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 chemical is commonly found in household bleach?
  • A. Hydrogen peroxide
  • B. Sodium hypochlorite
  • C. Ammonium hydroxide
  • D. Calcium hypochlorite
Q. Which chemical is commonly used as a food preservative?
  • A. Sodium chloride
  • B. Sodium benzoate
  • C. Vinegar
  • D. Sugar
Q. Which chemical is commonly used to treat drinking water?
  • A. Chlorine
  • B. Fluoride
  • C. Sodium bicarbonate
  • D. Sulfuric acid
Q. Which chemical is primarily responsible for ozone depletion?
  • A. Carbon Dioxide
  • B. Chlorofluorocarbons (CFCs)
  • C. Methane
  • D. Sulfur Dioxide
Q. Which chemical is primarily responsible for the depletion of the ozone layer?
  • A. Carbon Dioxide
  • B. Chlorofluorocarbons (CFCs)
  • C. Methane
  • D. Sulfur Dioxide
Q. Which colligative property can be used to determine the molar mass of a solute?
  • A. Vapor pressure lowering
  • B. Boiling point elevation
  • C. Freezing point depression
  • D. All of the above
Q. Which colligative property is affected by the presence of electrolytes?
  • A. Vapor pressure lowering
  • B. Boiling point elevation
  • C. Freezing point depression
  • D. All of the above
Q. Which colligative property is used to determine molar mass of a solute?
  • A. Boiling point elevation
  • B. Freezing point depression
  • C. Osmotic pressure
  • D. All of the above
Q. Which colligative property is used to determine the molar mass of a solute?
  • A. Boiling point elevation
  • B. Freezing point depression
  • C. Osmotic pressure
  • D. All of the above
Q. Which compound can exhibit both structural and geometric isomerism?
  • A. C2H4
  • B. C4H8
  • C. C5H10
  • D. C3H6
Q. Which compound does NOT exhibit optical isomerism?
  • A. Lactic acid
  • B. Glucose
  • C. 2-butanol
  • D. Butan-2-one
Q. Which compound exhibits optical isomerism?
  • A. 2-butanol
  • B. 1-butanol
  • C. Cyclohexane
  • D. Ethylene
Q. Which compound is commonly used as a preservative in food?
  • A. Sodium chloride
  • B. Sodium benzoate
  • C. Potassium nitrate
  • D. Calcium carbonate
Q. Which device utilizes the p-n junction principle?
  • A. Resistor
  • B. Capacitor
  • C. Diode
  • D. Inductor
Q. Which element has the electronic configuration 1s2 2s2 2p6 3s2 3p1?
  • A. Al
  • B. Si
  • C. P
  • D. Cl
Q. Which element has the electronic configuration 1s2 2s2 2p6 3s2 3p6 4s2?
  • A. Arsenic
  • B. Calcium
  • C. Krypton
  • D. Titanium
Q. Which enzyme breaks down starch into glucose?
  • A. Amylase
  • B. Lactase
  • C. Sucrase
  • D. Cellulase
Q. Which enzyme is responsible for the hydrolysis of starch?
  • A. Amylase
  • B. Cellulase
  • C. Lactase
  • D. Maltase
Q. Which equation is used to calculate the viscosity of a fluid in a capillary tube?
  • A. Bernoulli's equation
  • B. Poiseuille's law
  • C. Navier-Stokes equation
  • D. Continuity equation
Q. Which equation is used to calculate the viscosity of a fluid in a pipe?
  • A. Bernoulli's equation
  • B. Poiseuille's law
  • C. Continuity equation
  • D. Navier-Stokes equation
Q. Which equation relates the viscosity of a fluid to the flow rate in a capillary tube?
  • A. Bernoulli's equation
  • B. Poiseuille's law
  • C. Continuity equation
  • D. Ideal gas law
Q. Which f-block element is known for its use in nuclear reactors?
  • A. Thorium
  • B. Cerium
  • C. Neodymium
  • D. Gadolinium
Q. Which factor does NOT affect the Gibbs Free Energy of a reaction?
  • A. Temperature
  • B. Pressure
  • C. Concentration of reactants
  • D. Nature of the solvent
Q. Which factor does NOT affect the Gibbs Free Energy of a system?
  • A. Temperature
  • B. Pressure
  • C. Concentration of reactants
  • D. Nature of the solvent
Q. Which functional group is present in alcohols?
  • A. Aldehyde
  • B. Hydroxyl
  • C. Carboxyl
  • D. Amine
Q. Which gas has the highest density at the same temperature and pressure?
  • A. He
  • B. Ar
  • C. N2
  • D. CO2
Q. Which gas has the highest rate of diffusion at a given temperature?
  • A. O2
  • B. N2
  • C. He
  • D. CO2
Q. Which gas is primarily responsible for the depletion of the ozone layer?
  • A. Carbon Dioxide
  • B. Chlorofluorocarbons
  • C. Methane
  • D. Nitrous Oxide
Q. Which gas is primarily responsible for the greenhouse effect?
  • A. Oxygen
  • B. Nitrogen
  • C. Carbon Dioxide
  • D. Hydrogen
Q. Which gas is produced during the reaction of an acid with a carbonate?
  • A. Oxygen
  • B. Hydrogen
  • C. Carbon dioxide
  • D. Nitrogen
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