General Science Questions Practice Question and Answer

Q:

A copper disc has a circular hole in the center when the copper disc is heated then the diameter of the hole is-

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  • 1
    will remain the same
    Correct
    Wrong
  • 2
    will decrease
    Correct
    Wrong
  • 3
    will increase
    Correct
    Wrong
  • 4
    will depend on other factors
    Correct
    Wrong
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Answer : 2. "will decrease"
Explanation :

When a copper disc with a circular hole in the center is heated, the diameter of the hole will generally increase. This phenomenon occurs due to the expansion of the copper material as it is heated. When a material is heated, its particles gain energy and move more vigorously, leading to an increase in volume, and consequently, an increase in the diameter of the hole and the entire disc. The exact amount of expansion would depend on factors such as the temperature increase and the material properties of copper.

Q:

The indigenously made Atmospheric Water Generator (AWG) by which Navratna company can make water from the moisture in the atmosphere?

413 0

  • 1
    Gail India Limited
    Correct
    Wrong
  • 2
    Bharat Electronics Limited
    Correct
    Wrong
  • 3
    Bharat Heavy Electronics Limited
    Correct
    Wrong
  • 4
    steel authority of India
    Correct
    Wrong
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Answer : 2. "Bharat Electronics Limited"

Q:

Seed therapy is used to treat what?

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  • 1
    aids
    Correct
    Wrong
  • 2
    tuberculosis
    Correct
    Wrong
  • 3
    cancer
    Correct
    Wrong
  • 4
    asthma
    Correct
    Wrong
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Answer : 3. "cancer"
Explanation :

Radiation seed therapy, especially with Cesium-131, is an innovative tool in the fight against cancer.

Q:

Due to which behavior of the barometer which measures the atmospheric pressure, "thunderstorm is coming" is predicted?

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  • 1
    the barometer reading rises slowly
    Correct
    Wrong
  • 2
    the barometer reading slowly goes down
    Correct
    Wrong
  • 3
    barometer reading rises suddenly
    Correct
    Wrong
  • 4
    barometer reading rises suddenly
    Correct
    Wrong
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Answer : 4. "barometer reading rises suddenly"
Explanation :

A falling barometric pressure, detected by a barometer, signals an approaching thunderstorm. This drop indicates unstable atmospheric conditions, often preceding stormy weather. Meteorologists use barometric readings to predict thunderstorms, as the decrease in pressure signifies the likelihood of imminent weather disturbances and allows for timely weather warnings.


Q:

Which gas is filled in the balloons used to get information about weather related changes?

437 0

  • 1
    hydrogen
    Correct
    Wrong
  • 2
    helium
    Correct
    Wrong
  • 3
    oxygen
    Correct
    Wrong
  • 4
    nitrogen
    Correct
    Wrong
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Answer : 2. "helium"
Explanation :

Helium: It is an inert gas that is lighter than air. It is non-flammable.

Q:

What is the percentage of protein in soybean?

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  • 1
    75%
    Correct
    Wrong
  • 2
    50%
    Correct
    Wrong
  • 3
    64%
    Correct
    Wrong
  • 4
    42%
    Correct
    Wrong
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Answer : 4. "42%"
Explanation :

Soybean seeds contain to 40% of crude protein and about 20% of fat, and soybean meal characterized higher content of crude protein- about 40-49%. Soybean meal standardized on 44 and 49% of protein there is on the feed market

Q:

What are tissues in the body made of?

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  • 1
    carbohydrates
    Correct
    Wrong
  • 2
    fat
    Correct
    Wrong
  • 3
    vitamins
    Correct
    Wrong
  • 4
    protein
    Correct
    Wrong
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Answer : 4. "protein"
Explanation :

Tissues are formed from the assemblage of cells and intercellular materials in various proportions in which one component predominates. In nervous tissue as an example, nerve cells predominate while in connective tissues such as Ligaments and Tendons, intercellular fibrous materials predominate.

Q:

Mitochondria are absent in?

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  • 1
    green algae
    Correct
    Wrong
  • 2
    bacteria
    Correct
    Wrong
  • 3
    fungus
    Correct
    Wrong
  • 4
    yeast
    Correct
    Wrong
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Answer : 2. "bacteria"
Explanation :

Bacteria are prokaryotes. They are single-celled organisms and microscopic. It does not have well defined nucleus and cell organelles. Thus, mitochondria is absent in them.

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