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 primary monomer used in the production of polyethylene?
  • A. Propylene
  • B. Ethylene
  • C. Styrene
  • D. Vinyl chloride
Q. What is the primary monomer used to produce polystyrene?
  • A. Ethylene
  • B. Propylene
  • C. Styrene
  • D. Vinyl chloride
Q. What is the primary oxidation state of aluminum in aluminum chloride (AlCl3)?
  • A. +1
  • B. +2
  • C. +3
  • D. 0
Q. What is the primary oxidation state of chlorine in potassium chloride (KCl)?
  • A. -1
  • B. 0
  • C. +1
  • D. +7
Q. What is the primary oxidation state of chlorine in sodium chloride (NaCl)?
  • A. -1
  • B. 0
  • C. +1
  • D. +2
Q. What is the primary oxidation state of chromium in CrO3?
  • A. +2
  • B. +3
  • C. +6
  • D. +7
Q. What is the primary oxidation state of group 14 elements in their compounds?
  • A. +2
  • B. +4
  • C. +6
  • D. 0
Q. What is the primary oxidation state of manganese in KMnO4?
  • A. +2
  • B. +4
  • C. +6
  • D. +7
Q. What is the primary oxidation state of manganese in MnO4-?
  • A. +2
  • B. +4
  • C. +6
  • D. +7
Q. What is the primary oxidation state of sulfur in sulfuric acid (H2SO4)?
  • A. +4
  • B. +6
  • C. 0
  • D. -2
Q. What is the primary pollutant in photochemical smog?
  • A. Carbon monoxide
  • B. Nitrogen oxides
  • C. Ozone
  • D. Sulfur dioxide
Q. What is the primary process involved in the adsorption of gases on solid surfaces?
  • A. Diffusion
  • B. Condensation
  • C. Chemical reaction
  • D. Van der Waals forces
Q. What is the primary product formed when hydrogen reacts with oxygen?
  • A. Water
  • B. Hydrogen peroxide
  • C. Ozone
  • D. Hydroxyl radical
Q. What is the primary product of a nuclear fusion reaction in stars?
  • A. Helium
  • B. Hydrogen
  • C. Carbon
  • D. Uranium
Q. What is the primary product of nuclear fusion in stars like the Sun?
  • A. Helium
  • B. Hydrogen
  • C. Carbon
  • D. Oxygen
Q. What is the primary product of the complete combustion of hydrocarbons?
  • A. Carbon monoxide
  • B. Carbon dioxide
  • C. Water
  • D. Oxygen
Q. What is the primary product of the hydrolysis of an ester?
  • A. Alcohol
  • B. Carboxylic acid
  • C. Both alcohol and carboxylic acid
  • D. None of the above
Q. What is the primary product of the reaction between 1-chlorobutane and potassium cyanide?
  • A. 1-cyanobutane
  • B. 2-cyanobutane
  • C. Butyronitrile
  • D. Butyl cyanide
Q. What is the primary product of the reaction between a carboxylic acid and an alcohol in the presence of an acid catalyst?
  • A. Aldehyde
  • B. Ester
  • C. Ketone
  • D. Amide
Q. What is the primary product of the reaction between ethene and bromine?
  • A. 1,2-dibromoethane
  • B. Bromoethane
  • C. Ethane
  • D. Bromobenzene
Q. What is the primary product when 1-bromo-2-methylpropane reacts with KOH in ethanol?
  • A. 2-methylpropene
  • B. 1-methylpropene
  • C. 2-bromopropane
  • D. no reaction
Q. What is the primary product when 1-chloropropane reacts with potassium tert-butoxide?
  • A. Propene
  • B. 2-methylpropane
  • C. 1-butene
  • D. No reaction
Q. What is the primary product when a carboxylic acid is reduced with lithium aluminum hydride (LiAlH4)?
  • A. Alcohol
  • B. Aldehyde
  • C. Ketone
  • D. Ester
Q. What is the primary product when a carboxylic acid reacts with thionyl chloride (SOCl2)?
  • A. Acid chloride
  • B. Ester
  • C. Alcohol
  • D. Aldehyde
Q. What is the primary product when ammonia reacts with an alkyl halide?
  • A. Amine
  • B. Amide
  • C. Alkane
  • D. Alcohol
Q. What is the primary product when an alcohol is oxidized?
  • A. Alkane
  • B. Aldehyde
  • C. Ketone
  • D. Carboxylic acid
Q. What is the primary product when chlorobenzene is treated with sodium hydroxide at high temperature?
  • A. Phenol
  • B. Benzene
  • C. Chlorobenzene
  • D. Sodium chloride
Q. What is the primary product when ethene reacts with water in the presence of an acid?
  • A. Ethanol
  • B. Ethane
  • C. Ethanoic acid
  • D. Ethylene glycol
Q. What is the primary product when hydrogen reacts with oxygen?
  • A. Water
  • B. Hydrogen peroxide
  • C. Ozone
  • D. Hydroxyl radical
Q. What is the primary product when magnesium reacts with dilute hydrochloric acid?
  • A. Magnesium chloride
  • B. Hydrogen gas
  • C. Magnesium hydroxide
  • D. Magnesium oxide
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