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 gravitational potential energy of a 5 kg mass at a height of 10 m above the ground?
  • A. 490 J
  • B. 500 J
  • C. 510 J
  • D. 450 J
Q. What is the gravitational potential energy of a mass 'm' at height 'h' above the Earth's surface?
  • A. mgh
  • B. mg/h
  • C. gh/m
  • D. mgh^2
Q. What is the gravitational potential energy of a mass m at a height h above the Earth's surface?
  • A. U = mgh
  • B. U = mg/h
  • C. U = mgh²
  • D. U = gh/m
Q. What is the gravitational potential energy of a mass of 10 kg at a height of 5 m in a gravitational field of strength 9.8 N/kg?
  • A. 490 J
  • B. 50 J
  • C. 98 J
  • D. 0 J
Q. What is the gravitational potential energy of a mass of 10 kg at a height of 5 m above the ground? (2000)
  • A. 500 J
  • B. 1000 J
  • C. 1500 J
  • D. 2000 J
Q. What is the gravitational potential energy of a mass of 10 kg at a height of 5 m above the ground? (g = 9.8 m/s²)
  • A. 490 J
  • B. 98 J
  • C. 588 J
  • D. 0 J
Q. What is the gravitational potential energy of a mass of 2 kg at a height of 10 m? (g = 9.8 m/s²)
  • A. 19.6 J
  • B. 39.2 J
  • C. 78.4 J
  • D. 98 J
Q. What is the gravitational potential energy of a mass of 2 kg at a height of 10 m above the ground? (g = 9.8 m/s^2)
  • A. 196 J
  • B. 98 J
  • C. 20 J
  • D. 10 J
Q. What is the gravitational potential energy of a mass of 2 kg at a height of 10 m in a gravitational field of 9.8 m/s²?
  • A. 19.6 J
  • B. 39.2 J
  • C. 78.4 J
  • D. 98 J
Q. What is the gravitational potential energy of a satellite of mass m at a height h above the Earth's surface?
  • A. -GMm/R
  • B. -GMm/(R+h)
  • C. -GMm/(R-h)
  • D. -GMm/(R^2 + h^2)
Q. What is the gravitational potential energy of an object of mass m at a height h above the Earth's surface?
  • A. mgh
  • B. gh/m
  • C. mg/h
  • D. mgh^2
Q. What is the gravitational potential energy of two masses m1 and m2 separated by a distance r?
  • A. -G * (m1 * m2) / r
  • B. G * (m1 * m2) / r
  • C. G * (m1 + m2) / r
  • D. -G * (m1 + m2) / r
Q. What is the gravitational potential energy U of two masses m1 and m2 separated by a distance r?
  • A. U = -G * (m1 * m2) / r
  • B. U = G * (m1 * m2) / r
  • C. U = (m1 + m2) * r
  • D. U = G * (m1 - m2) / r
Q. What is the half-life of a radioactive isotope?
  • A. Time taken for half of the sample to decay
  • B. Time taken for the entire sample to decay
  • C. Time taken for the sample to double
  • D. None of the above
Q. What is the half-life of a radioactive substance if it takes 10 years for half of the substance to decay?
  • A. 5 years
  • B. 10 years
  • C. 20 years
  • D. 30 years
Q. What is the half-life of a radioactive substance?
  • A. The time taken for half of the substance to decay
  • B. The time taken for the entire substance to decay
  • C. The time taken for the substance to double
  • D. The time taken for the substance to reach equilibrium
Q. What is the heat required to raise the temperature of 250 g of aluminum from 25°C to 75°C? (Specific heat of aluminum = 0.9 J/g°C)
  • A. 4500 J
  • B. 5000 J
  • C. 6000 J
  • D. 7000 J
Q. What is the hybridization of a molecule with a tetrahedral shape?
  • A. sp
  • B. sp2
  • C. sp3
  • D. sp3d
Q. What is the hybridization of carbon atoms in benzene?
  • A. sp
  • B. sp2
  • C. sp3
  • D. dsp2
Q. What is the hybridization of nitrogen in a primary amine?
  • A. sp
  • B. sp2
  • C. sp3
  • D. None of the above
Q. What is the hybridization of nitrogen in amines?
  • A. sp
  • B. sp2
  • C. sp3
  • D. sp3d
Q. What is the hybridization of the carbon atom in acetylene (C2H2)?
  • A. sp
  • B. sp2
  • C. sp3
  • D. dsp3
Q. What is the hybridization of the carbon atom in CO2?
  • A. sp
  • B. sp2
  • C. sp3
  • D. dsp3
Q. What is the hybridization of the carbon atom in ethylene (C2H4)?
  • A. sp
  • B. sp2
  • C. sp3
  • D. sp3d
Q. What is the hybridization of the carbon atom in ethyne (C2H2)?
  • A. sp
  • B. sp2
  • C. sp3
  • D. dsp3
Q. What is the hybridization of the carbon atoms in alkenes?
  • A. sp
  • B. sp2
  • C. sp3
  • D. None of the above
Q. What is the hybridization of the carbon atoms in an alkyne?
  • A. sp
  • B. sp2
  • C. sp3
  • D. dsp3
Q. What is the hybridization of the carbon atoms in benzene?
  • A. sp
  • B. sp2
  • C. sp3
  • D. dsp3
Q. What is the hybridization of the carbon atoms in ethylene (C2H4)?
  • A. sp
  • B. sp2
  • C. sp3
  • D. sp3d
Q. What is the hybridization of the carbon atoms in ethyne (C2H2)?
  • A. sp
  • B. sp2
  • C. sp3
  • D. dsp3
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