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 type of biomolecule is insulin?
A.
Carbohydrate
B.
Lipid
C.
Protein
D.
Nucleic acid
Show solution
Solution
Insulin is a protein hormone that regulates glucose levels in the blood.
Correct Answer:
C
— Protein
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Q. What type of bond forms between the carboxyl group of one amino acid and the amino group of another?
A.
Hydrogen bond
B.
Ionic bond
C.
Peptide bond
D.
Disulfide bond
Show solution
Solution
A peptide bond forms between the carboxyl group of one amino acid and the amino group of another, linking them together in a protein.
Correct Answer:
C
— Peptide bond
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Q. What type of bond is formed between amino acids in a protein?
A.
Ionic bond
B.
Covalent bond
C.
Hydrogen bond
D.
Van der Waals forces
Show solution
Solution
A covalent bond, specifically a peptide bond, is formed between amino acids in a protein.
Correct Answer:
B
— Covalent bond
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Q. What type of bond is formed between sodium and chlorine in NaCl?
A.
Ionic bond
B.
Covalent bond
C.
Metallic bond
D.
Van der Waals bond
Show solution
Solution
NaCl is formed by an ionic bond due to the transfer of electrons from sodium to chlorine.
Correct Answer:
A
— Ionic bond
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Q. What type of bond is formed between the amino group of one amino acid and the carboxyl group of another?
A.
Ionic bond
B.
Hydrogen bond
C.
Peptide bond
D.
Covalent bond
Show solution
Solution
A peptide bond is formed between the amino group of one amino acid and the carboxyl group of another.
Correct Answer:
C
— Peptide bond
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Q. What type of bond is formed between two metal atoms?
A.
Ionic bond
B.
Covalent bond
C.
Metallic bond
D.
Polar bond
Show solution
Solution
Metallic bonds are formed between metal atoms, characterized by a 'sea of electrons' that are free to move.
Correct Answer:
C
— Metallic bond
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Q. What type of bond is primarily responsible for the secondary structure of proteins?
A.
Ionic bonds
B.
Hydrogen bonds
C.
Covalent bonds
D.
Disulfide bonds
Show solution
Solution
Hydrogen bonds are primarily responsible for the formation of secondary structures like alpha-helices and beta-pleated sheets in proteins.
Correct Answer:
B
— Hydrogen bonds
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Q. What type of bond links amino acids in proteins?
A.
Ionic bond
B.
Covalent bond
C.
Hydrogen bond
D.
Van der Waals forces
Show solution
Solution
Amino acids are linked by peptide bonds, which are a type of covalent bond.
Correct Answer:
B
— Covalent bond
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Q. What type of bond links amino acids together in a protein?
A.
Ionic bond
B.
Covalent bond
C.
Hydrogen bond
D.
Peptide bond
Show solution
Solution
A peptide bond is a specific type of covalent bond that links amino acids together in proteins.
Correct Answer:
D
— Peptide bond
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Q. What type of bond links amino acids together in proteins?
A.
Ionic bond
B.
Covalent bond
C.
Hydrogen bond
D.
Van der Waals forces
Show solution
Solution
Amino acids are linked by peptide bonds, which are a type of covalent bond.
Correct Answer:
B
— Covalent bond
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Q. What type of bond links monosaccharides in a disaccharide?
A.
Ionic bond
B.
Covalent bond
C.
Hydrogen bond
D.
Van der Waals bond
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Solution
Monosaccharides in a disaccharide are linked by a covalent bond known as a glycosidic bond.
Correct Answer:
B
— Covalent bond
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Q. What type of bond links monosaccharides in polysaccharides?
A.
Ionic bond
B.
Covalent bond
C.
Hydrogen bond
D.
Van der Waals forces
Show solution
Solution
Monosaccharides are linked by glycosidic bonds, which are a type of covalent bond.
Correct Answer:
B
— Covalent bond
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Q. What type of bonding is present in alkanes?
A.
Ionic bonding
B.
Covalent bonding
C.
Metallic bonding
D.
Hydrogen bonding
Show solution
Solution
Alkanes are characterized by covalent bonding between carbon and hydrogen atoms.
Correct Answer:
B
— Covalent bonding
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Q. What type of carbohydrate is glucose?
A.
Disaccharide
B.
Monosaccharide
C.
Polysaccharide
D.
Oligosaccharide
Show solution
Solution
Glucose is a monosaccharide, which is the simplest form of carbohydrates.
Correct Answer:
B
— Monosaccharide
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Q. What type of carbohydrate is starch?
A.
Monosaccharide
B.
Disaccharide
C.
Oligosaccharide
D.
Polysaccharide
Show solution
Solution
Starch is classified as a polysaccharide, consisting of many glucose units.
Correct Answer:
D
— Polysaccharide
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Q. What type of carbohydrate is sucrose?
A.
Monosaccharide
B.
Disaccharide
C.
