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. In a potentiometer, what is the role of the jockey?
  • A. To measure current.
  • B. To connect the circuit.
  • C. To find the balance point.
  • D. To provide a reference voltage.
Q. In a practical Wheatstone bridge, what is the effect of temperature on resistance measurements?
  • A. Temperature has no effect
  • B. Resistance increases with temperature
  • C. Resistance decreases with temperature
  • D. It depends on the material
Q. In a practical Wheatstone bridge, what is the effect of temperature on the resistors?
  • A. It has no effect
  • B. It can change resistance values
  • C. It only affects the galvanometer
  • D. It only affects the power supply
Q. In a practical Wheatstone bridge, what is the effect of temperature on the resistances?
  • A. Resistances remain constant
  • B. Resistances increase with temperature
  • C. Resistances decrease with temperature
  • D. Temperature has no effect
Q. In a practical Wheatstone bridge, what is the main source of error?
  • A. Temperature variations
  • B. Resistance of the connecting wires
  • C. Calibration of the galvanometer
  • D. Non-ideal resistors
Q. In a prism, if the angle of incidence is equal to the angle of emergence, what can be said about the angle of deviation?
  • A. It is zero
  • B. It is equal to the angle of incidence
  • C. It is equal to the angle of emergence
  • D. It is equal to the angle of the prism
Q. In a prism, if the angle of the prism is 60 degrees, what is the minimum angle of deviation for light passing through it?
  • A. 30 degrees
  • B. 60 degrees
  • C. 90 degrees
  • D. 45 degrees
Q. In a process where 100 J of heat is added to a system and the internal energy increases by 40 J, how much work is done by the system?
  • A. 60 J
  • B. 40 J
  • C. 100 J
  • D. 140 J
Q. In a process where 300 J of heat is added to a system and the internal energy increases by 100 J, how much work is done by the system?
  • A. 200 J
  • B. 100 J
  • C. 300 J
  • D. 400 J
Q. In a process where 300 J of heat is added to a system and the system does 100 J of work, what is the change in internal energy?
  • A. 200 J
  • B. 100 J
  • C. 300 J
  • D. 400 J
Q. In a process where 300 J of heat is added to a system and the system does 100 J of work, what is the internal energy change?
  • A. 200 J
  • B. 300 J
  • C. 100 J
  • D. 400 J
Q. In a reaction A → B, if the concentration of A decreases from 0.5 M to 0.1 M in 20 minutes, what is the average rate of reaction?
  • A. 0.02 M/min
  • B. 0.04 M/min
  • C. 0.05 M/min
  • D. 0.06 M/min
Q. In a reaction A → B, if the rate of formation of B is 0.1 mol/L·s, what is the rate of disappearance of A?
  • A. 0.1 mol/L·s
  • B. 0.05 mol/L·s
  • C. 0.2 mol/L·s
  • D. 0.1 L/mol·s
Q. In a reaction A → B, if the rate of formation of B is 0.5 mol/L·s, what is the rate of disappearance of A?
  • A. 0.5 mol/L·s
  • B. 1.0 mol/L·s
  • C. 0.25 mol/L·s
  • D. 0.75 mol/L·s
Q. In a reaction A → B, if the rate of reaction doubles when the concentration of A is doubled, what is the order of the reaction with respect to A?
  • A. Zero order
  • B. First order
  • C. Second order
  • D. Third order
Q. In a reaction at equilibrium, if the concentration of a reactant is decreased, what will happen?
  • A. Shift to the right
  • B. Shift to the left
  • C. No change
  • D. Increase the rate of reaction
Q. In a reaction at equilibrium, if the concentration of products increases, what will happen to the equilibrium position?
  • A. Shift to the left
  • B. Shift to the right
  • C. No change
  • D. Depends on temperature
Q. In a reaction at equilibrium, if the concentration of products is decreased, what will happen?
  • A. Shift to the right
  • B. Shift to the left
  • C. No change
  • D. Depends on the temperature
Q. In a reaction at equilibrium, if the concentration of reactants is increased, what will happen to the equilibrium?
  • A. Shift to the right
  • B. Shift to the left
  • C. No change
  • D. Equilibrium constant increases
Q. In a reaction at equilibrium, if the concentration of reactants is increased, what will happen to the equilibrium position?
  • A. Shift to the right
  • B. Shift to the left
  • C. No change
  • D. Depends on the reaction
Q. In a reaction at equilibrium, if the temperature is decreased, what will happen to the equilibrium position if the reaction is exothermic?
  • A. Shift to the right
  • B. Shift to the left
  • C. No change
  • D. Depends on the concentration
Q. In a reaction at equilibrium, if the temperature is increased and the reaction is exothermic, what will happen to the equilibrium position?
  • A. Shift to the right
  • B. Shift to the left
  • C. No change
  • D. Equilibrium constant increases
Q. In a reaction at equilibrium, if the temperature is increased, what will happen to the equilibrium constant Kc for an endothermic reaction?
  • A. Increase
  • B. Decrease
  • C. No change
  • D. Depends on concentration
Q. In a reaction mechanism, the slowest step is known as the:
  • A. Rate-determining step
  • B. Intermediate step
  • C. Fast step
  • D. Catalytic step
Q. In a reaction mechanism, the slowest step is known as what?
  • A. Rate-determining step
  • B. Intermediate step
  • C. Fast step
  • D. Catalytic step
Q. In a reaction where 2 moles of hydrogen react with 1 mole of oxygen, how many moles of water are produced?
  • A. 1 mole
  • B. 2 moles
  • C. 3 moles
  • D. 4 moles
Q. In a reaction where ΔH is negative and ΔS is positive, what can be said about ΔG?
  • A. ΔG is always negative.
  • B. ΔG is always positive.
  • C. ΔG is zero.
  • D. ΔG depends on temperature.
Q. In a reaction where ΔH is positive and ΔS is negative, what is the sign of ΔG at high temperatures?
  • A. Positive
  • B. Negative
  • C. Zero
  • D. Cannot be determined
Q. In a reaction, 3 moles of A react with 2 moles of B to produce 4 moles of C. What is the mole ratio of A to C?
  • A. 3:4
  • B. 2:3
  • C. 4:3
  • D. 1:1
Q. In a reaction, if the enthalpy change (ΔH) is -100 kJ and the entropy change (ΔS) is 200 J/K, what is the Gibbs free energy change (ΔG) at 298 K?
  • A. -100 kJ
  • B. -50 kJ
  • C. 0 kJ
  • D. 50 kJ
Showing 4801 to 4830 of 10700 (357 Pages)
Soulshift Feedback ×

On a scale of 0–10, how likely are you to recommend The Soulshift Academy?

Not likely Very likely