Science GK Practice Question and Answer

Q:

From which source is the list of countries emitting carbon dioxide based on carbon dioxide emissions?

1865 0

  • 1
    Burning of fossil fuels
    Correct
    Wrong
  • 2
    Cement Industry
    Correct
    Wrong
  • 3
    Both of the above
    Correct
    Wrong
  • 4
    None of these
    Correct
    Wrong
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Answer : 3. "Both of the above"
Explanation :

This is a list of sovereign states and territories by carbon dioxide emissions due to certain forms of human activity, based on the EDGAR database created by European Commission and Netherlands Environmental Assessment Agency.

Q: Washing soda is ? 1863 0

  • 1
    sodium sulphite
    Correct
    Wrong
  • 2
    sodium bicarbonate
    Correct
    Wrong
  • 3
    sodium carbonate
    Correct
    Wrong
  • 4
    sodium biosulphite
    Correct
    Wrong
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Answer : 3. "sodium carbonate"

Q:

Rust on iron?

1843 0

  • 1
    ferric oxide
    Correct
    Wrong
  • 2
    Hydrated ferrous and ferric oxide
    Correct
    Wrong
  • 3
    Alkali ferrous and ferric carbonate
    Correct
    Wrong
  • 4
    Because of all of the above
    Correct
    Wrong
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Answer : 4. "Because of all of the above"

Q:

capacitor is a of small size but high capacity?

1837 1

  • 1
    mica capacitor
    Correct
    Wrong
  • 2
    electrolytic capacitors
    Correct
    Wrong
  • 3
    Sirasic capacitor
    Correct
    Wrong
  • 4
    Paper capacitor
    Correct
    Wrong
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Answer : 1. "mica capacitor"

Q:

Which gas is used to purify pond water in cities?

1827 0

  • 1
    Sulfur dioxide
    Correct
    Wrong
  • 2
    Chlorine
    Correct
    Wrong
  • 3
    Nitrogen
    Correct
    Wrong
  • 4
    Ammonia
    Correct
    Wrong
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Answer : 2. "Chlorine"

Q:

Thermal conductivity of soil when moisture content in the soil increases?

1815 0

  • 1
    will decrease
    Correct
    Wrong
  • 2
    will increase
    Correct
    Wrong
  • 3
    No change
    Correct
    Wrong
  • 4
    None of these
    Correct
    Wrong
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Answer : 2. "will increase"

Q:

Electricity is generated when the drivers rotate between the magnetic fields?

1803 0

  • 1
    Moving
    Correct
    Wrong
  • 2
    stable
    Correct
    Wrong
  • 3
    Both static and dynamic
    Correct
    Wrong
  • 4
    None of these
    Correct
    Wrong
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Answer : 1. "Moving"
Explanation :

In a generator, a rotating magnetic field is used to produce electrical energy. When a conductor, such as a wire, moves through a magnetic field, a voltage is induced across the conductor. This is known as electromagnetic induction, and it is the fundamental principle behind how generators work.

Q:

Potato canker has black canker and black pan / colloid factor?

1794 0

  • 1
    two fungi
    Correct
    Wrong
  • 2
    A fungus and a bacterium
    Correct
    Wrong
  • 3
    a fungus
    Correct
    Wrong
  • 4
    A fungus and a virus
    Correct
    Wrong
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Answer : 3. "a fungus"

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