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 frequency of a wave with a period of 0.5 seconds? (2019)
A.
2 Hz
B.
1 Hz
C.
0.5 Hz
D.
4 Hz
Show solution
Solution
Frequency (f) = 1/Period (T) = 1/0.5 s = 2 Hz.
Correct Answer:
A
— 2 Hz
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Q. What is the frequency of a wave with a speed of 300 m/s and a wavelength of 3 m? (2023)
A.
100 Hz
B.
150 Hz
C.
200 Hz
D.
250 Hz
Show solution
Solution
Frequency (f) = speed (v) / wavelength (λ) = 300 m/s / 3 m = 100 Hz.
Correct Answer:
B
— 150 Hz
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Q. What is the frequency of a wave with a wavelength of 2 m and a speed of 340 m/s?
A.
170 Hz
B.
340 Hz
C.
85 Hz
D.
420 Hz
Show solution
Solution
Frequency (f) is given by the formula f = speed / wavelength. Here, f = 340 m/s / 2 m = 170 Hz.
Correct Answer:
A
— 170 Hz
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Q. What is the function of a diode in a circuit? (2020)
A.
To store energy
B.
To amplify signals
C.
To allow current to flow in one direction
D.
To resist current flow
Show solution
Solution
A diode allows current to flow in one direction only, acting as a one-way valve for electric current.
Correct Answer:
C
— To allow current to flow in one direction
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Q. What is the function of a promoter in a gene? (2023)
A.
To enhance gene expression
B.
To initiate transcription
C.
To terminate transcription
D.
To bind to ribosomes
Show solution
Solution
A promoter is a DNA sequence that initiates transcription of a gene by providing a binding site for RNA polymerase.
Correct Answer:
B
— To initiate transcription
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Q. What is the function of a promoter in a recombinant DNA molecule? (2023)
A.
To initiate transcription
B.
To terminate transcription
C.
To enhance translation
D.
To degrade RNA
Show solution
Solution
A promoter is a DNA sequence that initiates transcription of a particular gene, allowing for gene expression.
Correct Answer:
A
— To initiate transcription
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Q. What is the function of a selectable marker in a cloning vector? (2023)
A.
To enhance gene expression
B.
To allow for the identification of successfully transformed cells
C.
To provide energy for the cell
D.
To stabilize the DNA
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Solution
Selectable markers are genes that confer resistance to antibiotics or other substances, allowing for the identification of cells that have successfully taken up the vector.
Correct Answer:
B
— To allow for the identification of successfully transformed cells
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Q. What is the function of a transistor in a circuit? (2021)
A.
Amplification
B.
Rectification
C.
Capacitance
D.
Inductance
Show solution
Solution
A transistor is primarily used for amplification of signals in electronic circuits.
Correct Answer:
A
— Amplification
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Q. What is the function of bile in digestion? (2022)
A.
Breaks down proteins
B.
Emulsifies fats
C.
Digests carbohydrates
D.
Absorbs vitamins
Show solution
Solution
Bile emulsifies fats, making them easier to digest by lipases.
Correct Answer:
B
— Emulsifies fats
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Q. What is the function of cartilage in the body? (2022)
A.
Support and flexibility
B.
Storage of fat
C.
Transmission of impulses
D.
Protection
Show solution
Solution
Cartilage provides support and flexibility in the body.
Correct Answer:
A
— Support and flexibility
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Q. What is the function of chloroplasts? (2023)
A.
Respiration
B.
Photosynthesis
C.
Digestion
D.
Reproduction
Show solution
Solution
Chloroplasts are responsible for photosynthesis, converting light energy into chemical energy in plants.
Correct Answer:
B
— Photosynthesis
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Q. What is the function of DNA polymerase? (2021)
A.
Synthesizes RNA
B.
Replicates DNA
C.
Repairs DNA
D.
Transcribes DNA
Show solution
Solution
DNA polymerase is an enzyme that synthesizes new strands of DNA during replication.
Correct Answer:
B
— Replicates DNA
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Q. What is the function of glucagon? (2019)
A.
Lower blood sugar
B.
Increase blood sugar
C.
Regulate metabolism
D.
Stimulate growth
Show solution
Solution
Glucagon is a hormone produced by the pancreas that raises blood sugar levels by promoting the conversion of glycogen to glucose in the liver.
Correct Answer:
B
— Increase blood sugar
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Q. What is the function of lysosomes? (2018)
A.
Energy production
B.
Digestion of macromolecules
C.
Protein synthesis
D.
Cell division
Show solution
Solution
Lysosomes contain digestive enzymes that break down macromolecules, old cell parts, and microorganisms.
Correct Answer:
B
— Digestion of macromolecules
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Q. What is the function of mRNA in protein synthesis? (2021)
A.
Transports amino acids
B.
Carries genetic code from DNA
C.
Forms ribosomes
D.
Catalyzes reactions
Show solution
Solution
mRNA (messenger RNA) carries the genetic code from DNA to the ribosome, where proteins are synthesized.
