Major Competitive Exams

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Q. What is the formula for calculating the impedance in an RLC series circuit? (2022)
  • A. Z = R + jX
  • B. Z = √(R^2 + X^2)
  • C. Z = R + X
  • D. Z = R - jX
Q. What is the formula for calculating the induced EMF in a coil? (2023)
  • A. E = -dΦ/dt
  • B. E = R * I
  • C. E = V * I
  • D. E = L * di/dt
Q. What is the formula for calculating the magnetic force on a charged particle moving in a magnetic field?
  • A. F = qE
  • B. F = qvBsinθ
  • C. F = mv^2/r
  • D. F = qvE
Q. What is the formula for calculating the normality of a solution?
  • A. N = M x n
  • B. N = M / n
  • C. N = M + n
  • D. N = M - n
Q. What is the formula for calculating the number of atoms in a face-centered cubic unit cell? (2022)
  • A. N = 4
  • B. N = 2
  • C. N = 1
  • D. N = 8
Q. What is the formula for calculating the number of moles from mass and molar mass? (2023)
  • A. moles = mass × molar mass
  • B. moles = mass / molar mass
  • C. moles = molar mass / mass
  • D. moles = mass + molar mass
Q. What is the formula for calculating the number of moles from mass? (2023)
  • A. moles = mass / molar mass
  • B. moles = mass × molar mass
  • C. moles = mass + molar mass
  • D. moles = mass - molar mass
Q. What is the formula for calculating the number of moles of solute in a solution? (2023)
  • A. Molarity x Volume
  • B. Molarity / Volume
  • C. Volume / Molarity
  • D. Moles x Volume
Q. What is the formula for calculating the number of moles?
  • A. Moles = Mass / Volume
  • B. Moles = Mass x Volume
  • C. Moles = Mass / Molar Mass
  • D. Moles = Molar Mass / Mass
Q. What is the formula for calculating the number of moles? (2023) 2023
  • A. Mass/Volume
  • B. Mass/Molar Mass
  • C. Volume/Mass
  • D. Molar Mass/Volume
Q. What is the formula for calculating the pH of a solution?
  • A. pH = log[H+]
  • B. pH = -log[H+]
  • C. pH = [H+]
  • D. pH = 14 - pOH
Q. What is the formula for calculating the potential energy of an object at height h?
  • A. PE = mgh
  • B. PE = 1/2 mv²
  • C. PE = mv²
  • D. PE = mgh²
Q. What is the formula for calculating the power consumed in an electrical circuit?
  • A. P = IV
  • B. P = I/R
  • C. P = V/R
  • D. P = IR
Q. What is the formula for calculating the total current in a parallel RLC circuit? (2023)
  • A. I = V/R
  • B. I = V/(1/R + 1/X)
  • C. I = V/(R + X)
  • D. I = V/R + V/X
Q. What is the formula for calculating the total power in a series RLC circuit?
  • A. P = VI
  • B. P = I^2R
  • C. P = V^2/R
  • D. P = VI cos(φ)
Q. What is the formula for calculating the total power in an AC circuit with a power factor?
  • A. P = VI
  • B. P = VI cos(φ)
  • C. P = VI sin(φ)
  • D. P = V^2/R
Q. What is the formula for calculating the work done by a force?
  • A. W = Fd
  • B. W = F/v
  • C. W = F/t
  • D. W = mv
Q. What is the formula for calculating work done? (2023)
  • A. W = Fd cos(θ)
  • B. W = Fd sin(θ)
  • C. W = F + d
  • D. W = F/d
Q. What is the formula for gravitational potential energy?
  • A. PE = mgh
  • B. PE = 1/2 mv²
  • C. PE = mv
  • D. PE = mgh²
Q. What is the formula for kinetic energy? (2023)
  • A. KE = mv²
  • B. KE = 1/2 mv²
  • C. KE = mgh
  • D. KE = Fd
Q. What is the formula for the angular position of the first minimum in a double-slit diffraction pattern?
  • A. d sin(θ) = mλ
  • B. d sin(θ) = (m + 1/2)λ
  • C. d sin(θ) = (m - 1/2)λ
  • D. d sin(θ) = 2mλ
Q. What is the formula for the angular position of the m-th order maximum in a double-slit experiment?
  • A. d sin θ = mλ
  • B. d cos θ = mλ
  • C. d tan θ = mλ
  • D. d = mλ/sin θ
Q. What is the formula for the average power consumed in an AC circuit with a phase angle φ? (2020)
  • A. P = VI
  • B. P = VI cos(φ)
  • C. P = VI sin(φ)
  • D. P = V²/R
Q. What is the formula for the average power consumed in an AC circuit with a resistor? (2019)
  • A. P = VI
  • B. P = V²/R
  • C. P = I²R
  • D. All of the above
Q. What is the formula for the capacitance of a parallel plate capacitor?
  • A. C = εA/d
  • B. C = A/εd
  • C. C = d/εA
  • D. C = εd/A
Q. What is the formula for the complex formed between iron(III) and thiocyanate? (2021)
  • A. [Fe(SCN)3]
  • B. [Fe(SCN)2]
  • C. [Fe(SCN)6]3+
  • D. [Fe(SCN)4]2-
Q. What is the formula for the complex formed when silver ion reacts with ammonia?
  • A. Ag(NH3)2+
  • B. Ag(NH3)2Cl
  • C. Ag(NH3)3+
  • D. Ag(NH3)4+
Q. What is the formula for the equivalent resistance in a balanced Wheatstone bridge?
  • A. R_eq = (P + Q)
  • B.
  • C. (R + S)
  • D. R_eq = P + Q + R + S
  • . R_eq = P
  • .
  • . Q + R
  • .
  • . S
  • . R_eq = (P*R)/(Q + S)
Q. What is the formula for the equivalent resistance of two resistors R1 and R2 in series?
  • A. R_eq = R1 + R2
  • B. R_eq = R1 * R2 / (R1 + R2)
  • C. R_eq = R1 - R2
  • D. R_eq = R1 / R2
Q. What is the formula for the equivalent resistance of two resistors R1 and R2 in series in a Wheatstone bridge?
  • A. R1 + R2
  • B. R1 * R2 / (R1 + R2)
  • C. R1 - R2
  • D. 1/(1/R1 + 1/R2)
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