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 is NOT a type of stress?
A.
Tensile stress
B.
Compressive stress
C.
Shear stress
D.
Thermal stress
Show solution
Solution
Thermal stress is a result of temperature changes, while tensile, compressive, and shear stresses are types of mechanical stress.
Correct Answer:
D
— Thermal stress
Learn More →
Q. Which of the following is NOT a unit of power?
A.
Horsepower
B.
Kilowatt
C.
Joule
D.
Watt
Show solution
Solution
Joule is a unit of energy, not power. Power is measured in Watts, Kilowatts, and Horsepower.
Correct Answer:
C
— Joule
Learn More →
Q. Which of the following is NOT a use of a potentiometer?
A.
Measuring emf of a cell.
B.
Comparing emf of two cells.
C.
Measuring resistance directly.
D.
Calibrating voltmeters.
Show solution
Solution
A potentiometer is not used for direct resistance measurement; it is primarily used for voltage measurements.
Correct Answer:
C
— Measuring resistance directly.
Learn More →
Q. Which of the following is not an alkali metal?
A.
Lithium
B.
Sodium
C.
Calcium
D.
Potassium
Show solution
Solution
Calcium is not an alkali metal; it is an alkaline earth metal.
Correct Answer:
C
— Calcium
Learn More →
Q. Which of the following is NOT an aromatic compound?
A.
Naphthalene
B.
Benzene
C.
Cyclooctatetraene
D.
Anthracene
Show solution
Solution
Cyclooctatetraene is not aromatic because it does not satisfy Huckel's rule; it is non-planar and does not have a continuous overlap of p-orbitals.
Correct Answer:
C
— Cyclooctatetraene
Learn More →
Q. Which of the following is not an assumption of the kinetic molecular theory?
A.
Gas particles are in constant motion
B.
Gas particles have no volume
C.
Gas particles attract each other
D.
Collisions between gas particles are elastic
Show solution
Solution
The kinetic molecular theory assumes that gas particles do not attract or repel each other.
Correct Answer:
C
— Gas particles attract each other
Learn More →
Q. Which of the following is not an s-block element?
A.
Calcium
B.
Barium
C.
Magnesium
D.
Aluminum
Show solution
Solution
Aluminum is not an s-block element; it is a p-block element.
Correct Answer:
D
— Aluminum
Learn More →
Q. Which of the following is not continuous at x = 0?
A.
f(x) = x^3
B.
f(x) = e^x
C.
f(x) = 1/x
D.
f(x) = ln(x)
Show solution
Solution
f(x) = 1/x is not continuous at x = 0 as it is undefined there.
Correct Answer:
C
— f(x) = 1/x
Learn More →
Q. Which of the following is the best conductor of heat?
A.
Air
B.
Water
C.
Copper
D.
Wood
Show solution
Solution
Copper is known to be one of the best conductors of heat among the given options.
Correct Answer:
C
— Copper
Learn More →
Q. Which of the following is the correct conversion factor from kilometers to meters?
A.
1000
B.
0.1
C.
0.001
D.
10
Show solution
Solution
1 kilometer is equal to 1000 meters, hence the conversion factor is 1000.
Correct Answer:
A
— 1000
Learn More →
Q. Which of the following is the correct conversion of 1 kilometer to meters?
A.
100 m
B.
1000 m
C.
10 m
D.
0.1 m
Show solution
Solution
1 kilometer is equal to 1000 meters.
Correct Answer:
B
— 1000 m
Learn More →
Q. Which of the following is the correct conversion of 1 km to meters?
A.
100 m
B.
1000 m
C.
10 m
D.
0.1 m
Show solution
Solution
1 kilometer is equal to 1000 meters.
Correct Answer:
B
— 1000 m
Learn More →
Q. Which of the following is the correct dimensional formula for electric charge?
A.
[M^1 L^2 T^-3 A^-1]
B.
[M^0 L^0 T^0 A^1]
C.
[M^0 L^1 T^-2 A^1]
D.
[M^1 L^1 T^-2 A^-1]
Show solution
Solution
The dimensional formula for electric charge is [M^1 L^2 T^-3 A^-1], derived from the definition of current.
Correct Answer:
A
— [M^1 L^2 T^-3 A^-1]
Learn More →
Q. Which of the following is the correct expression for the van der Waals equation?
A.
(P + a(n/V)^2)(V - nb) = nRT
B.
(P - a(n/V)^2)(V + nb) = nRT
C.
PV = nRT + a(n/V)^2
D.
PV = nRT - nb
Show solution
Solution
The van der Waals equation is (P + a(n/V)^2)(V - nb) = nRT.
Correct Answer:
A
— (P + a(n/V)^2)(V - nb) = nRT
Learn More →
Q. Which of the following is the correct formula for ethyne?
A.
C2H2
B.
C2H4
C.
C2H6
D.
C2H8
Show solution
Solution
Ethyne, also known as acetylene, has the formula C2H2, which indicates it is an alkyne.
Correct Answer:
A
— C2H2
Learn More →
Q. Which of the following is the correct identity for sin(2A)?
A.
2sinAcosA
B.
sin^2A + cos^2A
C.
sinA + cosA
D.
sinAcosA
Show solution
Solution
The double angle formula states that sin(2A) = 2sinAcosA.
