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Medical Entrance MCQ & Objective Questions

Preparing for medical entrance exams is a crucial step for aspiring doctors in India. Mastering MCQs and objective questions can significantly enhance your exam performance. By practicing these questions, you not only familiarize yourself with the exam format but also strengthen your understanding of important concepts and topics essential for scoring better.

What You Will Practise Here

Key concepts in Biology, Chemistry, and Physics relevant to medical entrance.
Important formulas and definitions that frequently appear in exams.
Diagrams and illustrations to help visualize complex processes.
Practice questions based on previous years' medical entrance exams.
Conceptual clarity through detailed explanations of difficult topics.
Strategies for tackling tricky MCQs and objective questions.
Time management techniques for effective exam preparation.

Exam Relevance

Medical entrance topics are integral to various examinations like NEET, JEE, and state board assessments. These subjects often feature MCQs that test your grasp of fundamental concepts and application skills. Common question patterns include multiple-choice questions that assess both theoretical knowledge and practical understanding, making it vital to practice regularly with important Medical Entrance questions for exams.

Common Mistakes Students Make

Overlooking the importance of reading questions carefully, leading to misinterpretation.
Neglecting to revise basic concepts, which can result in confusion during exams.
Relying solely on rote memorization instead of understanding the underlying principles.
Failing to practice time management, which can hinder performance in timed exams.

FAQs

Question: What are Medical Entrance MCQ questions?
Answer: Medical Entrance MCQ questions are multiple-choice questions designed to test your knowledge and understanding of subjects relevant to medical entrance exams.

Question: How can I improve my performance in Medical Entrance objective questions?
Answer: Regular practice of MCQs, understanding key concepts, and reviewing previous years' papers can significantly improve your performance.

Start your journey towards success by solving practice MCQs today! Test your understanding and build confidence as you prepare for your medical entrance exams.

NEET

Q. If the charge on a capacitor is doubled, what happens to the electric field between the plates? (2022)

A. It doubles
B. It halves
C. It remains the same
D. It quadruples

Solution

The electric field E between the plates of a capacitor is directly proportional to the charge. If the charge is doubled, the electric field also doubles.

Correct Answer: A — It doubles

Q. If the charge on an object is tripled, what happens to the electric field produced by that charge? (2020)

A. It triples
B. It halves
C. It remains the same
D. It quadruples

Solution

The electric field E is directly proportional to the charge, so tripling the charge will triple the electric field.

Correct Answer: A — It triples

Q. If the current flowing through a conductor is 3A and the resistance is 2Ω, what is the voltage across the conductor? (2023)

A. 1.5V
B. 3V
C. 6V
D. 9V

Solution

Using Ohm's Law, V = I * R = 3A * 2Ω = 6V.

Correct Answer: C — 6V

Q. If the current flowing through a conductor is 3A and the resistance is 6Ω, what is the voltage across the conductor? (2023)

A. 9V
B. 18V
C. 3V
D. 6V

Solution

Using Ohm's Law, V = I * R = 3A * 6Ω = 18V.

Correct Answer: A — 9V

Q. If the current flowing through a resistor is 2A and the voltage across it is 6V, what is the resistance? (2022)

A. 3Ω
B. 2Ω
C. 6Ω
D. 12Ω

Solution

Using Ohm's Law, R = V / I = 6V / 2A = 3Ω.

Correct Answer: A — 3Ω

Q. If the current flowing through a resistor is 3A and the voltage across it is 9V, what is the resistance? (2022)

A. 1Ω
B. 2Ω
C. 3Ω
D. 4Ω

Solution

Using Ohm's Law, R = V / I = 9V / 3A = 3Ω.

Correct Answer: C — 3Ω

Q. If the current through a conductor is doubled, what happens to the heat produced in the conductor? (2020)

A. It halves
B. It doubles
C. It quadruples
D. It remains the same

Solution

The heat produced is proportional to the square of the current (H ∝ I²), so if I is doubled, heat becomes 4 times.

