Undergraduate MCQ & Objective Questions
The undergraduate level is a crucial phase in a student's academic journey, especially for those preparing for school and competitive exams. Mastering this stage can significantly enhance your understanding and retention of key concepts. Practicing MCQs and objective questions is essential, as it not only helps in reinforcing knowledge but also boosts your confidence in tackling important questions during exams.
What You Will Practise Here
Fundamental concepts in Mathematics and Science
Key definitions and theories across various subjects
Important formulas and their applications
Diagrams and graphical representations
Critical thinking and problem-solving techniques
Subject-specific MCQs designed for competitive exams
Revision of essential topics for better retention
Exam Relevance
Undergraduate topics are integral to various examinations such as CBSE, State Boards, NEET, and JEE. These subjects often feature a mix of conceptual and application-based questions. Common patterns include multiple-choice questions that assess both theoretical knowledge and practical application, making it vital for students to be well-versed in undergraduate concepts.
Common Mistakes Students Make
Overlooking the importance of understanding concepts rather than rote memorization
Misinterpreting questions due to lack of careful reading
Neglecting to practice numerical problems that require application of formulas
Failing to review mistakes made in previous practice tests
FAQs
Question: What are some effective strategies for solving undergraduate MCQ questions?Answer: Focus on understanding the concepts, practice regularly, and review your answers to learn from mistakes.
Question: How can I improve my speed in answering objective questions?Answer: Time yourself while practicing and gradually increase the number of questions you attempt in a set time.
Start your journey towards mastering undergraduate subjects today! Solve practice MCQs and test your understanding to ensure you are well-prepared for your exams. Your success is just a question away!
Q. Which of the following statements is true regarding an ideal gas? (2022)
A.
It has no volume
B.
It has no intermolecular forces
C.
It behaves according to the ideal gas law at all temperatures and pressures
D.
Both A and B
Show solution
Solution
An ideal gas is considered to have no volume and no intermolecular forces, making option D correct.
Correct Answer:
D
— Both A and B
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Q. Which of the following statements is true regarding capacitors in parallel? (2022)
A.
Total capacitance is the sum of individual capacitances
B.
Total capacitance is the product of individual capacitances
C.
Total capacitance is always less than the smallest capacitance
D.
Total capacitance is independent of the voltage
Show solution
Solution
For capacitors in parallel, the total capacitance is the sum of the individual capacitances: C_total = C₁ + C₂ + ...
Correct Answer:
A
— Total capacitance is the sum of individual capacitances
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Q. Which of the following statements is true regarding electric current? (2020)
A.
It flows from negative to positive
B.
It flows from positive to negative
C.
It does not require a closed circuit
D.
It is independent of voltage
Show solution
Solution
Electric current flows from positive to negative in a circuit.
Correct Answer:
B
— It flows from positive to negative
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Q. Which of the following statements is true regarding exothermic reactions? (2021)
A.
They absorb heat.
B.
They release heat.
C.
They require energy input.
D.
They have a positive enthalpy change.
Show solution
Solution
Exothermic reactions release heat, resulting in a negative enthalpy change.
Correct Answer:
B
— They release heat.
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Q. Which of the following statements is true regarding gravitational fields? (2022)
A.
Gravitational fields are always attractive
B.
Gravitational fields can be repulsive
C.
Gravitational fields are independent of mass
D.
Gravitational fields do not exist in space
Show solution
Solution
Gravitational fields are always attractive, pulling masses towards each other.
Correct Answer:
A
— Gravitational fields are always attractive
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Q. Which of the following statements is true regarding ideal gases? (2023)
A.
They have no volume
B.
They attract each other
C.
They occupy no space
D.
They have mass
Show solution
Solution
Ideal gases are considered to have no volume and no intermolecular forces.
Correct Answer:
A
— They have no volume
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Q. Which of the following statements is true regarding laminar flow?
A.
It occurs at high velocities
B.
It is characterized by smooth and orderly fluid motion
C.
It has a high Reynolds number
D.
It is turbulent in nature
Show solution
Solution
Laminar flow is characterized by smooth and orderly fluid motion, typically occurring at low velocities.
