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 product when hydrogen reacts with nitrogen at high temperatures?
  • A. Ammonia
  • B. Hydrazine
  • C. Nitric oxide
  • D. Nitrogen gas
Q. What is the main product when phenol is treated with bromine water?
  • A. Bromobenzene
  • B. 2,4,6-Tribromophenol
  • C. Bromophenol
  • D. Benzene
Q. What is the main product when phenol is treated with zinc dust?
  • A. Benzene
  • B. Cyclohexanol
  • C. Toluene
  • D. Phenyl ether
Q. What is the main product when phenol reacts with bromine water?
  • A. Bromobenzene
  • B. 2,4,6-tribromophenol
  • C. Bromophenol
  • D. Benzene
Q. What is the main product when phenol reacts with concentrated sulfuric acid?
  • A. Phenyl sulfate
  • B. Benzene
  • C. Catechol
  • D. Anisole
Q. What is the main product when propan-2-one is treated with sodium bisulfite?
  • A. Sodium propan-2-one sulfonate
  • B. Propan-2-ol
  • C. Propan-2-one bisulfite adduct
  • D. None of the above
Q. What is the main product when propanal is treated with excess alcohol in the presence of an acid catalyst?
  • A. Aldol
  • B. Acetal
  • C. Ketone
  • D. Carboxylic acid
Q. What is the main product when propanal is treated with excess Grignard reagent followed by hydrolysis?
  • A. Propan-1-ol
  • B. Propan-2-ol
  • C. Propan-1,2-diol
  • D. Butan-2-ol
Q. What is the main product when propanal is treated with excess hydrogen in the presence of a catalyst?
  • A. Propan-1-ol
  • B. Propan-2-ol
  • C. Propanoic acid
  • D. Propane
Q. What is the main product when propanoic acid is treated with thionyl chloride?
  • A. Propyl chloride
  • B. Propanoic anhydride
  • C. Propionyl chloride
  • D. Propylene
Q. What is the main product when propene is reacted with hydrogen in the presence of a catalyst?
  • A. Propane
  • B. Butane
  • C. Ethane
  • D. Cyclopropane
Q. What is the main product when propene undergoes hydroboration-oxidation?
  • A. Propan-1-ol
  • B. Propan-2-ol
  • C. Propanoic acid
  • D. Butanol
Q. What is the main product when toluene is nitrated?
  • A. Nitrotoluene
  • B. Dinitrotoluene
  • C. Benzaldehyde
  • D. Benzyl alcohol
Q. What is the main purpose of emulsifiers in food products?
  • A. Thicken
  • B. Stabilize mixtures
  • C. Add flavor
  • D. Preserve freshness
Q. What is the main purpose of using antioxidants in food?
  • A. Enhance color
  • B. Prevent oxidation
  • C. Improve taste
  • D. Increase shelf life
Q. What is the main purpose of using baking soda in cooking?
  • A. Flavoring
  • B. Leavening
  • C. Preserving
  • D. Coloring
Q. What is the main purpose of using fluoride in dental care?
  • A. Whiten teeth
  • B. Prevent cavities
  • C. Freshen breath
  • D. Strengthen gums
Q. What is the main reaction type when alcohols are converted to alkyl halides?
  • A. Substitution
  • B. Elimination
  • C. Addition
  • D. Redox
Q. What is the main reason for the appearance of a diffraction pattern when light passes through a narrow slit?
  • A. Interference of light waves
  • B. Refraction of light
  • C. Absorption of light
  • D. Reflection of light
Q. What is the main reason for the existence of geometric isomers?
  • A. Presence of double bonds
  • B. Presence of single bonds
  • C. Presence of chiral centers
  • D. Presence of functional groups
Q. What is the main reason for the stability of aromatic compounds?
  • A. High molecular weight
  • B. Presence of double bonds
  • C. Resonance energy
  • D. Hydrogen bonding
Q. What is the main reason for the stability of atomic nuclei?
  • A. Electromagnetic force
  • B. Gravitational force
  • C. Strong nuclear force
  • D. Weak nuclear force
Q. What is the main reason for the stability of benzene?
  • A. Presence of double bonds
  • B. Resonance
  • C. Hydrogen bonding
  • D. Ionic interactions
Q. What is the main reason for the stability of the electron orbits in an atom?
  • A. Centripetal force
  • B. Electrostatic force
  • C. Quantum mechanics
  • D. All of the above
Q. What is the main reason for the stability of the nucleus in an atom?
  • A. Electromagnetic force
  • B. Gravitational force
  • C. Strong nuclear force
  • D. Weak nuclear force
Q. What is the main reason for the stability of the nucleus?
  • A. Electromagnetic force
  • B. Gravitational force
  • C. Strong nuclear force
  • D. Weak nuclear force
Q. What is the main reason that gases have low density compared to solids and liquids?
  • A. High temperature
  • B. Low pressure
  • C. Large particle separation
  • D. High kinetic energy
Q. What is the main source of alkanes?
  • A. Coal
  • B. Natural gas
  • C. Petroleum
  • D. Biomass
Q. What is the main source of nitrogen oxides in the atmosphere?
  • A. Volcanic eruptions
  • B. Vehicle emissions
  • C. Industrial processes
  • D. Agricultural activities
Q. What is the main source of sulfur dioxide in the atmosphere?
  • A. Volcanic eruptions
  • B. Automobile emissions
  • C. Industrial processes
  • D. All of the above
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