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 effect of temperature on the resistance in a Wheatstone bridge?
  • A. Resistance increases with temperature
  • B. Resistance decreases with temperature
  • C. Resistance remains constant
  • D. Depends on the material
Q. What is the effect of temperature on the resistance of a conductor?
  • A. Resistance increases with temperature
  • B. Resistance decreases with temperature
  • C. Resistance remains constant
  • D. Resistance is independent of temperature
Q. What is the effect of temperature on the resistance of the potentiometer wire?
  • A. Resistance decreases with temperature
  • B. Resistance increases with temperature
  • C. Resistance remains constant
  • D. Resistance fluctuates randomly
Q. What is the effect of temperature on the speed of sound in air?
  • A. Increases with temperature
  • B. Decreases with temperature
  • C. No effect
  • D. Increases then decreases
Q. What is the effect of temperature on the surface tension of a liquid?
  • A. Surface tension increases with temperature
  • B. Surface tension decreases with temperature
  • C. Surface tension remains constant with temperature
  • D. Surface tension is independent of the nature of the liquid
Q. What is the effect of temperature on the surface tension of water?
  • A. Increases with temperature
  • B. Decreases with temperature
  • C. Remains constant
  • D. Varies unpredictably
Q. What is the effect of temperature on the vapor pressure of a solvent according to Raoult's Law?
  • A. Vapor pressure decreases with temperature
  • B. Vapor pressure increases with temperature
  • C. Vapor pressure remains constant with temperature
  • D. Vapor pressure is independent of the solvent
Q. What is the effect of temperature on the viscosity of liquids?
  • A. Increases with temperature
  • B. Decreases with temperature
  • C. Remains constant
  • D. Varies randomly
Q. What is the effect of the +M effect on the stability of a carbocation?
  • A. Destabilizes the carbocation
  • B. Stabilizes the carbocation
  • C. No effect on stability
  • D. Increases acidity
Q. What is the effect of the -I effect on acidity?
  • A. Increases acidity
  • B. Decreases acidity
  • C. No effect on acidity
  • D. Depends on the solvent
Q. What is the effect of the -I group on acidity?
  • A. Increases acidity
  • B. Decreases acidity
  • C. No effect on acidity
  • D. Depends on the solvent
Q. What is the effect of the -M (mesomeric) effect on the stability of a carbocation?
  • A. Destabilizes the carbocation
  • B. Stabilizes the carbocation
  • C. No effect on stability
  • D. Increases acidity
Q. What is the effect of the -M group on the stability of a carbocation?
  • A. Destabilizes the carbocation
  • B. Stabilizes the carbocation
  • C. No effect on stability
  • D. Increases acidity
Q. What is the effect on the angular momentum of a system if an external torque is applied?
  • A. It increases
  • B. It decreases
  • C. It changes
  • D. It remains constant
Q. What is the effect on the total current in a circuit if an additional resistor is added in parallel to an existing resistor?
  • A. Increases
  • B. Decreases
  • C. Remains the same
  • D. Becomes zero
Q. What is the effect on the total resistance in a circuit when more resistors are added in series?
  • A. Increases
  • B. Decreases
  • C. Remains the same
  • D. Becomes zero
Q. What is the effect on the total resistance when a resistor is added in parallel to an existing resistor?
  • A. Increases
  • B. Decreases
  • C. Remains the same
  • D. Doubles
Q. What is the effect on the total resistance when more resistors are added in parallel?
  • A. Increases
  • B. Decreases
  • C. Remains the same
  • D. Depends on the resistors
Q. What is the effect on the total resistance when more resistors are added in parallel to a circuit?
  • A. Increases
  • B. Decreases
  • C. Remains the same
  • D. Doubles
Q. What is the effect on the total resistance when more resistors are added in series?
  • A. Increases
  • B. Decreases
  • C. Remains the same
  • D. Depends on the resistors
Q. What is the effect on the total resistance when more resistors are added in series to a circuit?
  • A. It decreases
  • B. It increases
  • C. It remains the same
  • D. It becomes zero
Q. What is the efficiency of a Carnot engine operating between temperatures T1 and T2?
  • A. (T1 - T2) / T1
  • B. T2 / T1
  • C. (T1 - T2) / T2
  • D. 1 - (T2 / T1)
Q. What is the electric field at a distance d from an infinitely long charged wire with linear charge density λ?
  • A. λ/(2πε₀d)
  • B. λ/(4πε₀d²)
  • C. λ/(2πε₀d²)
  • D. 0
Q. What is the electric field at a distance of 1m from a charge of +1μC?
  • A. 9 × 10^9 N/C
  • B. 9 × 10^6 N/C
  • C. 9 × 10^3 N/C
  • D. 9 × 10^12 N/C
Q. What is the electric field at a distance r from a uniformly charged disk of radius R and surface charge density σ?
  • A. σ/(2ε₀)
  • B. σ/(4ε₀)
  • C. σ/(2ε₀) * (1 - r/√(R² + r²))
  • D. Zero
Q. What is the electric field at a distance r from a uniformly charged sphere of radius R and total charge Q, when r > R?
  • A. Q/(4πε₀r²)
  • B. Q/(4πε₀R²)
  • C. Zero
  • D. Q/(4πε₀R)
Q. What is the electric field at a distance r from an infinitely long line charge with linear charge density λ?
  • A. λ/2πε₀r
  • B. λ/4πε₀r²
  • C. λ/ε₀r
  • D. λ/2ε₀r²
Q. What is the electric field at a distance r from an infinitely long line of charge with linear charge density λ?
  • A. λ/(2πε₀r)
  • B. λ/(4πε₀r²)
  • C. λ/(2πε₀r²)
  • D. 0
Q. What is the electric field at a point due to a positive charge?
  • A. Directed towards the charge
  • B. Directed away from the charge
  • C. Zero
  • D. Depends on the distance from the charge
Q. What is the electric field at a point just outside a charged conductor?
  • A. 0
  • B. σ/ε₀
  • C. σ/2ε₀
  • D. σ/4ε₀
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