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1 Biology Mcqs

Eugenics is the study of ?

  • Altering human beings by changing their genetic components
  • People of European region
  • Different races of mankind
  • None of these
0 Comments
Correct Answer: A. Altering human beings by changing their genetic components

Explanation:

Eugenics is a field of study focused on improving or altering the genetic ... Read More Details

2 Chemistry MCQs

Diamond is a very expensive ornament. It is composed of a single element ?

  • Carbon
  • Gold
  • Silver
  • None of these
0 Comments
Correct Answer: A. Carbon

Explanation:

A diamond is one of the most precious natural substances found on Earth, ... Read More Details

3 Physics MCQs

Television signals are converted into light signals by ?

  • Optical fiber
  • Transistor
  • Decoder
  • Photo diode
0 Comments
Correct Answer: D. Photo diode

Explanation:

Television transmission and display technology rely on converting electrical signals into forms that ... Read More Details

4 Physics MCQs

The number of spark plugs needed in a diesel engine is ?

  • 2
  • 3
  • 0
  • 4
0 Comments
Correct Answer: C. 0

Explanation:

Engines require a method to ignite the fuel-air mixture to produce power. In ... Read More Details

5 Physics MCQs

The half-life of a radioactive element is 8 days. How long does it take to reduce it from 10 mg to 5 mg?

  • 4 days
  • 6 days
  • 8 days
  • None of these
0 Comments
Correct Answer: C. 8 days

Explanation:

Radioactivity is the process by which unstable atomic nuclei lose energy by emitting ... Read More Details

6 Everyday Science MCQs

The term ‘Blue Shift’ is used to indicate?

  • Doppler effect in which an object appears bluer when it is moving towards the observer or observer is moving towards the object.
  • Turning a star from white to blue
  • In future sun would become blue
  • None of these
0 Comments
Correct Answer: A. Doppler effect in which an object appears bluer when it is moving towards the observer or observer is moving towards the object.

Explanation:

In astronomy, the term Blue Shift refers to a phenomenon related to the ... Read More Details

7 Everyday Science MCQs

Monsoon is caused by ?

  • Seasonal reversal of winds
  • Revolution of earth
  • Movement of clouds
  • Rise in temperature
0 Comments
Correct Answer: A. Seasonal reversal of winds

Explanation:

The monsoon is a natural weather phenomenon that brings heavy seasonal rainfall to ... Read More Details

8 Physics MCQs

Fuel used in a Fast Breeder Reactor is ?

  • Uranium Oxide
  • Uranium Plutonium Carbide
  • Uranium Thorium Oxide
  • None of these
0 Comments
Correct Answer: B. Uranium Plutonium Carbide

Explanation:

A Fast Breeder Reactor (FBR) is a special type of nuclear reactor designed ... Read More Details

9 Everyday Science MCQs

Which of the following atmospheric layers help in radio communication?

  • Exosphere
  • Ionosphere
  • Troposphere
  • Stratosphere
0 Comments
Correct Answer: B. Ionosphere

Explanation:

Earth’s atmosphere is divided into several layers, including the troposphere, stratosphere, mesosphere, thermosphere, ... Read More Details

10 Physics MCQs

A moderator is used in nuclear reactor in order to?

  • Accelerate the neutrons
  • Slow down the speed of the neutrons
  • Increase the number of electrons
  • Decrease the number of electrons
0 Comments
Correct Answer: B. Slow down the speed of the neutrons

Explanation:

In a nuclear reactor, controlled nuclear fission takes place to release energy. Fission ... Read More Details

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