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. What is the primary use of insulin produced through recombinant DNA technology? (2022)
A.
To treat diabetes
B.
To enhance growth in livestock
C.
To improve crop yield
D.
To produce biofuels
Show solution
Solution
Insulin produced through recombinant DNA technology is primarily used to treat diabetes by regulating blood sugar levels.
Correct Answer:
A
— To treat diabetes
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Q. What is the primary use of lithium in batteries? (2023)
A.
As a conductor
B.
As a cathode material
C.
As an anode material
D.
As an electrolyte
Show solution
Solution
Lithium is primarily used as an anode material in lithium-ion batteries due to its high electrochemical potential.
Correct Answer:
C
— As an anode material
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Q. What is the primary use of magnesium in industries? (2021)
A.
Construction
B.
Aerospace
C.
Electronics
D.
Pharmaceuticals
Show solution
Solution
Magnesium is primarily used in the aerospace industry due to its lightweight and strength.
Correct Answer:
B
— Aerospace
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Q. What is the primary use of magnesium in industry? (2023)
A.
Construction
B.
Aerospace
C.
Electronics
D.
Pharmaceuticals
Show solution
Solution
Magnesium is primarily used in construction and aerospace industries due to its lightweight and strength.
Correct Answer:
B
— Aerospace
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Q. What is the primary use of polyethylene?
A.
Insulation
B.
Packaging
C.
Textiles
D.
Adhesives
Show solution
Solution
Polyethylene is primarily used in packaging due to its flexibility and durability.
Correct Answer:
B
— Packaging
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Q. What is the primary use of polystyrene?
A.
Insulation
B.
Packaging
C.
Textiles
D.
Adhesives
Show solution
Solution
Polystyrene is widely used in packaging materials due to its lightweight and cushioning properties.
Correct Answer:
B
— Packaging
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Q. What is the primary use of sodium bicarbonate (NaHCO3)? (2020)
A.
Baking
B.
Cleaning
C.
Medicine
D.
All of the above
Show solution
Solution
Sodium bicarbonate is used in baking, cleaning, and medicine, making it versatile.
Correct Answer:
D
— All of the above
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Q. What is the primary use of sulfuric acid (H2SO4) in industry? (2019)
A.
Fertilizer production
B.
Battery acid
C.
Cleaning agent
D.
Food preservative
Show solution
Solution
Sulfuric acid is primarily used in the production of fertilizers.
Correct Answer:
A
— Fertilizer production
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Q. What is the primary use of sulfuric acid (H2SO4)? (2022)
A.
Fertilizer
B.
Battery acid
C.
Detergent
D.
Food preservative
Show solution
Solution
Sulfuric acid is primarily used as battery acid in lead-acid batteries.
Correct Answer:
B
— Battery acid
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Q. What is the primary use of sulfuric acid in the industry? (2023)
A.
Fertilizer production
B.
Battery acid
C.
Detergent manufacturing
D.
Food preservation
Show solution
Solution
Sulfuric acid is primarily used as battery acid in lead-acid batteries.
Correct Answer:
B
— Battery acid
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Q. What is the primary use of titanium dioxide (TiO2)? (2023)
A.
Pigment
B.
Catalyst
C.
Semiconductor
D.
Reagent
Show solution
Solution
Titanium dioxide (TiO2) is primarily used as a white pigment in paints and coatings.
Correct Answer:
A
— Pigment
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Q. What is the principal quantum number for an electron in the third energy level? (2019)
Show solution
Solution
The principal quantum number (n) indicates the energy level; for the third energy level, n = 3.
Correct Answer:
C
— 3
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Q. What is the principal quantum number for the outermost electron in sodium (Na)? (2022) 2022
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Solution
Sodium has an atomic number of 11, and its outermost electron is in the 3rd shell, so n=3.
Correct Answer:
C
— 3
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Q. What is the principal quantum number for the outermost electrons in sodium (Na)? (2023) 2023
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Solution
Sodium has the electronic configuration of 1s² 2s² 2p⁶ 3s¹, so the principal quantum number for the outermost electrons is 3.
Correct Answer:
C
— 3
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Q. What is the principal quantum number of an electron in the ground state of a hydrogen atom? (2022)
Show solution
Solution
The ground state of hydrogen corresponds to n = 1.
Correct Answer:
B
— 1
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Q. What is the principal quantum number of an electron in the third energy level? (2023)
Show solution
Solution
The principal quantum number (n) indicates the energy level. For the third energy level, n = 3.
