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 element has the lowest electronegativity? (2023)
A.
Francium
B.
Cesium
C.
Lithium
D.
Sodium
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Solution
Francium has the lowest electronegativity among the given elements.
Correct Answer:
A
— Francium
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Q. Which element is commonly used in nuclear reactors as fuel? (2022)
A.
Uranium-235
B.
Carbon-12
C.
Hydrogen-1
D.
Oxygen-16
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Solution
Uranium-235 is commonly used as fuel in nuclear reactors due to its ability to sustain a chain reaction.
Correct Answer:
A
— Uranium-235
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Q. Which element is found in Group 17 of the periodic table? (2022)
A.
Sodium
B.
Chlorine
C.
Calcium
D.
Magnesium
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Solution
Chlorine is found in Group 17, also known as the halogens.
Correct Answer:
B
— Chlorine
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Q. Which element is known for its ability to form a stable +3 oxidation state? (2022)
A.
Boron
B.
Aluminium
C.
Gallium
D.
Indium
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Solution
Aluminium commonly exhibits a stable +3 oxidation state in its compounds.
Correct Answer:
B
— Aluminium
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Q. Which element is represented by the symbol 'Fe'? (2019)
A.
Fluorine
B.
Francium
C.
Iron
D.
Fermium
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Solution
The symbol 'Fe' stands for Iron, derived from its Latin name 'Ferrum'.
Correct Answer:
C
— Iron
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Q. Which element is represented by the symbol 'K'? (2022)
A.
Calcium
B.
Potassium
C.
Krypton
D.
Iron
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Solution
The symbol 'K' represents Potassium, derived from its Latin name 'Kalium'.
Correct Answer:
B
— Potassium
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Q. Which enzyme is commonly used in the process of DNA cloning? (2022)
A.
DNA polymerase
B.
Restriction endonuclease
C.
Ligase
D.
Reverse transcriptase
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Solution
Restriction endonucleases are used to cut DNA at specific sequences, which is essential for DNA cloning.
Correct Answer:
B
— Restriction endonuclease
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Q. Which enzyme is commonly used in the process of gene cloning? (2018)
A.
DNA polymerase
B.
Ligase
C.
Restriction endonuclease
D.
RNA polymerase
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Solution
Restriction endonucleases are used to cut DNA at specific sequences, facilitating gene cloning.
Correct Answer:
C
— Restriction endonuclease
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Q. Which enzyme is involved in the Krebs cycle during respiration? (2022)
A.
ATP synthase
B.
Hexokinase
C.
Citrate synthase
D.
Pyruvate kinase
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Solution
Citrate synthase is an enzyme involved in the Krebs cycle, catalyzing the first step of the cycle.
Correct Answer:
C
— Citrate synthase
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Q. Which enzyme is responsible for protein digestion in the stomach? (2021)
A.
Amylase
B.
Pepsin
C.
Trypsin
D.
Lipase
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Solution
Pepsin is the enzyme that digests proteins in the acidic environment of the stomach.
Correct Answer:
B
— Pepsin
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Q. Which enzyme is responsible for the digestion of carbohydrates in the mouth? (2021)
A.
Amylase
B.
Pepsin
C.
Lipase
D.
Trypsin
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Solution
Amylase is the enzyme that breaks down carbohydrates into simpler sugars in the mouth.
Correct Answer:
A
— Amylase
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Q. Which enzyme is responsible for unwinding the DNA double helix during replication? (2021)
A.
DNA polymerase
B.
Helicase
C.
Ligase
D.
Primase
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Solution
Helicase is the enzyme that unwinds the DNA double helix during the process of replication.
Correct Answer:
B
— Helicase
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Q. Which enzyme is secreted by the pancreas to aid in protein digestion? (2023)
A.
Amylase
B.
Pepsin
C.
Trypsin
D.
Lipase
Show solution
Solution
Trypsin is a pancreatic enzyme that helps in the digestion of proteins in the small intestine.
Correct Answer:
C
— Trypsin
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Q. Which enzyme is secreted by the pancreas to digest proteins? (2023)
A.
Amylase
B.
Pepsin
C.
Trypsin
D.
Lipase
Show solution
Solution
Trypsin is a proteolytic enzyme secreted by the pancreas that digests proteins in the small intestine.
Correct Answer:
C
— Trypsin
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Q. Which factor does NOT affect the rate of adsorption? (2023)
A.
Temperature
B.
Surface area of adsorbent
C.
Concentration of adsorbate
D.
Color of adsorbent
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Solution
The color of the adsorbent does not affect the rate of adsorption, while temperature, surface area, and concentration do.
Correct Answer:
D
— Color of adsorbent
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Q. Which force is primarily responsible for holding the nucleus together? (2022)
A.
