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 materials has the highest thermal resistance?
A.
Copper
B.
Aluminum
C.
Glass Wool
D.
Steel
Show solution
Solution
Glass Wool has the highest thermal resistance among the given materials, making it a good insulator.
Correct Answer:
C
— Glass Wool
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Q. Which of the following materials has the highest Young's modulus?
A.
Rubber
B.
Steel
C.
Wood
D.
Plastic
Show solution
Solution
Steel has a much higher Young's modulus compared to rubber, wood, and plastic, indicating it is much stiffer.
Correct Answer:
B
— Steel
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Q. Which of the following materials is commonly used as a p-type semiconductor?
A.
Silicon
B.
Germanium
C.
Gallium Arsenide
D.
Boron-doped Silicon
Show solution
Solution
Boron-doped Silicon is a common p-type semiconductor as boron creates holes in the silicon lattice.
Correct Answer:
D
— Boron-doped Silicon
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Q. Which of the following materials is commonly used as a semiconductor?
A.
Copper
B.
Silicon
C.
Aluminum
D.
Iron
Show solution
Solution
Silicon is widely used as a semiconductor material due to its suitable band gap and availability.
Correct Answer:
B
— Silicon
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Q. Which of the following materials is commonly used for potentiometer wires?
A.
Copper
B.
Aluminum
C.
Constantan
D.
Silver
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Solution
Constantan is commonly used for potentiometer wires due to its stable resistance over a range of temperatures.
Correct Answer:
C
— Constantan
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Q. Which of the following materials is commonly used for the wire in a potentiometer?
A.
Copper
B.
Aluminum
C.
Constantan
D.
Silver
Show solution
Solution
Constantan is commonly used for potentiometer wires due to its stable resistance over a range of temperatures.
Correct Answer:
C
— Constantan
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Q. Which of the following materials is commonly used in polarizers?
A.
Glass
B.
Plastic
C.
Polaroid
D.
Water
Show solution
Solution
Polaroid is a material specifically designed to polarize light.
Correct Answer:
C
— Polaroid
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Q. Which of the following materials is known to exhibit polarization?
A.
Glass
B.
Water
C.
Air
D.
Vacuum
Show solution
Solution
Glass can exhibit polarization when light reflects off its surface.
Correct Answer:
A
— Glass
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Q. Which of the following materials is most likely to exhibit elastic behavior?
A.
Rubber
B.
Glass
C.
Steel
D.
Plastic
Show solution
Solution
Steel is known for its elastic properties, allowing it to return to its original shape after deformation.
Correct Answer:
C
— Steel
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Q. Which of the following materials is the best conductor of heat?
A.
Wood
B.
Air
C.
Copper
D.
Glass
Show solution
Solution
Copper is known for its excellent thermal conductivity, making it the best conductor among the given options.
Correct Answer:
C
— Copper
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Q. Which of the following materials is typically a good conductor of electricity?
A.
Rubber
B.
Copper
C.
Glass
D.
Wood
Show solution
Solution
Copper is a good conductor of electricity, while rubber, glass, and wood are insulators.
Correct Answer:
B
— Copper
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Q. Which of the following materials transmits sound the fastest?
A.
Air
B.
Water
C.
Steel
D.
Wood
Show solution
Solution
Sound travels fastest in solids like steel due to closely packed molecules.
Correct Answer:
C
— Steel
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Q. Which of the following materials typically has the highest Young's modulus?
A.
Rubber
B.
Steel
C.
Wood
D.
Plastic
Show solution
Solution
Steel typically has a much higher Young's modulus compared to rubber, wood, and plastic.
Correct Answer:
B
— Steel
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Q. Which of the following materials would have the highest Young's modulus?
A.
Rubber
B.
Steel
C.
Wood
D.
Plastic
Show solution
Solution
Steel has a much higher Young's modulus compared to rubber, wood, and plastic, indicating it is much stiffer.
Correct Answer:
B
— Steel
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Q. Which of the following measures is NOT a measure of dispersion?
A.
Range
B.
Variance
C.
Mean
D.
Standard Deviation
Show solution
Solution
Mean is a measure of central tendency, not dispersion.
