Category: MDCAT Entry Test Preparation MCQs

The most common symptom of gonorrhea in males is?

A. Skin rash on neck
B. Joint Pain
C. Plateful Variation
D. Chancre

Answer

Correct Answer: B. Joint Pain

Detail about MCQs

However, it’s important to note that gonorrhea can cause a range of symptoms, and joint pain is just one of them. Other common symptoms in males can include a burning sensation during urination, discharge from the penis, and painful or swollen testicles. The specific symptoms can vary from person to person, and some individuals may be asymptomatic. It’s essential to seek medical attention if you suspect you have gonorrhea or are experiencing any unusual symptoms.

The activities like sleeping, walking and dreaming are controlled by which part of brain?

A. Pons
B. Cerebellum
C. Hippocampus
D. None of these

Answer

Correct Answer: D. None of these

Detail about MCQs

The activities like sleeping, walking, and dreaming are controlled by different parts of the brain. Specifically:
• Sleeping is regulated by various areas of the brain, including the hypothalamus and brainstem.
• Walking and coordination are primarily controlled by the cerebellum.
• Dreaming involves complex neural activity that is not localized to a single brain region but involves various areas of the brain, including the cerebral cortex.So, the correct answer is D. None of these, as no single part of the brain exclusively controls all of these activities. They are the result of coordinated activity across multiple brain regions.

The size of synaptic cleft (the gap separating nerve cells) in electrical synapse is?

A. 0.2 nm
B. 2nm
C. 20nm
D. 200nm

Answer

Correct Answer: B. 2nm

Detail about MCQs

Electrical synapses are gap junctions. When present between neurons, they are very different from chemical synapses where the separateness of the cells is not in question. They allow the direct spread of current from one cell to another, without delay or need for receptor and decoding systems. But the individuality of the coupled cells is partly lost, and hence their utility is diminished for large nervous systems with labeled lines like those of mammals. Electrical synapses are common in invertebrate and nonmammalian nervous systems but infrequent in mammals except between neuroglial cells, where they offer the chief mode of communication.

Neglecting the effect of air resistance how long a stones takes to dropped off a 125m high building stand’s on the ground, take g = 10m/s2?

A. 3 Sec
B. 4 Sec
C. 18 Sec
D. 5 Sec

Answer

Correct Answer: D. 5 Sec

Detail about MCQs

When neglecting the effect of air resistance, you can use the following kinematic equation to calculate the time it takes for a stone to fall from a certain height:
Distance=12×Acceleration×Time2Distance=21×Acceleration×Time2
In this case, the distance is 125 meters (height of the building), and the acceleration due to gravity (g) is given as 10 m/s^2. We need to find the time (t). Rearrange the equation to solve for time:
125 m=12×10 m/s2×Time2125m=21×10m/s2×Time2
Now, solve for Time:
Time2=2×125 m10 m/s2=25 s2Time2=10m/s22×125m=25s2
Taking the square root of both sides:
Time=25 s2=5 sTime=25s2=5s

Doubling the initial velocity of a projectile while keeping all other parameters the same the height reached by the projectile increases by?

A. Two Times
B. Three Times
C. Four Times
D. Remains the same

Answer

Correct Answer: C. Four Times

Detail about MCQs

The height reached by a projectile is determined by its initial velocity and the acceleration due to gravity. When you double the initial velocity of a projectile while keeping all other parameters the same, the height reached by the projectile will increase by a factor of four (4x).
This is because the height reached by a projectile is directly proportional to the square of its initial velocity. Mathematically:
Height ∝ (Initial Velocity)^2
When you double the initial velocity, it becomes 2 times the original velocity, and its square is 4 times the original value.

A body is moving with momentum of 100kg m/s. what is the magnitude of force required to stop body in 25 sec?

A. 4 N
B. 25 N
C. 100 N
D. 1500 N

Answer

Correct Answer: A. 4 N

Detail about MCQs

To calculate the magnitude of force required to stop a body with a certain momentum, you can use the formula for force:
Force=Change in MomentumTimeForce=TimeChange in Momentum
In this case, the initial momentum of the body is 100 kg m/s, and you want to stop it in 25 seconds, so the change in momentum is equal to the initial momentum because you want to bring it to rest:
Change in Momentum = Initial Momentum = 100 kg m/s
Time = 25 seconds
Now, plug these values into the formula:
Force=100 kg m/s25 s=4 NForce=25s100kg m/s=4N
So, the magnitude of force required to stop the body in 25 seconds is 4 N. Therefore, the correct answer is A. 4 N.

In conversion of acid halides to ester, pyridine is used to?

A. Stabilize Acid Halides
B. Consume HCl formed in the reaction
C. Dehydrate Alcohol
D. None of these

Answer

Correct Answer: B. Consume HCl formed in the reaction

Detail about MCQs

In the conversion of acid halides to esters, pyridine is often used to: Consume HCl formed in the reaction Pyridine is a base and can neutralize the hydrochloric acid (HCl) that is generated as a byproduct in the reaction between acid halides and alcohols to form esters. This helps shift the equilibrium of the reaction toward the formation of the ester by removing the acidic byproduct.

1 2 3 … 5