Q. Which hormone regulates blood pressure by affecting blood vessel constriction? (2023)
A.
Insulin
B.
Adrenaline
C.
Aldosterone
D.
Angiotensin II
Show solution
Solution
Angiotensin II is a potent vasoconstrictor that plays a key role in regulating blood pressure.
Correct Answer:
D
— Angiotensin II
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Q. Which hormone regulates blood pressure by causing vasoconstriction? (2019)
A.
Insulin
B.
Adrenaline
C.
Aldosterone
D.
Angiotensin II
Show solution
Solution
Angiotensin II is a potent vasoconstrictor that plays a key role in regulating blood pressure.
Correct Answer:
D
— Angiotensin II
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Q. Which hormone regulates the production of red blood cells? (2019)
A.
Insulin
B.
Erythropoietin
C.
Adrenaline
D.
Thyroxine
Show solution
Solution
Erythropoietin is a hormone produced by the kidneys that stimulates the production of red blood cells in the bone marrow.
Correct Answer:
B
— Erythropoietin
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Q. Which hormone regulates the reabsorption of water in the kidneys? (2021)
A.
Aldosterone
B.
Antidiuretic hormone (ADH)
C.
Insulin
D.
Cortisol
Show solution
Solution
Antidiuretic hormone (ADH) regulates the reabsorption of water in the kidneys, reducing urine output.
Correct Answer:
B
— Antidiuretic hormone (ADH)
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Q. Which hormone regulates the sleep-wake cycle? (2022)
A.
Melatonin
B.
Serotonin
C.
Cortisol
D.
Adrenaline
Show solution
Solution
Melatonin is a hormone produced by the pineal gland that regulates the sleep-wake cycle, promoting sleep.
Correct Answer:
A
— Melatonin
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Q. Which hormone triggers ovulation? (2019)
A.
Follicle-stimulating hormone
B.
Luteinizing hormone
C.
Estrogen
D.
Progesterone
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Solution
Luteinizing hormone (LH) triggers ovulation, leading to the release of a mature egg from the ovary.
Correct Answer:
B
— Luteinizing hormone
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Q. Which hormone triggers the onset of labor? (2019)
A.
Oxytocin
B.
Estrogen
C.
Progesterone
D.
Relaxin
Show solution
Solution
Oxytocin is the hormone that triggers the onset of labor by stimulating uterine contractions.
Correct Answer:
A
— Oxytocin
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Q. Which instrument is used to measure atmospheric pressure? (2020)
A.
Barometer
B.
Thermometer
C.
Anemometer
D.
Hygrometer
Show solution
Solution
A barometer is used to measure atmospheric pressure.
Correct Answer:
A
— Barometer
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Q. Which ion is primarily responsible for depolarization during an action potential? (2023)
A.
Sodium (Na+)
B.
Potassium (K+)
C.
Calcium (Ca2+)
D.
Chloride (Cl-)
Show solution
Solution
Sodium ions (Na+) rush into the neuron during depolarization, causing the membrane potential to become more positive.
Correct Answer:
A
— Sodium (Na+)
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Q. Which ion is primarily responsible for the depolarization phase of an action potential? (2023)
A.
Sodium (Na+)
B.
Potassium (K+)
C.
Calcium (Ca2+)
D.
Chloride (Cl-)
Show solution
Solution
Sodium ions (Na+) rush into the neuron during depolarization, causing the membrane potential to become more positive.
Correct Answer:
A
— Sodium (Na+)
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Q. Which isotope of hydrogen is also known as deuterium? (2021)
A.
Protium
B.
Tritium
C.
Hydrogen-1
D.
Hydrogen-2
Show solution
Solution
Deuterium is the isotope of hydrogen with one neutron, also referred to as Hydrogen-2.
Correct Answer:
D
— Hydrogen-2
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Q. Which isotope of hydrogen is also known as heavy hydrogen? (2020)
A.
Protium
B.
Deuterium
C.
Tritium
D.
Hydrogen-1
Show solution
Solution
Deuterium is known as heavy hydrogen because it has one neutron in addition to the single proton.