Correct Answer: C — It quadruples

Q. If the current through a resistor is 2A and the resistance is 5Ω, what is the voltage across the resistor? (2022)

A. 10V
B. 5V
C. 2V
D. 7V

Solution

Using Ohm's Law, V = I * R = 2A * 5Ω = 10V.

Correct Answer: A — 10V

Q. If the current through a resistor is 5A and the resistance is 10Ω, what is the voltage across the resistor? (2022)

A. 50V
B. 5V
C. 10V
D. 15V

Solution

Using Ohm's Law, V = I * R = 5A * 10Ω = 50V.

Correct Answer: A — 50V

Q. If the diameter of a wire is halved while keeping the length constant, what happens to its tensile strength? (2019)

A. It doubles
B. It halves
C. It quadruples
D. It remains the same

Solution

Tensile strength is inversely proportional to the cross-sectional area. Halving the diameter reduces the area to a quarter, thus tensile strength quadruples.

Correct Answer: C — It quadruples

Q. If the distance between the plates of a capacitor is halved, what happens to the capacitance? (2019)

A. It doubles
B. It halves
C. It remains the same
D. It quadruples

Solution

If the distance d is halved, the capacitance C = εA/d will double.

Correct Answer: A — It doubles

Q. If the distance between the slits in a double-slit experiment is halved, what happens to the angular position of the first-order maximum? (2023)

A. It doubles
B. It halves
C. It remains the same
D. It quadruples

Solution

If the slit separation d is halved, the angle θ for the first-order maximum (d sin θ = λ) will increase, effectively doubling the angle.

Correct Answer: A — It doubles

Q. If the distance between two masses is doubled, what happens to the gravitational force between them? (2020)

A. It doubles
B. It halves
C. It becomes one-fourth
D. It becomes four times

Solution

According to the inverse square law, if the distance is doubled, the force becomes 1/(2^2) = 1/4 of the original force.

Correct Answer: C — It becomes one-fourth

Q. If the distance between two point charges is tripled, how does the electrostatic force between them change? (2020)

A. It triples
B. It halves
C. It becomes one-ninth
D. It remains the same

Solution

According to Coulomb's law, the force F is inversely proportional to the square of the distance (F ∝ 1/r^2). If r is tripled, F becomes 1/9 of its original value.

Correct Answer: C — It becomes one-ninth

Q. If the distance from the slits to the screen in a double-slit experiment is increased, what happens to the fringe pattern? (2023)

A. Fringe width decreases
B. Fringe width increases
C. Fringe visibility decreases
D. Fringe pattern disappears

Solution

Increasing the distance from the slits to the screen increases the fringe width, as fringe width β is proportional to the distance.

Correct Answer: B — Fringe width increases

Q. If the electric field between the plates of a capacitor is E, what is the potential difference between the plates separated by a distance d? (2020)

A. E/d
B. Ed
C. d/E
D. E*d

Solution

The potential difference (V) between the plates is given by V = Ed, where E is the electric field and d is the distance between the plates.

Correct Answer: B — Ed

Q. If the equilibrium constant Kc for a reaction is 10, what is the value of Kc for the reverse reaction? (2020)

A. 0.1
B. 10
C. 1
D. 100

Solution

For the reverse reaction, Kc is the reciprocal of the forward reaction. Therefore, Kc (reverse) = 1/Kc (forward) = 1/10 = 0.1.

Correct Answer: A — 0.1

Q. If the freezing point of a solution is -5°C, what is the molality of the solution if the freezing point depression constant (Kf) is 1.86°C kg/mol? (2022)

A. 1.34 m
B. 2.68 m
C. 0.5 m
D. 3.72 m

Solution

ΔTf = Kf * m; -5 = -1.86 * m; m = 5 / 1.86 = 2.68 m.

