volume is defined as: (2023)
  • A. C_v = dQ/dT at constant pressure
  • B. C_v = dQ/dT at constant volume
  • C. C_v = dW/dT at constant volume
  • D. C_v = dQ/dP at constant volume
Q. The heat capacity of a substance is defined as: (2023)
  • A. The amount of heat required to raise the temperature of one gram by one degree Celsius.
  • B. The amount of heat required to raise the temperature of one mole by one degree Celsius.
  • C. The total heat content of the substance.
  • D. The heat required to change the state of the substance.
Q. The impedance of an RLC circuit is given by which of the following formulas? (2022)
  • A. Z = R + jX
  • B. Z = √(R² + (X_L - X_C)²)
  • C. Z = R + X_L + X_C
  • D. Z = R - jX
Q. The impedance of an RLC circuit is minimum when which condition is satisfied? (2022)
  • A. XL = XC
  • B. R = 0
  • C. R = XL
  • D. R = XC
Q. The Langmuir isotherm assumes that adsorption occurs at specific sites on the surface. What does this imply? (2020)
  • A. Adsorption is uniform.
  • B. Adsorption is multilayered.
  • C. Adsorption is monolayered.
  • D. Adsorption is temperature dependent.
Q. The Langmuir isotherm assumes that adsorption occurs at specific sites on the surface. What is the maximum coverage called? (2021)
  • A. Saturation
  • B. Monolayer
  • C. Multilayer
  • D. Equilibrium
Q. The law that relates the pressure and volume of a gas at constant temperature is known as: (2019)
  • A. Charles's Law
  • B. Avogadro's Law
  • C. Boyle's Law
  • D. Ideal Gas Law
Q. The law that relates the volume of a gas to its temperature at constant pressure is known as: (2018)
  • A. Boyle's Law
  • B. Charles's Law
  • C. Avogadro's Law
  • D. Graham's Law
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