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. Which of the following configurations will produce a magnetic field that is uniform in space?
A.
A long straight wire
B.
A circular loop of wire
C.
Two parallel wires carrying current in the same direction
D.
A solenoid
Show solution
Solution
A solenoid produces a uniform magnetic field in its interior, as described by the Biot-Savart Law.
Correct Answer:
D
— A solenoid
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Q. Which of the following configurations will produce a uniform magnetic field using the Biot-Savart Law?
A.
A straight wire
B.
A circular loop
C.
A solenoid
D.
A single current element
Show solution
Solution
A solenoid produces a uniform magnetic field inside it, as described by the Biot-Savart Law.
Correct Answer:
C
— A solenoid
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Q. Which of the following configurations will produce the strongest magnetic field at the center?
A.
A single straight wire
B.
A circular loop of wire
C.
A solenoid
D.
A toroid
Show solution
Solution
A toroid produces the strongest magnetic field at its center due to the closed loop configuration of the wire.
Correct Answer:
D
— A toroid
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Q. Which of the following correctly describes gravitational field lines?
A.
They point away from the mass.
B.
They are always straight lines.
C.
They never intersect.
D.
They can be closed loops.
Show solution
Solution
Gravitational field lines never intersect because it would imply two different gravitational forces acting on the same point.
Correct Answer:
C
— They never intersect.
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Q. Which of the following correctly describes gravitational potential energy?
A.
It is a scalar quantity.
B.
It is a vector quantity.
C.
It can be negative.
D.
Both A and C.
Show solution
Solution
Gravitational potential energy is a scalar quantity and can be negative when the object is within the gravitational field of another mass.
Correct Answer:
D
— Both A and C.
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Q. Which of the following correctly describes the gravitational field strength at a distance r from a mass M?
A.
g = GM/r
B.
g = GM/r²
C.
g = Gm/r²
D.
g = Gm/r
Show solution
Solution
The gravitational field strength (g) at a distance r from a mass M is given by g = GM/r².
Correct Answer:
B
— g = GM/r²
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Q. Which of the following correctly describes the gravitational force between two objects?
A.
It depends on the medium between them
B.
It is independent of the distance between them
C.
It is proportional to the product of their masses
D.
It can be shielded by other masses
Show solution
Solution
The gravitational force is proportional to the product of the masses of the two objects.
Correct Answer:
C
— It is proportional to the product of their masses
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Q. Which of the following correctly describes the gravitational force?
A.
It is always attractive
B.
It can be repulsive
C.
It acts only at short distances
D.
It is stronger than electromagnetic force
Show solution
Solution
The gravitational force is always attractive and acts over long distances, though it is weaker than the electromagnetic force.
Correct Answer:
A
— It is always attractive
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Q. Which of the following correctly describes the relationship between gravitational potential and gravitational field?
A.
Potential is the derivative of field.
B.
Field is the derivative of potential.
C.
Both are independent.
D.
They are equal.
Show solution
Solution
The gravitational field is the negative gradient of gravitational potential.
Correct Answer:
B
— Field is the derivative of potential.
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Q. Which of the following d-block elements has the highest atomic radius?
A.
Scandium
B.
Titanium
C.
Vanadium
D.
Chromium
Show solution
Solution
Scandium has the highest atomic radius among the given d-block elements.
Correct Answer:
A
— Scandium
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Q. Which of the following d-block elements is a liquid at room temperature?
A.
Mercury (Hg)
B.
Gold (Au)
C.
Platinum (Pt)
D.
Silver (Ag)
Show solution
Solution
Mercury (Hg) is the only metal that is liquid at room temperature.
Correct Answer:
A
— Mercury (Hg)
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Q. Which of the following describes circular polarization?
A.
Waves oscillate in a straight line
B.
Waves oscillate in a plane at a constant angle
C.
Waves rotate in a circular motion as they propagate
D.
Waves are randomly oriented
Show solution
Solution
In circular polarization, the electric field vector rotates in a circular motion as the wave propagates.
Correct Answer:
C
— Waves rotate in a circular motion as they propagate
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Q. Which of the following describes overdamped oscillations?
A.
System oscillates with decreasing amplitude
B.
System returns to equilibrium without oscillating
C.
System oscillates indefinitely
D.
System oscillates with constant amplitude
Show solution
Solution
In overdamped oscillations, the system returns to equilibrium without oscillating due to strong damping.
Correct Answer:
B
— System returns to equilibrium without oscillating
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Q. Which of the following describes Poisson's ratio?
A.
Lateral strain / Longitudinal strain
B.
Longitudinal strain / Lateral strain
C.
Stress / Strain
D.
Strain / Stress
Show solution
Solution
Poisson's ratio (ν) is defined as the ratio of lateral strain to longitudinal strain.
Correct Answer:
A
— Lateral strain / Longitudinal strain
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Q. Which of the following describes the behavior of a Zener diode?
A.
Acts as a regular diode
B.
Allows current to flow in both directions
C.
