JEE Main MCQ & Objective Questions

The JEE Main exam is a crucial step for students aspiring to enter prestigious engineering colleges in India. It tests not only knowledge but also the ability to apply concepts effectively. Practicing MCQs and objective questions is essential for scoring better, as it helps in familiarizing students with the exam pattern and enhances their problem-solving skills. Engaging with practice questions allows students to identify important questions and strengthen their exam preparation.

What You Will Practise Here

  • Fundamental concepts of Physics, Chemistry, and Mathematics
  • Key formulas and their applications in problem-solving
  • Important definitions and theories relevant to JEE Main
  • Diagrams and graphical representations for better understanding
  • Numerical problems and their step-by-step solutions
  • Previous years' JEE Main questions for real exam experience
  • Time management strategies while solving MCQs

Exam Relevance

The topics covered in JEE Main are not only significant for the JEE exam but also appear in various CBSE and State Board examinations. Many concepts are shared with the NEET syllabus, making them relevant across multiple competitive exams. Common question patterns include conceptual applications, numerical problems, and theoretical questions that assess a student's understanding of core subjects.

Common Mistakes Students Make

  • Misinterpreting the question stem, leading to incorrect answers
  • Neglecting units in numerical problems, which can change the outcome
  • Overlooking negative marking and not managing time effectively
  • Relying too heavily on rote memorization instead of understanding concepts
  • Failing to review and analyze mistakes from practice tests

FAQs

Question: How can I improve my speed in solving JEE Main MCQ questions?
Answer: Regular practice with timed quizzes and focusing on shortcuts can significantly enhance your speed.

Question: Are the JEE Main objective questions similar to previous years' papers?
Answer: Yes, many questions are based on previous years' patterns, so practicing them can be beneficial.

Question: What is the best way to approach JEE Main practice questions?
Answer: Start with understanding the concepts, then attempt practice questions, and finally review your answers to learn from mistakes.

Now is the time to take charge of your preparation! Dive into solving JEE Main MCQs and practice questions to test your understanding and boost your confidence for the exam.

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 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 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
Q. What is the electron pair geometry of SF6?
  • A. Tetrahedral
  • B. Trigonal bipyramidal
  • C. Octahedral
  • D. Square planar
Q. What is the electronic configuration of a chlorine ion (Cl-)?
  • A. 1s2 2s2 2p6 3s2 3p5
  • B. 1s2 2s2 2p6
  • C. 1s2 2s2 2p6 3s2 3p6
  • D. 1s2 2s2 2p6 3s2 3p4
Q. What is the electronic configuration of a neutral oxygen atom?
  • A. 1s2 2s2 2p4
  • B. 1s2 2s2 2p6
  • C. 1s2 2s2 2p2
  • D. 1s2 2s2 2p5
Q. What is the electronic configuration of a neutral sodium atom?
  • A. 1s2 2s2 2p6 3s1
  • B. 1s2 2s2 2p6
  • C. 1s2 2s2 2p5
  • D. 1s2 2s2 2p6 3s2
Q. What is the electronic configuration of a sodium ion (Na+)?
  • A. 1s2 2s2 2p6
  • B. 1s2 2s2 2p6 3s1
  • C. 1s2 2s2 2p5
  • D. 1s2 2s2 2p6 3s2
Q. What is the electronic configuration of Chlorine?
  • A. 1s2 2s2 2p6 3s2 3p5
  • B. 1s2 2s2 2p6 3s2 3p4
  • C. 1s2 2s2 2p6 3s2 3p6
  • D. 1s2 2s2 2p6 3s2 3p3
Q. What is the electronic configuration of Iron?
  • A. [Ar] 4s2 3d6
  • B. [Ar] 4s2 3d8
  • C. [Ar] 4s2 3d5
  • D. [Ar] 4s2 3d7
Q. What is the electronic configuration of oxygen?
  • A. 1s2 2s2 2p4
  • B. 1s2 2s2 2p6
  • C. 1s2 2s2 2p2
  • D. 1s2 2s2 2p5
Q. What is the electronic 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 3p⁶
Q. What is the electronic configuration of the chloride ion (Cl-)?
  • A. 1s2 2s2 2p6 3s2 3p5
  • B. 1s2 2s2 2p6 3s2 3p6
  • C. 1s2 2s2 2p6 3s2 3p4
  • D. 1s2 2s2 2p6 3s2 3p3
Q. What is the electronic configuration of the element with atomic number 104?
  • A. [Rn] 5f14 6d2
  • B. [Rn] 5f14 6d4
  • C. [Rn] 5f14 6d8
  • D. [Rn] 5f14 7s2
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