Correct Answer:
B
— It is characterized by smooth and orderly fluid motion
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Q. Which of the following statements is true regarding reduction? (2020)
A.
It involves the gain of electrons
B.
It involves the loss of electrons
C.
It always occurs with oxidation
D.
Both A and C are correct
Show solution
Solution
Reduction is defined as the gain of electrons, and it always occurs simultaneously with oxidation in redox reactions.
Correct Answer:
D
— Both A and C are correct
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Q. Which of the following statements is true regarding the Arrhenius equation? (2023)
A.
It relates temperature to the rate constant
B.
It is only applicable to zero-order reactions
C.
It does not include activation energy
D.
It is a linear equation
Show solution
Solution
The Arrhenius equation relates temperature to the rate constant and includes activation energy.
Correct Answer:
A
— It relates temperature to the rate constant
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Q. Which of the following statements is true regarding the boiling points of aldehydes and ketones? (2023)
A.
Aldehydes have higher boiling points than ketones
B.
Ketones have higher boiling points than aldehydes
C.
Both have the same boiling points
D.
None of the above
Show solution
Solution
Ketones generally have higher boiling points than aldehydes due to stronger dipole-dipole interactions.
Correct Answer:
B
— Ketones have higher boiling points than aldehydes
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Q. Which of the following statements is true regarding the complex [Ag(NH3)2]+? (2023)
A.
It is a tetrahedral complex.
B.
It is a square planar complex.
C.
It is a linear complex.
D.
It is an octahedral complex.
Show solution
Solution
[Ag(NH3)2]+ is a linear complex because silver (Ag) has a coordination number of 2 with two bidentate ligands.
Correct Answer:
C
— It is a linear complex.
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Q. Which of the following statements is true regarding the complex [Cr(NH3)6]3+? (2023)
A.
It is tetrahedral
B.
It is octahedral
C.
It is square planar
D.
It has a coordination number of 4
Show solution
Solution
The complex [Cr(NH3)6]3+ is octahedral with a coordination number of 6, as it is surrounded by six ammonia ligands.
Correct Answer:
B
— It is octahedral
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Q. Which of the following statements is true regarding the equilibrium constant? (2020)
A.
Kc is temperature dependent
B.
Kc is pressure dependent
C.
Kc is concentration dependent
D.
Kc is independent of temperature
Show solution
Solution
The equilibrium constant Kc is dependent on temperature; changing the temperature will change the value of Kc.
Correct Answer:
A
— Kc is temperature dependent
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Q. Which of the following statements is true regarding the Freundlich adsorption isotherm? (2020) 2020
A.
It is applicable to monolayer adsorption.
B.
It assumes a uniform surface.
C.
It is a linear relationship.
D.
It describes heterogeneous adsorption.
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Solution
The Freundlich adsorption isotherm describes heterogeneous adsorption on surfaces with varying affinities, making it suitable for real-world applications.
Correct Answer:
D
— It describes heterogeneous adsorption.
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Q. Which of the following statements is true regarding the Freundlich adsorption isotherm? (2020)
A.
It applies only to monolayer adsorption.
B.
It is applicable to heterogeneous surfaces.
C.
It predicts a constant adsorption capacity.
D.
It is a linear relationship.
Show solution
Solution
The Freundlich adsorption isotherm is applicable to heterogeneous surfaces and describes how adsorption varies with pressure or concentration, indicating that it is not limited to monolayer adsorption.
Correct Answer:
B
— It is applicable to heterogeneous surfaces.
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Q. Which of the following statements is true regarding the magnetic field due to a long straight conductor? (2020)
A.
It is uniform and constant
B.
It decreases with distance from the conductor
C.
It is strongest at the center of the conductor
D.
It is only present when the current is alternating
Show solution
Solution
The magnetic field around a long straight conductor decreases with distance from the conductor, following the inverse relationship.
Correct Answer:
B
— It decreases with distance from the conductor
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Q. Which of the following statements is true regarding the magnetic field due to a solenoid? (2023)
A.
It is uniform inside and zero outside
B.
It is zero inside and uniform outside
C.
It is uniform both inside and outside
D.
It varies linearly with distance
Show solution
Solution
A solenoid produces a uniform magnetic field inside and negligible field outside when it is long compared to its diameter.