Oligosaccharide
D.
Polysaccharide
Show solution
Solution
Sucrose is a disaccharide composed of glucose and fructose.
Correct Answer:
B
— Disaccharide
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Q. What type of circuit is a potentiometer typically used in?
A.
Series circuit
B.
Parallel circuit
C.
Open circuit
D.
Closed circuit
Show solution
Solution
A potentiometer is typically used in a closed circuit to measure voltage without drawing current.
Correct Answer:
D
— Closed circuit
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Q. What type of circuit is typically used in a potentiometer setup?
A.
Series circuit
B.
Parallel circuit
C.
Combination circuit
D.
Open circuit
Show solution
Solution
A potentiometer setup typically uses a series circuit to ensure a constant current flows through the wire.
Correct Answer:
A
— Series circuit
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Q. What type of curves does the equation (x^2/a^2) + (y^2/b^2) = 1 represent?
A.
Ellipses
B.
Circles
C.
Parabolas
D.
Hyperbolas
Show solution
Solution
The equation (x^2/a^2) + (y^2/b^2) = 1 represents a family of ellipses with varying semi-major (a) and semi-minor (b) axes.
Correct Answer:
A
— Ellipses
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Q. What type of curves does the equation y = a + b cos(x) represent?
A.
Linear functions
B.
Cosine waves with varying amplitudes
C.
Parabolas
D.
Exponential functions
Show solution
Solution
The equation y = a + b cos(x) represents cosine waves with varying amplitudes 'b' and vertical shifts 'a'.
Correct Answer:
B
— Cosine waves with varying amplitudes
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Q. What type of curves does the equation y = a e^(bx) represent?
A.
Linear functions
B.
Exponential functions
C.
Trigonometric functions
D.
Polynomial functions
Show solution
Solution
The equation y = a e^(bx) represents a family of exponential functions with varying growth rates.
Correct Answer:
B
— Exponential functions
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Q. What type of curves does the equation y = a sin(bx + c) represent?
A.
Linear functions
B.
Exponential functions
C.
Trigonometric functions
D.
Polynomial functions
Show solution
Solution
The equation y = a sin(bx + c) represents a family of trigonometric functions (sine waves) with varying amplitude (a) and frequency (b).
Correct Answer:
C
— Trigonometric functions
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Q. What type of curves does the equation y = a(x - h)^2 + k represent?
A.
Linear functions
B.
Parabolas
C.
Circles
D.
Ellipses
Show solution
Solution
The equation y = a(x - h)^2 + k represents a family of parabolas with vertex at (h, k) and varying 'a' determining the direction and width.
Correct Answer:
B
— Parabolas
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Q. What type of curves does the equation y = e^(kx) represent?
A.
Linear functions
B.
Exponential functions
C.
Logarithmic functions
D.
Polynomial functions
Show solution
Solution
The equation y = e^(kx) represents a family of exponential functions with varying growth rates (k).
Correct Answer:
B
— Exponential functions
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Q. What type of curves does the equation y = k/x represent?
A.
Hyperbolas
B.
Parabolas
C.
Circles
D.
Ellipses
Show solution
Solution
The equation y = k/x represents a family of hyperbolas where k is a constant.
Correct Answer:
A
— Hyperbolas
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Q. What type of curves does the equation y = kx^2 represent?
A.
Straight lines
B.
Parabolas with varying widths
C.
Circles
D.
Ellipses
Show solution
Solution
The equation y = kx^2 represents a family of parabolas that open upwards or downwards depending on the sign of 'k'.
Correct Answer:
B
— Parabolas with varying widths
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Q. What type of curves does the equation y = mx^3 + bx + c represent?
A.
Linear functions
B.
Cubic functions
C.
Quadratic functions
D.
Exponential functions
Show solution
Solution
The equation y = mx^3 + bx + c represents a family of cubic functions with varying coefficients.
Correct Answer:
B
— Cubic functions
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Q. What type of curves does the equation y = mx^3 + bx^2 + cx + d represent?
A.
Linear functions
B.
Quadratic functions
C.
Cubic functions
D.
Quartic functions
Show solution
Solution
The equation y = mx^3 + bx^2 + cx + d represents a family of cubic functions with varying coefficients.
Correct Answer:
C
— Cubic functions
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Q. What type of curves does the equation y = mx^3 + c represent?
A.
Linear functions
B.
Cubic functions
C.
Quadratic functions
D.
Exponential functions
Show solution
Solution
The equation y = mx^3 + c represents a family of cubic functions where m is the coefficient of x^3.
Correct Answer:
B
— Cubic functions
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Q. What type of damping is characterized by the system oscillating with gradually decreasing amplitude?
A.
Underdamping
B.
Critical damping
C.
Overdamping
D.
No damping
Show solution
Solution
Underdamping is characterized by oscillations with gradually decreasing amplitude.
Correct Answer:
A
— Underdamping
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