Major Competitive Exams

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Q. What is the electric potential at a distance of 3 m from a charge of 10 μC?
  • A. 3000 V
  • B. 9000 V
  • C. 6000 V
  • D. 1000 V
Q. What is the electric potential at a distance of 4 m from a charge of 8 μC? (2000)
  • A. 4500 V
  • B. 1800 V
  • C. 2000 V
  • D. None of the above
Q. What is the electric potential at a point 0.3m away from a charge of +4μC?
  • A. 12000 V
  • B. 3000 V
  • C. 6000 V
  • D. 9000 V
Q. What is the electric potential at a point 0.4 m away from a charge of +5 µC?
  • A. 45 V
  • B. 50 V
  • C. 55 V
  • D. 60 V
Q. What is the electric potential at a point due to a charge Q at a distance r? (2021)
  • A. kQ/r
  • B. kQr
  • C. kQ/r^2
  • D. 0
Q. What is the electric potential at a point due to a point charge?
  • A. kQ/r
  • B. Q/(4πε₀r²)
  • C. kQ/(4πε₀r)
  • D. Q/(4πr²)
Q. What is the electric potential at a point due to a positive point charge?
  • A. Zero
  • B. Positive
  • C. Negative
  • D. Depends on distance
Q. What is the electric potential at a point in space where the electric field is zero?
  • A. Zero
  • B. Positive
  • C. Negative
  • D. Undefined
Q. What is the electric potential due to a dipole at a point along the axial line at a distance 'r' from the center of the dipole?
  • A. 0
  • B. k * p / r²
  • C. k * p / r
  • D. k * p / 2r
Q. What is the electric potential due to a point charge at a distance r?
  • A. k * q / r
  • B. k * q / r^2
  • C. k * q * r
  • D. k * q * r^2
Q. What is the electric potential due to a point charge of 5 μC at a distance of 2 m?
  • A. 0 V
  • B. 2250 V
  • C. 1125 V
  • D. 4500 V
Q. What is the electric potential energy of a charge of 1 C at a point where the electric potential is 10 V?
  • A. 10 J
  • B. 1 J
  • C. 0 J
  • D. 100 J
Q. What is the electric potential energy of a charge of 1 C placed in an electric field of 10 N/C at a distance of 2 m?
  • A. 20 J
  • B. 10 J
  • C. 5 J
  • D. 2 J
Q. What is the electric potential energy of a charge of 1 μC placed in an electric potential of 200 V?
  • A. 0.2 mJ
  • B. 0.1 mJ
  • C. 0.4 mJ
  • D. 0.5 mJ
Q. What is the electric potential energy of a system of two charges +q and -q separated by a distance r?
  • A. 0
  • B. kq²/r
  • C. -kq²/r
  • D. kq/r
Q. What is the electric potential energy of a system of two charges of +2 μC and -2 μC separated by 0.5 m?
  • A. -72 J
  • B. 72 J
  • C. 0 J
  • D. -36 J
Q. What is the electric potential energy of a system of two point charges Q1 and Q2 separated by a distance r?
  • A. kQ1Q2/r
  • B. kQ1Q2/2r
  • C. kQ1Q2/r²
  • D. kQ1Q2
Q. What is the electron configuration of a chlorine atom (atomic number 17)? (2020)
  • A. 1s² 2s² 2p⁶ 3s² 3p⁵
  • B. 1s² 2s² 2p⁶ 3s² 3p⁶
  • C. 1s² 2s² 2p⁶ 3s² 3p⁴
  • D. 1s² 2s² 2p⁶ 3s² 3d⁵
Q. What is the electron configuration of an oxygen atom? (2021)
  • A. 1s² 2s² 2p⁴
  • B. 1s² 2s² 2p²
  • C. 1s² 2s² 2p⁶
  • D. 1s² 2s² 2p³
Q. What is the electron configuration of Chromium (Cr)?
  • A. [Ar] 4s2 3d4
  • B. [Ar] 4s1 3d5
  • C. [Ar] 4s2 3d5
  • D. [Ar] 4s2 3d3
Q. What is the electron configuration of Chromium?
  • A. [Ar] 3d4 4s2
  • B. [Ar] 3d5 4s1
  • C. [Ar] 3d6 4s2
  • D. [Ar] 3d3 4s2
Q. What is the electron configuration of Magnesium?
  • A. 1s² 2s² 2p⁶ 3s²
  • B. 1s² 2s² 2p⁶ 3s² 3p¹
  • C. 1s² 2s² 2p⁶ 3s² 3p²
  • D. 1s² 2s² 2p⁶ 3s² 3d¹
Q. What is the electron configuration of oxygen (O)?
  • A. 1s2 2s2 2p4
  • B. 1s2 2s2 2p6
  • C. 1s2 2s1 2p5
  • D. 1s2 2s2 2p3
Q. What is the electron configuration of potassium (K)?
  • A. 1s² 2s² 2p⁶ 3s¹
  • B. 1s² 2s² 2p⁶ 3s²
  • C. 1s² 2s² 2p⁶ 3s² 3p¹
  • D. 1s² 2s² 2p⁶ 3s² 3p²
Q. What is the electron configuration of the alkali metal potassium (K)?
  • A. 1s² 2s² 2p⁶ 3s¹
  • B. 1s² 2s² 2p⁶ 3s²
  • C. 1s² 2s² 2p⁶ 3s² 3p¹
  • D. 1s² 2s² 2p⁶ 3s² 3p²
Q. What is the electron configuration of the alkaline earth metal magnesium?
  • A. 1s² 2s² 2p⁶ 3s²
  • B. 1s² 2s² 2p⁶ 3s² 3p²
  • C. 1s² 2s² 2p⁶ 3s² 3p⁶
  • D. 1s² 2s² 2p⁶ 3s² 3p⁶ 4s²
Q. What is the electron configuration of the element with atomic number 12?
  • A. 1s2 2s2 2p6 3s2
  • B. 1s2 2s2 2p6 3s2 3p1
  • C. 1s2 2s2 2p6 3s2 3p6
  • D. 1s2 2s2 2p6 3s2 3d10
Q. What is the electron configuration of the element with atomic number 26?
  • A. 1s2 2s2 2p6 3s2 3p6 4s2 3d6
  • B. 1s2 2s2 2p6 3s2 3p6 4s2 3d5
  • C. 1s2 2s2 2p6 3s2 3p6 4s2 3d7
  • D. 1s2 2s2 2p6 3s2 3p6 4s2 3d8
Q. What is the electron configuration of the s-block element magnesium?
  • A. 1s² 2s² 2p⁶ 3s²
  • B. 1s² 2s² 2p⁶ 3s² 3p¹
  • C. 1s² 2s² 2p⁶ 3s² 3p²
  • D. 1s² 2s² 2p⁶ 3s² 3d¹
Q. What is the electron pair geometry of NH3?
  • A. Tetrahedral
  • B. Trigonal planar
  • C. Octahedral
  • D. Linear
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