Correct Answer:
B
— Deuterium
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Q. Which kingdom includes organisms that are unicellular and prokaryotic? (2019)
A.
Plantae
B.
Animalia
C.
Fungi
D.
Monera
Show solution
Solution
The kingdom Monera includes unicellular and prokaryotic organisms.
Correct Answer:
D
— Monera
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Q. Which kingdom is characterized by organisms that are multicellular and autotrophic? (2022)
A.
Animalia
B.
Fungi
C.
Plantae
D.
Monera
Show solution
Solution
The kingdom Plantae is characterized by multicellular and autotrophic organisms.
Correct Answer:
C
— Plantae
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Q. Which kingdom is characterized by organisms that are primarily autotrophic? (2021)
A.
Animalia
B.
Fungi
C.
Plantae
D.
Monera
Show solution
Solution
The kingdom Plantae is characterized by autotrophic organisms that perform photosynthesis.
Correct Answer:
C
— Plantae
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Q. Which law states that for every action, there is an equal and opposite reaction? (2022)
A.
Newton's First Law
B.
Newton's Second Law
C.
Newton's Third Law
D.
Law of Conservation of Momentum
Show solution
Solution
Newton's Third Law states that for every action, there is an equal and opposite reaction.
Correct Answer:
C
— Newton's Third Law
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Q. Which law states that the current through a conductor between two points is directly proportional to the voltage across the two points? (2021)
A.
Ohm's Law
B.
Kirchhoff's Law
C.
Faraday's Law
D.
Ampere's Law
Show solution
Solution
Ohm's Law states that the current (I) through a conductor is directly proportional to the voltage (V) across it, given by the formula V = IR.
Correct Answer:
A
— Ohm's Law
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Q. Which law states that the entropy of an isolated system always increases? (2021)
A.
Zeroth law of thermodynamics
B.
First law of thermodynamics
C.
Second law of thermodynamics
D.
Third law of thermodynamics
Show solution
Solution
The second law of thermodynamics states that the entropy of an isolated system will always increase over time.
Correct Answer:
C
— Second law of thermodynamics
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Q. Which law states that the entropy of an isolated system never decreases? (2021)
A.
Zeroth law of thermodynamics
B.
First law of thermodynamics
C.
Second law of thermodynamics
D.
Third law of thermodynamics
Show solution
Solution
The second law of thermodynamics states that the entropy of an isolated system never decreases over time.
Correct Answer:
C
— Second law of thermodynamics
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Q. Which law states that the heat absorbed or released by a substance is proportional to the change in temperature? (2021)
A.
Boyle's Law
B.
Charles's Law
C.
Newton's Law of Cooling
D.
Calorimetry
Show solution
Solution
Calorimetry states that the heat absorbed or released by a substance is proportional to the change in temperature.
Correct Answer:
D
— Calorimetry
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Q. Which law states that the induced electromotive force (emf) in a closed loop is equal to the negative rate of change of magnetic flux through the loop? (2022)
A.
Faraday's Law
B.
Lenz's Law
C.
Ohm's Law
D.
Ampere's Law
Show solution
Solution
Faraday's Law states that the induced emf in a closed loop is equal to the negative rate of change of magnetic flux through the loop.
Correct Answer:
A
— Faraday's Law
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Q. Which law states that the induced electromotive force is proportional to the rate of change of magnetic flux? (2022)
A.
Faraday's Law
B.
Lenz's Law
C.
Ohm's Law
D.
Ampere's Law
Show solution
Solution
Faraday's Law of electromagnetic induction states that the induced electromotive force in any closed circuit is equal to the rate of change of magnetic flux through the circuit.
Correct Answer:
A
— Faraday's Law
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Q. Which law states that the induced EMF in a circuit is proportional to the rate of change of magnetic flux through the circuit? (2022)
A.
Faraday's Law
B.
Lenz's Law
C.
Ohm's Law
D.
Ampere's Law
Show solution
Solution
Faraday's Law states that the induced EMF is proportional to the rate of change of magnetic flux.
Correct Answer:
A
— Faraday's Law
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Q. Which law states that the induced EMF in a closed loop is equal to the negative rate of change of magnetic flux through the loop? (2022)
A.
