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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. In a series RLC circuit, at resonance, the impedance is equal to which of the following? (2020)

A. Zero
B. R
C. XL
D. XC

Solution

At resonance in a series RLC circuit, the impedance (Z) is equal to the resistance (R) because the inductive and capacitive reactances cancel each other out.

Correct Answer: B — R

Q. In a series RLC circuit, what happens at resonance? (2020)

A. Impedance is minimum
B. Current is minimum
C. Voltage is maximum
D. Power factor is zero

Solution

At resonance in a series RLC circuit, the impedance is minimum, and the circuit behaves like a purely resistive circuit.

Correct Answer: A — Impedance is minimum

Q. In a series RLC circuit, what happens to the current when the circuit is at resonance? (2021)

A. It is maximum
B. It is minimum
C. It is zero
D. It is constant

Solution

At resonance in a series RLC circuit, the impedance is minimum, and thus the current is maximum.

Correct Answer: A — It is maximum

Q. In a series RLC circuit, what happens to the impedance at resonance? (2021)

A. Minimum
B. Maximum
C. Zero
D. Infinite

Solution

At resonance in a series RLC circuit, the impedance is at a minimum.

Correct Answer: A — Minimum

Q. In a series RLC circuit, what happens to the total impedance when the circuit is at resonance? (2022)

A. It is minimum
B. It is maximum
C. It is equal to R
D. It is equal to L

Solution

At resonance in a series RLC circuit, the total impedance is minimum and is equal to the resistance (R) of the circuit.

Correct Answer: C — It is equal to R

Q. In a simple cubic lattice, how many atoms are effectively present in one unit cell? (2019)

A. 1
B. 2
C. 4
D. 8

Solution

In a simple cubic lattice, there is 1 atom effectively present in one unit cell, as each corner atom contributes 1/8th of an atom to the unit cell.

Correct Answer: A — 1

Q. In a simple cubic lattice, how many atoms are present in one unit cell? (2019)

A. 1
B. 2
C. 4
D. 8

Solution

In a simple cubic lattice, there is 1 atom per unit cell (1/8 atom from each of the 8 corners).

Correct Answer: A — 1

Q. In a simple harmonic motion, the acceleration is always directed towards which point? (2022)

A. Equilibrium point
B. Maximum displacement
C. Minimum displacement
D. None of the above

Solution

In simple harmonic motion, the acceleration is always directed towards the equilibrium point, which is the position of rest.

Correct Answer: A — Equilibrium point

Q. In a simple harmonic motion, the maximum velocity occurs at which point? (2019)

A. At the mean position
B. At the extreme position
C. At half the amplitude
D. At the equilibrium position

Solution

Maximum velocity occurs at the mean position where the displacement is zero.

Correct Answer: A — At the mean position

Q. In a simple harmonic motion, the restoring force is directly proportional to the displacement. What is the nature of this force? (2022)

A. Conservative
B. Non-conservative
C. Frictional
D. Centrifugal

Solution

The restoring force in SHM is a conservative force as it can do work and store energy.

Correct Answer: A — Conservative

Q. In a simple harmonic oscillator, if the mass is doubled, what happens to the time period? (2022)

A. It remains the same
B. It doubles
C. It increases by √2
D. It decreases by √2

Solution

Time period (T) = 2π√(m/k), doubling m will double T.

Correct Answer: B — It doubles

Q. In a simple harmonic oscillator, if the mass is increased, what happens to the time period? (2019)

A. Increases
B. Decreases
C. Remains the same
D. Depends on amplitude

Solution

Time period (T) = 2π√(m/k). If mass (m) increases, T increases.

Correct Answer: A — Increases

Q. In a standing wave, what are the points called where there is no displacement? (2020)

A. Nodes
B. Antinodes
C. Crests
D. Troughs

Solution

In a standing wave, the points where there is no displacement are called nodes.

Correct Answer: A — Nodes

Q. In a test cross, an individual of unknown genotype is crossed with which of the following? (2021)

A. Homozygous dominant
B. Heterozygous
C. Homozygous recessive
D. Any individual

Solution

A test cross is performed by crossing an individual of unknown genotype with a homozygous recessive individual.

Correct Answer: C — Homozygous recessive

Q. In a test cross, an individual with a dominant phenotype is crossed with which of the following? (2021)

A. Homozygous dominant
B. Homozygous recessive
C. Heterozygous
D. None of the above

Solution

In a test cross, an individual with a dominant phenotype is crossed with a homozygous recessive individual to determine its genotype.

Correct Answer: B — Homozygous recessive

Q. In a test cross, an individual with an unknown genotype is crossed with which of the following? (2023)

A. Homozygous dominant
B. Heterozygous
C. Homozygous recessive
D. Any individual

Solution

In a test cross, the individual with an unknown genotype is crossed with a homozygous recessive individual.

Correct Answer: C — Homozygous recessive

Q. In a thin film of air between two glass plates, which of the following colors will be least affected by interference? (2022)

A. Red
B. Green
C. Blue
D. Violet

Solution

Red light has the longest wavelength and is least affected by interference effects in thin films compared to shorter wavelengths.

