Major Competitive Exams

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Q. For a system of particles, the moment of inertia is calculated as the sum of the products of mass and the square of the distance from the axis of rotation. This is known as:
  • A. Parallel Axis Theorem
  • B. Perpendicular Axis Theorem
  • C. Rotational Dynamics
  • D. Angular Momentum
Q. For a system of particles, the moment of inertia is calculated by summing which of the following?
  • A. Masses only
  • B. Distances only
  • C. Mass times distance squared
  • D. Mass times distance
Q. For a system of particles, the total moment of inertia is calculated by which of the following?
  • A. Sum of individual moments
  • B. Product of mass and distance
  • C. Sum of mass times distance squared
  • D. Average of individual moments
Q. For a system of particles, the total moment of inertia is calculated by which of the following methods?
  • A. Adding individual moments of inertia
  • B. Multiplying total mass by average distance
  • C. Using the parallel axis theorem
  • D. Using the perpendicular axis theorem
Q. For a thin circular ring of mass M and radius R, what is the moment of inertia about an axis perpendicular to its plane through its center?
  • A. MR^2
  • B. 1/2 MR^2
  • C. 2/3 MR^2
  • D. 1/3 MR^2
Q. For a toroidal solenoid with N turns and radius R carrying current I, what is the magnetic field inside the toroid?
  • A. μ₀NI/2πR
  • B. μ₀NI/R
  • C. μ₀NI/4πR
  • D. μ₀NI/2R
Q. For a uniformly charged sphere of radius R and total charge Q, what is the electric field at a distance r from the center where r > R?
  • A. Q/(4πε₀r²)
  • B. 0
  • C. Q/(4πε₀R²)
  • D. Q/(4πε₀r)
Q. For a zero-order reaction, how does the concentration of reactants change over time? (2020)
  • A. Linearly
  • B. Exponentially
  • C. Quadratically
  • D. Logarithmically
Q. For a zero-order reaction, how does the rate change with concentration?
  • A. Increases linearly
  • B. Decreases linearly
  • C. Remains constant
  • D. Increases exponentially
Q. For a zero-order reaction, how does the rate change with respect to concentration?
  • A. Increases linearly
  • B. Decreases linearly
  • C. Remains constant
  • D. Increases exponentially
Q. For a zero-order reaction, if the initial concentration is 0.5 M and the rate constant is 0.1 M/s, how long will it take to reach 0.2 M? (2021)
  • A. 3 s
  • B. 5 s
  • C. 2 s
  • D. 4 s
Q. For a zero-order reaction, if the initial concentration is 0.5 M and the rate constant is 0.1 M/s, how long will it take to reach 0 M? (2019)
  • A. 5 s
  • B. 10 s
  • C. 15 s
  • D. 20 s
Q. For an electron in a 3d orbital, what are the possible values of l?
  • A. 0
  • B. 1
  • C. 2
  • D. 3
Q. For an electron in a 3d orbital, what are the possible values of m_l?
  • A. -2, -1, 0, 1, 2
  • B. -1, 0, 1
  • C. 0, 1
  • D. 0, 1, 2
Q. For an electron in a 3p orbital, what are the possible values of m_l?
  • A. -1, 0, +1
  • B. 0, +1, +2
  • C. -2, -1, 0
  • D. 0, -1, -2
Q. For an electron in a 3p orbital, what are the possible values of m_s?
  • A. -1/2, +1/2
  • B. 0, +1
  • C. 1, 2
  • D. -1, 0, +1
Q. For an electron in a 3p orbital, what are the possible values of the magnetic quantum number (m_l)?
  • A. -1, 0, +1
  • B. 0, +1, +2
  • C. -2, -1, 0
  • D. 1, 2, 3
Q. For an electron in a 5d orbital, what are the possible values of m_l?
  • A. -2, -1, 0, 1, 2
  • B. -3, -2, -1, 0, 1, 2, 3
  • C. 0, 1, 2
  • D. -1, 0, 1
Q. For an ideal gas, if the temperature is increased, what happens to the RMS speed?
  • A. Increases
  • B. Decreases
  • C. Remains constant
  • D. Depends on the gas
Q. For an ideal gas, if the volume is halved while keeping the temperature constant, what happens to the pressure?
  • A. It remains the same
  • B. It doubles
  • C. It halves
  • D. It quadruples
Q. For an ideal gas, the equation of state is given by:
  • A. PV = nRT
  • B. PV = NkT
  • C. PV = mRT
  • D. PV = kT
Q. For an ideal gas, the work done during an isobaric process is given by which formula? (2022)
  • A. W = PΔV
  • B. W = nRT
  • C. W = ΔU + Q
  • D. W = 0
Q. For an ideal gas, which equation relates pressure, volume, and temperature?
  • A. PV = nRT
  • B. PV = nR
  • C. PV = RT
  • D. PV = nT
Q. For an ideal gas, which law relates pressure, volume, and temperature? (2023) 2023
  • A. Boyle's Law
  • B. Charles's Law
  • C. Ideal Gas Law
  • D. Avogadro's Law
Q. For an ideal gas, which of the following equations is correct?
  • A. PV = nRT
  • B. PV = nR/T
  • C. PV = nT/R
  • D. PV = nRT^2
Q. For an ideal gas, which of the following is true at constant temperature?
  • A. PV = nRT
  • B. P1V1 = P2V2
  • C. P/T = constant
  • D. V/T = constant
Q. For an ideal solution, if the mole fraction of the solvent is 0.75, what is the vapor pressure of the solution if the vapor pressure of the pure solvent is 100 mmHg?
  • A. 75 mmHg
  • B. 100 mmHg
  • C. 25 mmHg
  • D. 50 mmHg
Q. For an infinite plane sheet of charge with surface charge density σ, what is the electric field at a point near the sheet?
  • A. σ/2ε₀
  • B. σ/ε₀
  • C. 0
  • D. σ/4πε₀
Q. For an infinite plane sheet of charge with surface charge density σ, what is the electric field at any point?
  • A. σ/2ε₀
  • B. σ/ε₀
  • C. 0
  • D. σ/4πε₀
Q. For destructive interference to occur in a thin film, the path difference must be equal to:
  • A. nλ/2 (n is an integer)
  • B. nλ (n is an integer)
  • C. λ/4
  • D. λ/2
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