Correct Answer:
C
— 3
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Q. What is the principal quantum number of the outermost electron in a chlorine atom? (2022)
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Solution
Chlorine has an atomic number of 17, and its outermost electrons are in the 3rd shell, so n=3.
Correct Answer:
C
— 3
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Q. What is the principal quantum number of the outermost electron in an atom of potassium? (2022)
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Solution
Potassium has an atomic number of 19, and its outermost electron is in the n=4 shell.
Correct Answer:
C
— 3
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Q. What is the principal quantum number of the outermost electrons in an atom of chlorine? (2022)
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Solution
Chlorine has an atomic number of 17, and its outermost electrons are in the n=3 shell.
Correct Answer:
C
— 3
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Q. What is the principle behind a manometer? (2023)
A.
It measures temperature.
B.
It measures pressure difference.
C.
It measures fluid density.
D.
It measures flow rate.
Show solution
Solution
A manometer is used to measure the pressure difference between two points in a fluid.
Correct Answer:
B
— It measures pressure difference.
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Q. What is the principle behind a photodiode? (2022)
A.
Thermal emission
B.
Photoelectric effect
C.
P-N junction
D.
Capacitance
Show solution
Solution
A photodiode operates on the principle of the photoelectric effect, where light generates electron-hole pairs.
Correct Answer:
B
— Photoelectric effect
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Q. What is the principle behind a thermos flask? (2022)
A.
Conduction
B.
Convection
C.
Radiation
D.
Insulation
Show solution
Solution
The principle behind a thermos flask is insulation, which minimizes heat transfer.
Correct Answer:
D
— Insulation
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Q. What is the principle behind the functioning of a lever? (2019)
A.
Conservation of energy
B.
Conservation of momentum
C.
Mechanical advantage
D.
Work-energy theorem
Show solution
Solution
A lever operates on the principle of mechanical advantage, allowing a smaller force to lift a larger load.
Correct Answer:
C
— Mechanical advantage
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Q. What is the principle behind the operation of a hydraulic lift? (2019)
A.
Bernoulli's principle
B.
Archimedes' principle
C.
Pascal's law
D.
Newton's law
Show solution
Solution
A hydraulic lift operates based on Pascal's law, which states that pressure applied to a confined fluid is transmitted undiminished in all directions.
Correct Answer:
C
— Pascal's law
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Q. What is the principle behind the working of a galvanometer? (2023)
A.
Electromagnetic induction
B.
Magnetic force on a current-carrying conductor
C.
Electrostatic force
D.
Magnetic field lines
Show solution
Solution
A galvanometer works on the principle of the magnetic force acting on a current-carrying conductor placed in a magnetic field.
Correct Answer:
B
— Magnetic force on a current-carrying conductor
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Q. What is the principle that states that an increase in the speed of a fluid occurs simultaneously with a decrease in pressure?
A.
Bernoulli's Principle
B.
Archimedes' Principle
C.
Pascal's Law
D.
Newton's Law
Show solution
Solution
Bernoulli's Principle states that an increase in the speed of a fluid occurs simultaneously with a decrease in pressure.
Correct Answer:
A
— Bernoulli's Principle
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Q. What is the principle that states that the buoyant force on an object is equal to the weight of the fluid displaced by the object?
A.
Archimedes' Principle
B.
Pascal's Law
C.
Bernoulli's Principle
D.
Newton's Law
Show solution
Solution
Archimedes' Principle states that the buoyant force on an object is equal to the weight of the fluid displaced by the object.
Correct Answer:
A
— Archimedes' Principle
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Q. What is the principle that states that the pressure in a fluid decreases as the fluid's velocity increases?
A.
Bernoulli's Principle
B.
Pascal's Principle
C.
Archimedes' Principle
D.
Hydrostatic Principle
Show solution
Solution
Bernoulli's Principle states that an increase in the velocity of a fluid occurs simultaneously with a decrease in pressure.
Correct Answer:
A
— Bernoulli's Principle
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Q. What is the probability of drawing a king from a standard deck of cards? (2023)
A.
1/13
B.
1/52
C.
1/4
D.
1/12
Show solution
Solution
Number of kings = 4. Probability = 4/52 = 1/13.
Correct Answer:
A
— 1/13
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Q. What is the probability of drawing a queen from a standard deck of cards?
A.
1/13
B.
1/26
C.
1/52
D.
1/4
Show solution
Solution
Number of queens = 4. Probability = 4/52 = 1/13.
Correct Answer:
A
— 1/13
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