Major Competitive Exams

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Q. The electric field between the plates of a parallel plate capacitor is given by which expression? (2020)
  • A. E = V/d
  • B. E = d/V
  • C. E = CV
  • D. E = Q/A
Q. The electric field due to a dipole at a point along the axial line is given by which formula? (2023)
  • A. k * p / r²
  • B. k * p / r³
  • C. k * p / r
  • D. k * p / r⁴
Q. The electric field due to a point charge is given by which formula? (2020)
  • A. kQ/r^2
  • B. kQ/r
  • C. Q/4πε₀r^2
  • D. Q/4πε₀r
Q. The electric potential due to a point charge is given by which formula? (2019)
  • A. V = kQ/r
  • B. V = Q/r
  • C. V = kQ/r^2
  • D. V = kQ
Q. The electric potential due to a uniformly charged sphere at a point outside the sphere is equivalent to that of?
  • A. A point charge at the center
  • B. A point charge at the surface
  • C. A point charge at the edge
  • D. A hollow sphere
Q. The electrochemical series is a list of elements arranged according to their: (2022)
  • A. Atomic mass
  • B. Electronegativity
  • C. Standard electrode potentials
  • D. Ionization energy
Q. The electrochemical series is a list of: (2023)
  • A. Reactions
  • B. Electrodes arranged by standard electrode potential
  • C. Ionic compounds
  • D. Gases
Q. The energy of a simple harmonic oscillator is maximum at which point? (2022)
  • A. Mean position
  • B. Amplitude
  • C. Quarter amplitude
  • D. Half amplitude
Q. The energy of a simple harmonic oscillator is proportional to which of the following?
  • A. Displacement
  • B. Velocity
  • C. Square of amplitude
  • D. Frequency
Q. The energy stored in a capacitor is directly proportional to which of the following? (2023)
  • A. Charge
  • B. Voltage
  • C. Capacitance
  • D. All of the above
Q. The energy stored in a capacitor is given by which of the following formulas? (2021)
  • A. 1/2 CV^2
  • B. CV
  • C. Q/V
  • D. 1/2 QV
Q. The energy stored in an object due to its position is called _____. (2019)
  • A. Kinetic energy
  • B. Potential energy
  • C. Thermal energy
  • D. Chemical energy
Q. The enthalpy change for a reaction can be calculated using which of the following?
  • A. Bond energies
  • B. Standard enthalpies of formation
  • C. Calorimetry
  • D. All of the above
Q. The enthalpy change for the reaction A + B → C is +50 kJ/mol. What can be said about the reaction?
  • A. It is exothermic
  • B. It is endothermic
  • C. It is spontaneous
  • D. It is at equilibrium
Q. The enthalpy of vaporization of a substance is defined as:
  • A. The heat required to melt the substance
  • B. The heat required to convert a liquid into a gas
  • C. The heat released during condensation
  • D. The heat required to raise the temperature of a substance
Q. The enthalpy of vaporization of water is approximately ____ kJ/mol.
  • A. 40.79
  • B. 60.79
  • C. 80.79
  • D. 100.79
Q. The enthalpy of vaporization of water is approximately:
  • A. 40.79 kJ/mol
  • B. 2260 kJ/mol
  • C. 100 kJ/mol
  • D. 60 kJ/mol
Q. The entropy change for a phase transition at constant temperature is given by:
  • A. ΔS = ΔH/T
  • B. ΔS = T/ΔH
  • C. ΔS = ΔH*T
  • D. ΔS = ΔH + T
Q. The entropy change for a reaction can be calculated using which of the following?
  • A. ΔS = ΣS(products) - ΣS(reactants)
  • B. ΔS = ΣS(reactants) - ΣS(products)
  • C. ΔS = Q/T
  • D. ΔS = W/T
Q. The entropy of a perfect crystal at absolute zero is given by:
  • A. R
  • B. 0
  • C.
  • D. 1
Q. The entropy of a perfect crystal at absolute zero is:
  • A. Maximum
  • B. Minimum
  • C. Undefined
  • D. Infinite
Q. The entropy of a perfect crystal at absolute zero temperature is given by which law?
  • A. Third law of thermodynamics
  • B. First law of thermodynamics
  • C. Second law of thermodynamics
  • D. Zeroth law of thermodynamics
Q. The entropy of a perfect crystal at absolute zero temperature is given by:
  • A. 0
  • B. 1
  • C. Infinity
  • D. Depends on the substance
Q. The entropy of a perfect crystalline substance at absolute zero is given by which law?
  • A. Third law of thermodynamics
  • B. First law of thermodynamics
  • C. Second law of thermodynamics
  • D. Zeroth law of thermodynamics
Q. The entropy of a perfect crystalline substance at absolute zero is given by: (2021)
  • A. 0 J/K
  • B. 1 J/K
  • C. 2 J/K
  • D. Depends on the substance
Q. The entropy of a perfect crystalline substance at absolute zero is:
  • A. Zero
  • B. Maximum
  • C. Undefined
  • D. Infinite
Q. The equation of a line parallel to y = 2x + 3 and passing through (1, 1) is?
  • A. y = 2x - 1
  • B. y = 2x + 1
  • C. y = 2x + 3
  • D. y = 2x - 3
Q. The equation of a line passing through (1, 2) and (3, 6) is:
  • A. y = 2x
  • B. y = 3x - 1
  • C. y = x + 1
  • D. y = 4x - 2
Q. The equation of a line passing through the points (1, 2) and (3, 6) is:
  • A. y = 2x
  • B. y = 3x - 1
  • C. y = x + 1
  • D. y = 4x - 2
Q. The equation of a line with slope 2 passing through the point (1, 3) is?
  • A. y = 2x + 1
  • B. y = 2x + 2
  • C. y = 2x + 3
  • D. y = 2x - 1
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