Correct Answer:
C
— Mean
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Q. Which of the following measures of dispersion is affected by extreme values?
A.
Range
B.
Interquartile Range
C.
Variance
D.
Standard Deviation
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Solution
Range is affected by extreme values as it is calculated as the difference between the maximum and minimum values.
Correct Answer:
A
— Range
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Q. Which of the following metals can be used as an anode in a Daniell cell?
A.
Copper
B.
Zinc
C.
Silver
D.
Lead
Show solution
Solution
Zinc is used as the anode in a Daniell cell.
Correct Answer:
B
— Zinc
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Q. Which of the following metals can be used as an anode in electrolysis?
A.
Copper
B.
Gold
C.
Aluminum
D.
Silver
Show solution
Solution
Aluminum is commonly used as an anode in electrolysis due to its high reactivity.
Correct Answer:
C
— Aluminum
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Q. Which of the following metals cannot be used as an anode in a galvanic cell?
A.
Zinc
B.
Copper
C.
Lead
D.
Silver
Show solution
Solution
Copper cannot be used as an anode in a galvanic cell because it is less reactive than zinc.
Correct Answer:
B
— Copper
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Q. Which of the following molecular orbitals is filled first according to the Aufbau principle?
A.
σ1s
B.
σ*1s
C.
π2p
D.
σ2p
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Solution
According to the Aufbau principle, the σ1s molecular orbital is filled first as it has the lowest energy.
Correct Answer:
A
— σ1s
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Q. Which of the following molecular orbitals is lower in energy than the 2p atomic orbitals?
A.
σ2s
B.
σ*2s
C.
π2p
D.
σ2p
Show solution
Solution
σ2s is lower in energy than the 2p atomic orbitals.
Correct Answer:
A
— σ2s
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Q. Which of the following molecules exhibits resonance?
A.
H2O
B.
CO2
C.
O3
D.
CH4
Show solution
Solution
Ozone (O3) exhibits resonance due to the delocalization of electrons.
Correct Answer:
C
— O3
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Q. Which of the following molecules has a bent shape according to VSEPR theory?
A.
CO2
B.
H2O
C.
NH3
D.
CH4
Show solution
Solution
H2O has two bonding pairs and two lone pairs, leading to a bent molecular geometry.
Correct Answer:
B
— H2O
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Q. Which of the following molecules has a bent shape?
A.
CO2
B.
H2O
C.
NH3
D.
CH4
Show solution
Solution
H2O has two bonding pairs and two lone pairs, leading to a bent molecular geometry.
Correct Answer:
B
— H2O
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Q. Which of the following molecules has a bond order of 1?
A.
H2
B.
He2
C.
Li2
D.
B2
Show solution
Solution
Li2 has a bond order of 1, calculated as (2 bonding electrons - 0 antibonding electrons)/2 = 1.
Correct Answer:
C
— Li2
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Q. Which of the following molecules has a bond order of 2?
Show solution
Solution
N2 has a bond order of 2, calculated as (number of bonding electrons - number of antibonding electrons)/2 = (10-6)/2 = 2.
Correct Answer:
B
— N2
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Q. Which of the following molecules has a higher bond order than N2?
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Solution
O2 has a bond order of 2, while N2 has a bond order of 3, so none have a higher bond order than N2.
Correct Answer:
A
— O2
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Q. Which of the following molecules has a higher bond order: N2 or O2?
A.
N2
B.
O2
C.
Both are equal
D.
Cannot be determined
Show solution
Solution
N2 has a bond order of 3, while O2 has a bond order of 2, so N2 has a higher bond order.
Correct Answer:
A
— N2
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Q. Which of the following molecules has a linear shape?
A.
CH4
B.
H2O
C.
CO2
D.
NH3
Show solution
Solution
CO2 has a linear shape due to the arrangement of its double bonds.
Correct Answer:
C
— CO2
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Q. Which of the following molecules has a trigonal bipyramidal geometry?
A.
NH3
B.
PCl5
C.
H2O
D.
CO2
Show solution
Solution
PCl5 has five bonding pairs and no lone pairs, leading to a trigonal bipyramidal geometry.
Correct Answer:
B
— PCl5
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