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 amines is the most basic?
  • A. Methylamine
  • B. Ethylamine
  • C. Aniline
  • D. Dimethylamine
Q. Which of the following amino acids contains a sulfur atom?
  • A. Cysteine
  • B. Serine
  • C. Glutamine
  • D. Alanine
Q. Which of the following amino acids is essential in the human diet?
  • A. Glycine
  • B. Alanine
  • C. Lysine
  • D. Serine
Q. Which of the following assumptions is NOT part of the kinetic theory of gases?
  • A. Gas molecules are in constant random motion
  • B. Gas molecules have negligible volume compared to the container
  • C. Gas molecules experience intermolecular forces
  • D. Collisions between gas molecules are perfectly elastic
Q. Which of the following best describes plasma?
  • A. A solid with high density
  • B. A gas with low density
  • C. An ionized gas
  • D. A liquid at high temperature
Q. Which of the following best describes the arrangement of particles in a gas?
  • A. Tightly packed in a fixed position
  • B. Close together but can move past each other
  • C. Far apart and moving freely
  • D. Randomly arranged in a fixed structure
Q. Which of the following best describes the arrangement of particles in a solid?
  • A. Random and far apart
  • B. Close together and fixed in place
  • C. Close together but free to move
  • D. Random and close together
Q. Which of the following best describes the effect of a larger slit width on the diffraction pattern?
  • A. More pronounced diffraction
  • B. Less pronounced diffraction
  • C. No diffraction
  • D. Increased number of fringes
Q. Which of the following best describes the term 'angular width' of a diffraction maximum?
  • A. The distance between two adjacent maxima
  • B. The angle subtended by the maximum at the source
  • C. The width of the maximum on a screen
  • D. The angle between the first minimum and the central maximum
Q. Which of the following best describes the term 'elastic limit'?
  • A. Maximum stress a material can withstand
  • B. Point of permanent deformation
  • C. Point of maximum strain
  • D. Point of fracture
Q. Which of the following best describes the term 'shear modulus'?
  • A. Ratio of shear stress to shear strain
  • B. Ratio of tensile stress to tensile strain
  • C. Ratio of compressive stress to compressive strain
  • D. Ratio of bulk stress to bulk strain
Q. Which of the following biomolecules is primarily responsible for storing genetic information?
  • A. Proteins
  • B. Lipids
  • C. Carbohydrates
  • D. Nucleic acids
Q. Which of the following bonds is the strongest?
  • A. Single bond
  • B. Double bond
  • C. Triple bond
  • D. All are equal
Q. Which of the following carbohydrates is a disaccharide?
  • A. Maltose
  • B. Ribose
  • C. Cellulose
  • D. Glycogen
Q. Which of the following carbohydrates is a ketose?
  • A. Glucose
  • B. Fructose
  • C. Galactose
  • D. Mannose
Q. Which of the following carbohydrates is a reducing sugar?
  • A. Fructose
  • B. Sucrose
  • C. Maltose
  • D. Cellulose
Q. Which of the following carbohydrates is not digestible by humans?
  • A. Starch
  • B. Glycogen
  • C. Cellulose
  • D. Maltose
Q. Which of the following carboxylic acids is a dicarboxylic acid?
  • A. Acetic acid
  • B. Oxalic acid
  • C. Formic acid
  • D. Butanoic acid
Q. Which of the following carboxylic acids is a solid at room temperature?
  • A. Acetic acid
  • B. Formic acid
  • C. Stearic acid
  • D. Propanoic acid
Q. Which of the following changes will increase the yield of products in an exothermic reaction at equilibrium?
  • A. Increase the temperature
  • B. Decrease the pressure
  • C. Increase the concentration of reactants
  • D. Add a catalyst
Q. Which of the following changes will NOT affect the position of equilibrium for the reaction: 2SO2(g) + O2(g) ⇌ 2SO3(g)?
  • A. Increasing the concentration of SO2
  • B. Decreasing the temperature
  • C. Adding a catalyst
  • D. Increasing the volume of the container
Q. Which of the following changes will NOT affect the position of equilibrium in a closed system?
  • A. Adding a catalyst
  • B. Changing the concentration of reactants
  • C. Changing the pressure
  • D. Changing the temperature
Q. Which of the following changes will NOT affect the position of equilibrium?
  • A. Adding a catalyst
  • B. Changing the concentration of reactants
  • C. Changing the temperature
  • D. Changing the pressure
Q. Which of the following changes will shift the equilibrium to the right for the reaction: N2(g) + 3H2(g) ⇌ 2NH3(g)?
  • A. Increase in pressure
  • B. Decrease in temperature
  • C. Increase in volume
  • D. Addition of NH3
Q. Which of the following colligative properties is affected by the number of solute particles in a solution?
  • A. Vapor pressure lowering
  • B. Density
  • C. Color
  • D. Viscosity
Q. Which of the following colligative properties is used to determine molar mass?
  • A. Boiling point elevation
  • B. Freezing point depression
  • C. Osmotic pressure
  • D. All of the above
Q. Which of the following colligative properties is used to determine the molar mass of a solute?
  • A. Vapor pressure lowering
  • B. Boiling point elevation
  • C. Freezing point depression
  • D. Osmotic pressure
Q. Which of the following colors of light has the shortest wavelength?
  • A. Red
  • B. Green
  • C. Blue
  • D. Violet
Q. Which of the following complexes exhibits geometrical isomerism?
  • A. [Co(NH3)3Cl3]
  • B. [Ni(CN)4]2-
  • C. [CuCl4]2-
  • D. [Fe(CO)6]
Q. Which of the following complexes exhibits optical isomerism?
  • A. [Cr(en)3]3+
  • B. [Co(NH3)6]3+
  • C. [NiCl2(H2O)4]
  • D. [CuCl2]
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