Correct Answer:
B
— Carries genetic code from DNA
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Q. What is the function of NADP+ in photosynthesis? (2019)
A.
Energy storage
B.
Electron carrier
C.
Carbon fixation
D.
Light absorption
Show solution
Solution
NADP+ acts as an electron carrier, becoming NADPH during the light-dependent reactions.
Correct Answer:
B
— Electron carrier
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Q. What is the function of nervous tissue? (2023)
A.
Support
B.
Movement
C.
Transmission of impulses
D.
Protection
Show solution
Solution
The function of nervous tissue is the transmission of impulses.
Correct Answer:
C
— Transmission of impulses
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Q. What is the function of oxytocin in the human body? (2023)
A.
Stimulate uterine contractions
B.
Regulate metabolism
C.
Increase blood sugar
D.
Promote sleep
Show solution
Solution
Oxytocin is a hormone that stimulates uterine contractions during childbirth and is also involved in social bonding.
Correct Answer:
A
— Stimulate uterine contractions
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Q. What is the function of parathyroid hormone (PTH)? (2022)
A.
Increase calcium levels in the blood
B.
Decrease calcium levels in the blood
C.
Regulate blood sugar
D.
Stimulate red blood cell production
Show solution
Solution
Parathyroid hormone (PTH) increases calcium levels in the blood by stimulating the release of calcium from bones and increasing calcium absorption in the intestines.
Correct Answer:
A
— Increase calcium levels in the blood
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Q. What is the function of parathyroid hormone? (2022)
A.
Increase calcium levels in the blood
B.
Decrease calcium levels in the blood
C.
Regulate blood sugar
D.
Stimulate growth
Show solution
Solution
Parathyroid hormone increases calcium levels in the blood by promoting the release of calcium from bones and increasing absorption in the intestines.
Correct Answer:
A
— Increase calcium levels in the blood
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Q. What is the function of petals in a flower? (2020)
A.
Support the flower
B.
Attract pollinators
C.
Produce ovules
D.
Store nutrients
Show solution
Solution
Petals serve to attract pollinators with their color and scent.
Correct Answer:
B
— Attract pollinators
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Q. What is the function of phosphorus in plants? (2021)
A.
Energy transfer
B.
Water absorption
C.
Cell wall formation
D.
Photosynthesis
Show solution
Solution
Phosphorus is crucial for energy transfer in plants, particularly in the form of ATP (adenosine triphosphate).
Correct Answer:
A
— Energy transfer
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Q. What is the function of plasma in the blood? (2023)
A.
Transport oxygen
B.
Fight infections
C.
Clotting
D.
Transport nutrients and waste
Show solution
Solution
Plasma is the liquid component of blood that transports nutrients, hormones, and waste products.
Correct Answer:
D
— Transport nutrients and waste
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Q. What is the function of ribosomes in a cell? (2023)
A.
DNA replication
B.
Protein synthesis
C.
Energy production
D.
Cell division
Show solution
Solution
Ribosomes are the cellular structures responsible for protein synthesis.
Correct Answer:
B
— Protein synthesis
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Q. What is the function of ribosomes in the cell? (2019)
A.
Energy production
B.
Protein synthesis
C.
Lipid synthesis
D.
DNA replication
Show solution
Solution
Ribosomes are the sites of protein synthesis, translating messenger RNA into polypeptide chains.
Correct Answer:
B
— Protein synthesis
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Q. What is the function of ribosomes? (2021)
A.
DNA replication
B.
Protein synthesis
C.
Energy production
D.
Cell division
Show solution
Solution
Ribosomes are the cellular structures responsible for protein synthesis.
Correct Answer:
B
— Protein synthesis
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Q. What is the function of sclerenchyma tissue? (2022)
A.
Storage
B.
Photosynthesis
C.
Support and protection
D.
Transport
Show solution
Solution
Sclerenchyma tissue provides support and protection to the plant due to its thick, lignified cell walls.
Correct Answer:
C
— Support and protection
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Q. What is the function of stomata in plants? (2019)
A.
Water absorption
B.
Gas exchange
C.
Nutrient uptake
D.
Photosynthesis
Show solution
Solution
Stomata are small openings on leaves that facilitate gas exchange, allowing CO2 in and O2 out.
Correct Answer:
B
— Gas exchange
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Q. What is the function of the autonomic nervous system? (2023)
A.
To control voluntary muscle movements
B.
To regulate involuntary bodily functions
C.
To process sensory information
D.
To coordinate reflex actions
Show solution
Solution
The autonomic nervous system regulates involuntary bodily functions such as heart rate and digestion.
Correct Answer:
B
— To regulate involuntary bodily functions
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Q. What is the function of the blood-brain barrier? (2022)
A.
To allow all substances to enter the brain
B.
To protect the brain from harmful substances
C.
To facilitate neurotransmitter release
D.
To enhance nerve impulse conduction
Show solution
Solution
The blood-brain barrier protects the brain from harmful substances while allowing essential nutrients to pass through.
Correct Answer:
B
— To protect the brain from harmful substances
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