Correct Answer: A — Red

Q. In a thin film of oil on water, which color of light is most likely to be reflected? (2022)

A. Red
B. Blue
C. Green
D. Yellow

Solution

Due to the phenomenon of thin film interference, the color that is most prominently reflected depends on the thickness of the film and the wavelength of light. Typically, blue light is more likely to be reflected due to shorter wavelengths.

Correct Answer: B — Blue

Q. In a thin film of oil on water, which color will appear at the center of the pattern if the film thickness is such that it causes destructive interference for red light? (2022)

A. Blue
B. Green
C. Yellow
D. Red

Solution

Destructive interference for red light means red light is canceled out, leaving the shorter wavelengths (blue) visible.

Correct Answer: A — Blue

Q. In a thin film of soap, which color appears at the center of the pattern due to destructive interference? (2023)

A. Red
B. Blue
C. Green
D. Yellow

Solution

At the center, destructive interference occurs for red light due to its longer wavelength.

Correct Answer: A — Red

Q. In a transformer, if the primary coil has 100 turns and the secondary coil has 200 turns, what is the turns ratio? (2021)

A. 1:2
B. 2:1
C. 1:1
D. 3:1

Solution

The turns ratio is 100:200, which simplifies to 1:2.

Correct Answer: A — 1:2

Q. In a transformer, if the primary coil has 100 turns and the secondary coil has 50 turns, what is the turns ratio? (2023)

A. 2:1
B. 1:2
C. 1:1
D. 3:1

Solution

The turns ratio is 2:1, as the primary has twice the number of turns compared to the secondary.

Correct Answer: A — 2:1

Q. In a transformer, if the primary coil has more turns than the secondary coil, what type of transformer is it? (2021)

A. Step-up transformer
B. Step-down transformer
C. Isolation transformer
D. Auto transformer

Solution

If the primary coil has more turns than the secondary coil, it is a step-down transformer.

Correct Answer: B — Step-down transformer

Q. In a uniform electric field, the potential difference between two points is 10 V. If the distance between these points is 2 m, what is the strength of the electric field? (2023)

A. 5 N/C
B. 10 N/C
C. 20 N/C
D. 2 N/C

Solution

E = V/d = 10 V / 2 m = 5 N/C.

Correct Answer: A — 5 N/C

Q. In a Zener diode, what is the purpose of the reverse breakdown region? (2020)

A. To increase voltage
B. To regulate voltage
C. To decrease current
D. To store energy

Solution

The reverse breakdown region in a Zener diode allows it to regulate voltage by maintaining a constant output voltage.

Correct Answer: B — To regulate voltage

Q. In an AC circuit, if the current lags the voltage by 30 degrees, what is the power factor? (2023)

A. 0.866
B. 0.5
C. 1
D. 0.707

Solution

The power factor (PF) is given by cos(θ). If θ = 30 degrees, PF = cos(30°) = √3/2 ≈ 0.866.

Correct Answer: A — 0.866

Q. In an AC circuit, if the power factor is 0.5, what is the angle φ between the voltage and current? (2019)

A. 30 degrees
B. 60 degrees
C. 90 degrees
D. 45 degrees

Solution

The power factor (cosφ) is 0.5, which corresponds to an angle φ of 60 degrees.

Correct Answer: B — 60 degrees

Q. In an AC circuit, if the voltage is given by V(t) = V0 sin(ωt), what is the expression for the current if the circuit is purely inductive? (2023)

A. I(t) = I0 sin(ωt)
B. I(t) = I0 sin(ωt - π/2)
C. I(t) = I0 cos(ωt)
D. I(t) = I0 cos(ωt + π/2)

Solution

In a purely inductive circuit, the current lags the voltage by 90 degrees (π/2 radians). Therefore, I(t) = I0 sin(ωt - π/2).

Correct Answer: B — I(t) = I0 sin(ωt - π/2)

Q. In an AC circuit, if the voltage is given by V(t) = V_0 sin(ωt), what is the expression for the current if the circuit is purely inductive? (2023)

A. I(t) = I_0 sin(ωt)
B. I(t) = I_0 sin(ωt - π/2)
C. I(t) = I_0 cos(ωt)
D. I(t) = I_0 cos(ωt + π/2)

Solution

In a purely inductive circuit, the current lags the voltage by 90 degrees (or π/2 radians). Therefore, I(t) = I_0 sin(ωt - π/2).

Correct Answer: B — I(t) = I_0 sin(ωt - π/2)

Q. In an AC circuit, if the voltage is given by V(t) = V₀ sin(ωt), what is the expression for the current through a capacitor? (2022)

A. I(t) = C dV/dt
B. I(t) = V₀ sin(ωt)
C. I(t) = V₀ cos(ωt)
D. I(t) = V₀ sin(ωt)/R

Solution

The current through a capacitor is given by I(t) = C dV/dt. For V(t) = V₀ sin(ωt), the current can be derived from this expression.

Correct Answer: A — I(t) = C dV/dt

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