Correct Answer: B — 2.68 m

Q. If the freezing point of pure water is 0 °C, what will be the freezing point of a solution containing 1 mole of NaCl in 1 kg of water? (2023)

A. -1.86 °C
B. -3.72 °C
C. -2.26 °C
D. -0.93 °C

Solution

Freezing point depression = i * Kf * m = 2 * 1.86 °C kg/mol * 1 mol/kg = 3.72 °C. Thus, freezing point = 0 - 3.72 = -3.72 °C.

Correct Answer: B — -3.72 °C

Q. If the freezing point of pure water is 0°C, what will be the freezing point of a 1 molal solution of NaCl? (2022)

A. -1.86°C
B. -3.72°C
C. -2.52°C
D. -0.52°C

Solution

Freezing point depression = i * Kf * m = 2 * 1.86 * 1 = 3.72°C. Therefore, freezing point = 0 - 3.72 = -1.86°C.

Correct Answer: A — -1.86°C

Q. If the frequency of a simple harmonic oscillator is doubled, what happens to its period? (2021)

A. It doubles
B. It halves
C. It remains the same
D. It quadruples

Solution

The period T is inversely proportional to frequency f. If f is doubled, T is halved.

Correct Answer: B — It halves

Q. If the frequency of an AC source is 50 Hz, what is the time period of the AC signal? (2019)

A. 0.02 s
B. 0.01 s
C. 0.5 s
D. 1 s

Solution

The time period (T) is the reciprocal of frequency (f). Therefore, T = 1/f = 1/50 Hz = 0.02 s.

Correct Answer: A — 0.02 s

Q. If the frequency of an AC source is increased, what happens to the inductive reactance? (2019)

A. Increases
B. Decreases
C. Remains constant
D. Becomes zero

Solution

Inductive reactance (X_L) is directly proportional to frequency (f). Therefore, if frequency increases, X_L decreases.

Correct Answer: B — Decreases

Q. If the inductance of a coil is doubled, what happens to its inductive reactance at a constant frequency? (2022)

A. It doubles
B. It halves
C. It remains the same
D. It quadruples

Solution

Inductive reactance (X_L) is given by X_L = 2πfL. If the inductance (L) is doubled, X_L will also double.

Correct Answer: A — It doubles

Q. If the length of a wire is doubled while keeping the diameter constant, what happens to its resistance? (2019)

A. It doubles
B. It halves
C. It quadruples
D. It remains the same

Solution

Resistance (R) is directly proportional to length (L). If length is doubled, resistance also doubles.

Correct Answer: A — It doubles

Q. If the magnetic flux through a coil changes from 0.5 Wb to 0.2 Wb in 2 seconds, what is the average induced emf? (2023)

A. 150 V
B. 100 V
C. 75 V
D. 50 V

Solution

Average induced emf = -ΔΦ/Δt = -(0.2 - 0.5)/2 = 0.15 V = 150 V.

Correct Answer: B — 100 V

Q. If the magnetic flux through a coil changes, what happens to the induced EMF? (2023)

A. It remains constant
B. It increases
C. It decreases
D. It is induced

Solution

An induced EMF is generated when there is a change in magnetic flux through a coil.

Correct Answer: D — It is induced

Q. If the mass of the Earth were to double while its radius remains the same, what would happen to the acceleration due to gravity? (2022)

A. It would double
B. It would remain the same
C. It would halve
D. It would increase by a factor of four

Solution

If the mass of the Earth doubles, the acceleration due to gravity also doubles, as it is directly proportional to mass.

Correct Answer: A — It would double

Q. If the moment of inertia of a body is doubled while keeping the angular velocity constant, what happens to its angular momentum? (2019)

A. It doubles
B. It remains the same
C. It halves
D. It quadruples

Solution

Angular momentum L = Iω, so if I is doubled and ω remains constant, L also doubles.

Correct Answer: A — It doubles

Q. If the potential at a point is 5 V and the electric field is 2 V/m, what is the distance from the reference point? (2023)

A. 2.5 m
B. 10 m
C. 7.5 m
D. 5 m

Solution

Distance (d) = Potential (V) / Electric field (E) = 5 V / 2 V/m = 2.5 m.

Correct Answer: B — 10 m

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