Correct Answer:
A
— It is uniform inside and zero outside
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Q. Which of the following statements is true regarding the magnetic field inside a long solenoid? (2023)
A.
It is zero
B.
It is uniform and parallel to the axis
C.
It varies with distance from the center
D.
It is stronger at the ends
Show solution
Solution
Inside a long solenoid, the magnetic field is uniform and parallel to the axis of the solenoid, provided the solenoid is long enough.
Correct Answer:
B
— It is uniform and parallel to the axis
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Q. Which of the following statements is true regarding the uncertainty principle? (2023)
A.
It applies only to macroscopic objects
B.
It states that position and momentum cannot be known simultaneously
C.
It is only applicable in classical mechanics
D.
It has no practical implications
Show solution
Solution
The uncertainty principle states that position and momentum cannot be precisely known at the same time.
Correct Answer:
B
— It states that position and momentum cannot be known simultaneously
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Q. Which of the following statements is true regarding thermal conductivity? (2023)
A.
It is higher in gases than in solids
B.
It is a measure of a material's ability to conduct heat
C.
It increases with temperature
D.
It is independent of material properties
Show solution
Solution
Thermal conductivity is a measure of a material's ability to conduct heat; it varies with material and temperature.
Correct Answer:
B
— It is a measure of a material's ability to conduct heat
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Q. Which of the following states of matter has a definite shape?
A.
Solid
B.
Liquid
C.
Gas
D.
Plasma
Show solution
Solution
Solids have a definite shape due to closely packed particles that do not move freely.
Correct Answer:
A
— Solid
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Q. Which of the following states of matter has a definite volume but no definite shape?
A.
Solid
B.
Liquid
C.
Gas
D.
Plasma
Show solution
Solution
Liquids have a definite volume but take the shape of their container.
Correct Answer:
B
— Liquid
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Q. Which of the following states of matter has the highest kinetic energy? (2022)
A.
Solid
B.
Liquid
C.
Gas
D.
Plasma
Show solution
Solution
Plasma has the highest kinetic energy as it consists of ionized gases with free-moving charged particles.
Correct Answer:
D
— Plasma
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Q. Which of the following states of matter has the least intermolecular forces?
A.
Solid
B.
Liquid
C.
Gas
D.
All are equal
Show solution
Solution
Gases have the least intermolecular forces, allowing particles to move freely.
Correct Answer:
C
— Gas
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Q. Which of the following states of matter has the weakest intermolecular forces? (2023)
A.
Solid
B.
Liquid
C.
Gas
D.
Plasma
Show solution
Solution
Gases have the weakest intermolecular forces, allowing particles to move freely.
Correct Answer:
C
— Gas
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Q. Which of the following structures carries genetic information? (2019)
A.
Ribosome
B.
Chromosome
C.
Endoplasmic Reticulum
D.
Golgi Apparatus
Show solution
Solution
Chromosomes are structures that carry genetic information in the form of genes.
Correct Answer:
B
— Chromosome
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Q. Which of the following structures develops into a fruit after fertilization? (2022)
A.
Ovary
B.
Stigma
C.
Anther
D.
Filament
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Solution
After fertilization, the ovary of the flower develops into a fruit, which contains the seeds.
Correct Answer:
A
— Ovary
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Q. Which of the following structures develops into a seed after fertilization? (2022)
A.
Ovary
B.
Ovule
C.
Stigma
D.
Anther
Show solution
Solution
The ovule develops into a seed after fertilization occurs.
Correct Answer:
B
— Ovule
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Q. Which of the following structures has the highest packing efficiency? (2019)
A.
Simple cubic
B.
Body-centered cubic
C.
Face-centered cubic
D.
Hexagonal close-packed
Show solution
Solution
The face-centered cubic (FCC) structure has the highest packing efficiency of approximately 74%.
Correct Answer:
C
— Face-centered cubic
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Q. Which of the following structures is found in plant cells but not in animal cells? (2020)
A.
Cell membrane
B.
Nucleus
C.
Chloroplast
D.
Mitochondria
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Solution
Chloroplasts are found in plant cells and are responsible for photosynthesis, while animal cells do not have them.
Correct Answer:
C
— Chloroplast
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