Correct Answer:
A
— 2sinAcosA
Learn More →
Q. Which of the following is the correct IUPAC name for C2H5-CO-CH3?
A.
2-Pentanone
B.
3-Pentanone
C.
Butan-2-one
D.
Butan-3-one
Show solution
Solution
The compound is a ketone with a four-carbon chain, and the carbonyl group is on the second carbon, hence it is Butan-2-one.
Correct Answer:
C
— Butan-2-one
Learn More →
Q. Which of the following is the correct IUPAC name for C3H6?
A.
Propene
B.
Cyclopropane
C.
Propane
D.
1-Propyn
Show solution
Solution
C3H6 corresponds to propene, which is an alkene with a double bond.
Correct Answer:
A
— Propene
Learn More →
Q. Which of the following is the correct IUPAC name for C3H7-COOH?
A.
Propanoic acid
B.
Butanoic acid
C.
Pentanoic acid
D.
Hexanoic acid
Show solution
Solution
The compound has 3 carbons in the longest chain and a carboxylic acid group, hence it is Propanoic acid.
Correct Answer:
A
— Propanoic acid
Learn More →
Q. Which of the following is the correct IUPAC name for C5H10?
A.
Pentane
B.
Cyclopentane
C.
1-Pentene
D.
2-Pentene
Show solution
Solution
C5H10 corresponds to pentane, which is a straight-chain alkane with 5 carbon atoms.
Correct Answer:
A
— Pentane
Learn More →
Q. Which of the following is the correct IUPAC name for C6H12?
A.
Hexane
B.
Cyclohexane
C.
2-Hexene
D.
1-Hexyne
Show solution
Solution
C6H12 is a straight-chain alkane with 6 carbons, which is named Hexane.
Correct Answer:
A
— Hexane
Learn More →
Q. Which of the following is the correct IUPAC name for C6H5-CH2-CH2-COOH?
A.
Phenylbutanoic acid
B.
Butylbenzoic acid
C.
Benzoic acid
D.
Phenylpropanoic acid
Show solution
Solution
The compound has a phenyl group attached to a butanoic acid structure, making it Phenylbutanoic acid.
Correct Answer:
A
— Phenylbutanoic acid
Learn More →
Q. Which of the following is the correct IUPAC name for C6H5-CH2-CH3?
A.
Ethylbenzene
B.
Phenylpropane
C.
Benzyl ethane
D.
Benzene ethyl
Show solution
Solution
The compound has a phenyl group attached to an ethyl group, making it Ethylbenzene.
Correct Answer:
A
— Ethylbenzene
Learn More →
Q. Which of the following is the correct IUPAC name for CH3-CH2-CH(CH3)-CH2-CH3?
A.
2-Pentene
B.
3-Pentene
C.
2-Methylbutane
D.
3-Methylbutane
Show solution
Solution
The longest carbon chain has 5 carbons, and there is a methyl group on the second carbon, making it 2-Methylbutane.
Correct Answer:
C
— 2-Methylbutane
Learn More →
Q. Which of the following is the correct IUPAC name for CH3-CH2-CH(CH3)-OH?
A.
2-Methylpropan-1-ol
B.
3-Methylbutan-1-ol
C.
2-Methylbutan-1-ol
D.
3-Methylpropan-1-ol
Show solution
Solution
The longest chain has four carbons, and the hydroxyl group is on the first carbon, with a methyl group on the second carbon, making it 2-Methylbutan-1-ol.
Correct Answer:
C
— 2-Methylbutan-1-ol
Learn More →
Q. Which of the following is the correct IUPAC name for CH3CH2CH2OH?
A.
Propan-1-ol
B.
Butan-1-ol
C.
Butan-2-ol
D.
Pentan-1-ol
Show solution
Solution
The correct IUPAC name for CH3CH2CH2OH is Butan-1-ol, as it has four carbon atoms with the hydroxyl group on the first carbon.
Correct Answer:
B
— Butan-1-ol
Learn More →
Q. Which of the following is the correct IUPAC name for CH3CHO?
A.
Ethanal
B.
Propanal
C.
Butanal
D.
Methanal
Show solution
Solution
The correct IUPAC name for CH3CHO is Ethanal.
Correct Answer:
A
— Ethanal
Learn More →
Q. Which of the following is the correct IUPAC name for CH3COOH?
A.
Methanoic acid
B.
Ethanoic acid
C.
Propanoic acid
D.
Butanoic acid
Show solution
Solution
The compound CH3COOH is known as Ethanoic acid, which is the IUPAC name for acetic acid.
Correct Answer:
B
— Ethanoic acid
Learn More →
Q. Which of the following is the correct IUPAC name for the compound C2H5-CHO?
A.
Ethanal
B.
Propanoic acid
C.
Acetaldehyde
D.
Ethyl aldehyde
Show solution
Solution
The compound is an aldehyde with two carbons, hence the IUPAC name is Ethanal.
Correct Answer:
A
— Ethanal
Learn More →
Q. Which of the following is the correct IUPAC name for the compound C3H6O?
A.
Propylene oxide
B.
Acetone
C.
Propanal
D.
Cyclopropanol
Show solution
Solution
C3H6O can be identified as Propanal, which is an aldehyde with three carbons.
Correct Answer:
C
— Propanal
Learn More →
Showing 9961 to 9990 of 10700 (357 Pages)