Maintains a constant voltage
D.
Has no breakdown voltage
Show solution
Solution
A Zener diode is designed to maintain a constant voltage across it when reverse-biased, allowing it to regulate voltage.
Correct Answer:
C
— Maintains a constant voltage
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Q. Which of the following describes the behavior of gases?
A.
They have a definite shape
B.
They have a definite volume
C.
They expand to fill their container
D.
They are incompressible
Show solution
Solution
Gases have no definite shape or volume and will expand to fill the entire volume of their container.
Correct Answer:
C
— They expand to fill their container
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Q. Which of the following describes the Doppler effect?
A.
Change in frequency due to motion
B.
Change in amplitude due to distance
C.
Change in speed due to temperature
D.
Change in wavelength due to pressure
Show solution
Solution
The Doppler effect refers to the change in frequency of a wave in relation to an observer moving relative to the wave source.
Correct Answer:
A
— Change in frequency due to motion
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Q. Which of the following describes the motion of a damped oscillator mathematically?
A.
x(t) = A cos(ωt)
B.
x(t) = A e^(-bt) cos(ωt)
C.
x(t) = A sin(ωt)
D.
x(t) = A e^(bt) cos(ωt)
Show solution
Solution
The motion of a damped oscillator is described by x(t) = A e^(-bt) cos(ωt), where b is the damping coefficient.
Correct Answer:
B
— x(t) = A e^(-bt) cos(ωt)
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Q. Which of the following describes the motion of a damped oscillator?
A.
Simple harmonic motion
B.
Exponential decay
C.
Linear motion
D.
Circular motion
Show solution
Solution
The motion of a damped oscillator is characterized by exponential decay of amplitude over time.
Correct Answer:
B
— Exponential decay
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Q. Which of the following describes the motion of a system undergoing overdamping?
A.
Returns to equilibrium position quickly
B.
Oscillates with decreasing amplitude
C.
Returns to equilibrium position slowly without oscillating
D.
Oscillates indefinitely
Show solution
Solution
In overdamping, the system returns to the equilibrium position slowly without oscillating.
Correct Answer:
C
— Returns to equilibrium position slowly without oscillating
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Q. Which of the following describes the polarization of light?
A.
Light waves oscillate in all directions
B.
Light waves oscillate in a single plane
C.
Light waves oscillate in a circular motion
D.
Light waves do not oscillate
Show solution
Solution
Polarization of light refers to the phenomenon where light waves oscillate in a single plane.
Correct Answer:
B
— Light waves oscillate in a single plane
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Q. Which of the following describes the relationship between frequency and pitch?
A.
Higher frequency means lower pitch
B.
Lower frequency means higher pitch
C.
Higher frequency means higher pitch
D.
Frequency has no effect on pitch
Show solution
Solution
Higher frequency corresponds to a higher pitch in sound.
Correct Answer:
C
— Higher frequency means higher pitch
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Q. Which of the following describes viscosity?
A.
Resistance to flow
B.
Density of a fluid
C.
Surface tension
D.
Pressure exerted by a fluid
Show solution
Solution
Viscosity is a measure of a fluid's resistance to flow.
Correct Answer:
A
— Resistance to flow
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Q. Which of the following devices is based on the principle of semiconductors?
A.
Transformer
B.
Capacitor
C.
Transistor
D.
Inductor
Show solution
Solution
A transistor is a semiconductor device that can amplify or switch electronic signals and electrical power.
Correct Answer:
C
— Transistor
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Q. Which of the following diatomic molecules has a bond order of 1?
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Solution
H2 has a bond order of 1, calculated as (2 bonding electrons - 0 antibonding electrons)/2 = 1.
Correct Answer:
C
— H2
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Q. Which of the following diatomic molecules has the highest bond order?
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Solution
N2 has the highest bond order of 3, while O2 has a bond order of 2 and F2 has a bond order of 1.
Correct Answer:
A
— N2
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Q. Which of the following elements can act as a reducing agent?
A.
Cl2
B.
H2O
C.
Na
D.
O2
Show solution
Solution
Sodium (Na) can act as a reducing agent as it can donate electrons.
Correct Answer:
C
— Na
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Q. Which of the following elements can form a coordinate bond?
A.
Oxygen
B.
Nitrogen
C.
Carbon
D.
All of the above
Show solution
Solution
All of the listed elements can form coordinate bonds by donating a lone pair of electrons.
Correct Answer:
D
— All of the above
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Q. Which of the following elements can form a stable +4 oxidation state?
A.
Carbon
B.
Silicon
C.
Germanium
D.
Tin
Show solution
Solution
Tin can form a stable +4 oxidation state.
Correct Answer:
D
— Tin
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Q. Which of the following elements can form multiple bonds?
A.
Sodium
B.
Carbon
C.
Bromine
D.
Neon
Show solution
Solution
Carbon can form multiple bonds (double and triple bonds) due to its ability to hybridize and share electrons.
Correct Answer:
B
— Carbon
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