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 main effect of heavy metal pollution in water bodies?
  • A. Increased biodiversity
  • B. Eutrophication
  • C. Bioaccumulation
  • D. Oxygenation
Q. What is the main environmental concern associated with the use of chlorofluorocarbons (CFCs)?
  • A. Ozone layer depletion
  • B. Global warming
  • C. Acid rain
  • D. Water pollution
Q. What is the main feature of a primary alcohol?
  • A. The hydroxyl group is attached to a carbon with one alkyl group
  • B. The hydroxyl group is attached to a carbon with two alkyl groups
  • C. The hydroxyl group is attached to a carbon with three alkyl groups
  • D. The hydroxyl group is attached to a carbon in a ring
Q. What is the main feature of addition polymerization?
  • A. Involves the loss of small molecules
  • B. Involves the addition of monomers without by-products
  • C. Requires a catalyst
  • D. Involves the formation of cross-linked structures
Q. What is the main feature of addition polymers?
  • A. They release small molecules during polymerization
  • B. They are formed from monomers with double bonds
  • C. They have a high degree of crystallinity
  • D. They are always biodegradable
Q. What is the main feature of aromatic compounds?
  • A. Presence of double bonds
  • B. Presence of a benzene ring
  • C. Presence of hydroxyl groups
  • D. Presence of carboxylic groups
Q. What is the main feature of condensation polymerization?
  • A. It produces small molecules as byproducts
  • B. It requires high temperatures
  • C. It involves ionic bonds
  • D. It is a reversible reaction
Q. What is the main feature of elastomers?
  • A. High tensile strength
  • B. Elasticity
  • C. Brittleness
  • D. Thermal stability
Q. What is the main feature of terminal alkynes?
  • A. They have a triple bond in the middle
  • B. They can form carbanions
  • C. They are less acidic than alkenes
  • D. They cannot undergo substitution reactions
Q. What is the main feature that distinguishes alkynes from alkenes?
  • A. Presence of double bonds
  • B. Presence of triple bonds
  • C. Saturation
  • D. Molecular weight
Q. What is the main function of a salt bridge in a galvanic cell?
  • A. To provide a path for electrons
  • B. To maintain charge balance
  • C. To increase voltage
  • D. To decrease resistance
Q. What is the main function of carbohydrates in living organisms?
  • A. Genetic information
  • B. Energy storage
  • C. Catalysis
  • D. Structural support
Q. What is the main function of lipids in biological systems?
  • A. Energy storage
  • B. Genetic information
  • C. Catalysis
  • D. Structural support
Q. What is the main industrial method for producing hydrogen?
  • A. Electrolysis of water
  • B. Steam reforming of natural gas
  • C. Thermal decomposition of water
  • D. Photosynthesis
Q. What is the main ingredient in most sunscreens?
  • A. Zinc oxide
  • B. Vitamin E
  • C. Aloe vera
  • D. Coconut oil
Q. What is the main ingredient in vinegar that gives it its sour taste?
  • A. Acetic acid
  • B. Citric acid
  • C. Lactic acid
  • D. Formic acid
Q. What is the main ingredient in vinegar?
  • A. Acetic acid
  • B. Citric acid
  • C. Lactic acid
  • D. Formic acid
Q. What is the main mechanism of heat transfer in liquids and gases?
  • A. Conduction
  • B. Convection
  • C. Radiation
  • D. Insulation
Q. What is the main mechanism of heat transfer in liquids?
  • A. Conduction
  • B. Convection
  • C. Radiation
  • D. Insulation
Q. What is the main monomer used to produce polyethylene?
  • A. Propylene
  • B. Ethylene
  • C. Butylene
  • D. Styrene
Q. What is the main product of nuclear fusion in stars?
  • A. Helium
  • B. Hydrogen
  • C. Carbon
  • D. Iron
Q. What is the main product of the complete combustion of alkanes?
  • A. Carbon monoxide
  • B. Carbon dioxide
  • C. Water
  • D. Oxygen
Q. What is the main product of the complete combustion of hydrocarbons?
  • A. Carbon monoxide
  • B. Water
  • C. Carbon dioxide
  • D. Hydrogen gas
Q. What is the main product of the complete combustion of propane (C3H8)?
  • A. Carbon monoxide
  • B. Carbon dioxide and water
  • C. Soot
  • D. Hydrogen gas
Q. What is the main product of the dehydration of an alcohol?
  • A. Alkene
  • B. Alkane
  • C. Aldehyde
  • D. Ketone
Q. What is the main product of the dehydration of ethanol?
  • A. Ethylene
  • B. Acetaldehyde
  • C. Ethane
  • D. Diethyl ether
Q. What is the main product of the electrolysis of water?
  • A. Hydrogen gas
  • B. Oxygen gas
  • C. Hydrochloric acid
  • D. Hydrogen peroxide
Q. What is the main product of the hydrogenation of benzene?
  • A. Cyclohexane
  • B. Toluene
  • C. Phenol
  • D. Benzaldehyde
Q. What is the main product of the hydrolysis of an ester?
  • A. Alcohol
  • B. Carboxylic acid
  • C. Alkene
  • D. Ketone
Q. What is the main product of the nitration of benzene?
  • A. Nitrobenzene
  • B. Benzene-1,2-diol
  • C. Benzaldehyde
  • D. Benzyl alcohol
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