Faraday's Law
B.
Lenz's Law
C.
Ohm's Law
D.
Ampere's Law
Show solution
Solution
Faraday's Law states that the induced EMF in a closed loop is equal to the negative rate of change of magnetic flux through the loop.
Correct Answer:
A
— Faraday's Law
Learn More →
Q. Which law states that the pressure of a gas is directly proportional to its temperature at constant volume? (2019)
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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Q. Which law states that the rate of heat transfer through a material is proportional to the temperature difference? (2022)
A.
Newton's Law of Cooling
B.
Fourier's Law
C.
Stefan-Boltzmann Law
D.
Boyle's Law
Show solution
Solution
Fourier's Law states that the rate of heat transfer through a material is proportional to the temperature difference across it.
Correct Answer:
B
— Fourier's Law
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Q. Which macromolecule is primarily responsible for genetic information? (2020)
A.
Proteins
B.
Lipids
C.
Carbohydrates
D.
Nucleic Acids
Show solution
Solution
Nucleic acids, such as DNA and RNA, are responsible for storing and transmitting genetic information.
Correct Answer:
D
— Nucleic Acids
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Q. Which macromolecule is primarily responsible for storing genetic information? (2020)
A.
Proteins
B.
Carbohydrates
C.
Lipids
D.
Nucleic acids
Show solution
Solution
Nucleic acids, such as DNA and RNA, are responsible for storing and transmitting genetic information.
Correct Answer:
D
— Nucleic acids
Learn More →
Q. Which microbe is primarily responsible for the fermentation of vinegar? (2021)
A.
Yeast
B.
Lactic acid bacteria
C.
Acetic acid bacteria
D.
Molds
Show solution
Solution
Acetic acid bacteria are responsible for the fermentation process that converts alcohol into vinegar.
Correct Answer:
C
— Acetic acid bacteria
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Q. Which microbe is primarily responsible for the production of vinegar? (2020)
A.
Yeast
B.
Lactic acid bacteria
C.
Acetic acid bacteria
D.
Molds
Show solution
Solution
Acetic acid bacteria are responsible for the fermentation process that produces vinegar.
Correct Answer:
C
— Acetic acid bacteria
Learn More →
Showing 1921 to 1950 of 2984 (100 Pages)
NEET MCQ & Objective Questions
The National Eligibility cum Entrance Test (NEET) is a crucial examination for aspiring medical students in India. Scoring well in NEET can open doors to prestigious medical colleges, making it essential for students to prepare effectively. Practicing NEET MCQs and objective questions not only enhances understanding but also boosts confidence, ensuring you are well-prepared for the exam. Engaging with practice questions helps identify important topics and improves your ability to tackle various question formats.
What You Will Practise Here
Human Anatomy and Physiology
Biochemistry and Molecular Biology
Genetics and Evolution
Plant and Animal Physiology
Ecology and Environment
Physics Concepts Relevant to Biology
Important NEET questions on Chemical Bonding and Reactions
Exam Relevance
NEET is aligned with the syllabus of CBSE and various State Boards, ensuring that the topics covered are relevant for both school exams and competitive tests like JEE. Common question patterns include multiple-choice questions that assess conceptual understanding and application of knowledge. By focusing on NEET objective questions, students can familiarize themselves with the exam format and improve their time management skills during the actual test.
Common Mistakes Students Make
Misinterpreting questions due to lack of careful reading.
Overlooking the importance of diagrams and visual aids in biology.
Neglecting to review basic concepts that are foundational for advanced topics.
Confusing similar terms and definitions, especially in biochemistry.
FAQs
Question: How can I improve my NEET MCQ solving skills?Answer: Regular practice with NEET MCQ questions and reviewing explanations for both correct and incorrect answers can significantly enhance your skills.
Question: Are there specific topics I should focus on for NEET preparation?Answer: Yes, focus on high-weightage topics like Human Physiology, Genetics, and Ecology, as they frequently appear in exams.
Start your journey towards success by solving NEET practice MCQs today! Test your understanding, identify your strengths and weaknesses, and prepare effectively for your upcoming exams.