Gravitational force
B.
Electromagnetic force
C.
Weak nuclear force
D.
Strong nuclear force
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Solution
The strong nuclear force is responsible for holding the protons and neutrons together in the nucleus.
Correct Answer:
D
— Strong nuclear force
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Q. Which force is responsible for holding the nucleus together? (2019)
A.
Gravitational force
B.
Electromagnetic force
C.
Weak nuclear force
D.
Strong nuclear force
Show solution
Solution
The strong nuclear force is responsible for holding the protons and neutrons together in the nucleus.
Correct Answer:
D
— Strong nuclear force
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Q. Which gas behaves most like an ideal gas under standard conditions? (2019)
A.
Helium
B.
Carbon dioxide
C.
Water vapor
D.
Ammonia
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Solution
Helium behaves most like an ideal gas under standard conditions due to its low intermolecular forces and small size.
Correct Answer:
A
— Helium
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Q. Which gas behaves most like an ideal gas? (2020)
A.
Helium
B.
Carbon dioxide
C.
Water vapor
D.
Ammonia
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Solution
Helium behaves most like an ideal gas because it is a monoatomic gas with weak intermolecular forces.
Correct Answer:
A
— Helium
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Q. Which gas is a byproduct of photosynthesis? (2023)
A.
Carbon dioxide
B.
Nitrogen
C.
Oxygen
D.
Methane
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Solution
Oxygen is released as a byproduct of photosynthesis during the light-dependent reactions.
Correct Answer:
C
— Oxygen
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Q. Which gas is evolved when an acid reacts with a carbonate? (2022)
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Solution
When an acid reacts with a carbonate, carbon dioxide (CO2) gas is evolved.
Correct Answer:
C
— CO2
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Q. Which gas is primarily responsible for the drive to breathe in healthy individuals? (2023)
A.
Oxygen
B.
Carbon dioxide
C.
Nitrogen
D.
Hydrogen
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Solution
Carbon dioxide levels in the blood primarily drive the urge to breathe; high levels stimulate the respiratory centers in the brain.
Correct Answer:
B
— Carbon dioxide
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Q. Which gas is primarily responsible for the regulation of breathing rate? (2022)
A.
Oxygen
B.
Carbon dioxide
C.
Nitrogen
D.
Hydrogen
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Solution
Carbon dioxide levels in the blood are the primary factor that regulates the rate of breathing.
Correct Answer:
B
— Carbon dioxide
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Q. Which gas is produced during the electrolysis of water? (2020) 2020
A.
Oxygen
B.
Nitrogen
C.
Carbon Dioxide
D.
Hydrogen
Show solution
Solution
During the electrolysis of water, oxygen is produced at the anode.
Correct Answer:
A
— Oxygen
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Q. Which gas is produced during the electrolysis of water? (2022)
A.
Oxygen
B.
Nitrogen
C.
Carbon Dioxide
D.
Hydrogen
Show solution
Solution
During the electrolysis of water, oxygen is produced at the anode.
Correct Answer:
A
— Oxygen
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Q. Which gas is produced when an acid reacts with a metal? (2023) 2023
A.
Oxygen
B.
Hydrogen
C.
Nitrogen
D.
Carbon Dioxide
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Solution
When an acid reacts with a metal, hydrogen gas is produced.
Correct Answer:
B
— Hydrogen
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Q. Which gas is produced when hydrochloric acid reacts with sodium bicarbonate? (2020)
A.
Oxygen
B.
Carbon Dioxide
C.
Hydrogen
D.
Nitrogen
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Solution
The reaction between hydrochloric acid (HCl) and sodium bicarbonate (NaHCO3) produces carbon dioxide (CO2) as one of the products.
Correct Answer:
B
— Carbon Dioxide
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Q. Which gas is released as a byproduct of photosynthesis? (2022)
A.
Carbon dioxide
B.
Oxygen
C.
Nitrogen
D.
Methane
Show solution
Solution
Oxygen is released as a byproduct of photosynthesis during the light-dependent reactions.
Correct Answer:
B
— Oxygen
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Q. Which gas is released during the process of respiration in plants? (2022)
A.
Oxygen
B.
Carbon dioxide
C.
Nitrogen
D.
Hydrogen
Show solution
Solution
Carbon dioxide is released as a byproduct during the process of respiration in plants.
Correct Answer:
B
— Carbon dioxide
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Q. Which gas law relates pressure and temperature of a gas at constant volume?
A.
Boyle's Law
B.
Charles's Law
C.
Gay-Lussac's Law
D.
Avogadro's Law
Show solution
Solution
Gay-Lussac's Law states that the pressure of a gas is directly proportional to its temperature at constant volume.
Correct Answer:
C
— Gay-Lussac's Law
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