MCQs Preparation

GENOCIDE meaning is:

A. Murder of a king
B. Murder of a father
C. Murder of a group of people
D. Murder of a queen

C. Murder of a group of people

The correct answer is:

C. Murder of a group of people

Genocide refers to the deliberate and systematic destruction of a group of people, typically based on their ethnicity, nationality, religion, or race. It’s a much broader term than murder which refers to the killing of one person.

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Choose the correct sentence.

A. There has been a very little rain this summer
B. You are intelligent, not he
C. You are the intelligent, not him

A. There has been a very little rain this summer

The correct sentence is: There has been very little rain this summer

Here’s why:

  • uses “very little” which is the correct way to express a small amount of something uncountable like rain.
  • compares intelligence between “you” and “he” but uses the wrong structure. It should be “you are more intelligent than he is” or “you are intelligent, he is not.”
  • uses “the intelligent” which implies “the most intelligent” which might not be the intended meaning. It’s better to use “you are intelligent” for a simple comparison.

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Antonym of ATTRACT is:

A. Captivate
B. Fascinate
C. Endear
D. Repel

D. Repel

The antonym of “attract” means something that drives away or discourages.

Out of the options:

  • Captivate, Fascinate, and Endear all mean to attract or hold someone’s interest.
  • Repel means to drive back or away.

Therefore, the antonym of Attract is:

  1. Repel

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Antonym of HURT is:

A. Love
B. Heal
C. Injured
D. Wounding

B. Heal

Here’s why:

  • Hurt refers to experiencing pain or damage.
  • Heal refers to recovering from pain or damage.

The other options:

  • Love – While love can be the opposite of emotional hurt, it’s not the direct opposite in the context of physical pain.
  • Injured – This is a synonym of hurt, not an antonym.
  • Wounding – This is another synonym of hurt, referring specifically to causing a wound.

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The internal energy of a fixed mass of an ideal gas depends on

A. Pressure
B. Temperature
C. Volume
D. None of these

B. Temperature

The internal energy of a fixed mass of an ideal gas depends on:

B. Temperature

This is because in an ideal gas:

  • The molecules are assumed to be point-like with negligible volume.
  • There are no intermolecular forces between the gas molecules.
  • The only contributor to the internal energy is the kinetic energy of the gas molecules.

Since the temperature is directly proportional to the average kinetic energy of the gas molecules, the internal energy of an ideal gas depends solely on temperature.

The other options are not relevant for an ideal gas:

  • A. Pressure: While pressure and temperature are related in ideal gases (through the ideal gas law), pressure itself doesn’t directly determine the internal energy.
  • C. Volume: In an ideal gas, the molecules are assumed to have negligible volume, so the container’s volume doesn’t affect the internal energy as long as the gas molecules have enough space to move freely.

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The charge which is used to produce an electric field is called

A. Electric field
B. Field Charge
C. Electric intensity
D. Test Charge

D. Test Charge

The charge responsible for creating an electric field is called a D. Test Charge (although this terminology is not the most common).

Here’s a breakdown of the terms:

  • Electric Field: This describes the region of influence around a charged object where other charged objects experience a force. It’s not a physical entity itself, but rather a concept to describe the effect of the charge.
  • Field Charge: This term isn’t typically used in standard physics vocabulary.
  • Electric Intensity: This is another term for electric field, but it emphasizes the strength of the field at a specific point.
  • Test Charge: This is a hypothetical charged particle that is used to probe an electric field. By observing the force exerted on the test charge, we can determine the strength and direction of the electric field at that point.

However, it’s more common to simply refer to the charged object itself as the source of the electric field. For example, we might say “the positive charge creates an electric field.”

The charge which is used to produce an electric field is called Read More »

The average velocity gained by the electron in a conductor placed in an electric field is called

A. Variable Velocity
B. Phase Velocity
C. Drift Velocity
D. Instantaneous Velocity

C. Drift Velocity

The average velocity gained by the electron in a conductor placed in an electric field is called:

C. Drift Velocity

Here’s why:

  • Electrons in a conductor constantly move around due to their thermal energy.
  • When an electric field is applied, these electrons experience a force that causes them to accelerate in the direction opposite the electric field.
  • However, they also collide with ions (positively charged atoms) in the conductor, which disrupts their straight-line motion.

Drift velocity refers to the average velocity that electrons acquire due to the applied electric field, considering both the acceleration caused by the field and the collisions with ions. It’s a net effect that represents the overall movement of electrons in the conductor.

The other options are not as accurate in this context:

  • A. Variable Velocity: While the electrons’ instantaneous velocity does vary due to collisions, drift velocity refers to the average of these variations.
  • B. Phase Velocity: Phase velocity describes the propagation speed of a wave, not the average velocity of electrons in a conductor.
  • D. Instantaneous Velocity: This refers to the electron’s velocity at a specific moment, which constantly changes due to collisions. Drift velocity considers the average of these instantaneous velocities.

The average velocity gained by the electron in a conductor placed in an electric field is called Read More »

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