Science GK Practice Question and Answer

Q: Air contains maximum amount of 2260 0

  • 1
    oxygen
    Correct
    Wrong
  • 2
    nitrogen
    Correct
    Wrong
  • 3
    hydrogen
    Correct
    Wrong
  • 4
    carbon dioxide
    Correct
    Wrong
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Answer : 2. "nitrogen"

Q:

Which of the following disease reduces the age of laborers working in coal mine and that disease is called Black Lung disease?

2252 0

  • 1
    Clomgolanosis
    Correct
    Wrong
  • 2
    progressive massive fibrosis
    Correct
    Wrong
  • 3
    mesothelioma
    Correct
    Wrong
  • 4
    None of these
    Correct
    Wrong
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Answer : 1. "Clomgolanosis"
Explanation :

Coal workers' pneumoconiosis (CWP), commonly known as "black lung disease," occurs when coal dust is inhaled. Over time, continued exposure to the coal dust causes scarring in the lungs, impairing your ability to breathe. Considered an occupational lung disease, it is most common among coal miners.

Q:

In the nitrogen cycle, soil nitrates are converted into free nitrogen by whom?

2245 0

  • 1
    nitrifying bacteria
    Correct
    Wrong
  • 2
    denitrifying bacteria
    Correct
    Wrong
  • 3
    ammonifying bacteria
    Correct
    Wrong
  • 4
    None of these
    Correct
    Wrong
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Answer : 2. "denitrifying bacteria"

Q: The most electronegative element among the following is 2230 1

  • 1
    sodium
    Correct
    Wrong
  • 2
    bromine
    Correct
    Wrong
  • 3
    fluorine
    Correct
    Wrong
  • 4
    oxygen
    Correct
    Wrong
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Answer : 3. "fluorine"

Q:

Which of the following is not a greenhouse gas?

2218 0

  • 1
    methane
    Correct
    Wrong
  • 2
    nitrous oxide
    Correct
    Wrong
  • 3
    Sulfur Hexa Fluoride
    Correct
    Wrong
  • 4
    carbon monoxide
    Correct
    Wrong
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Answer : 4. "carbon monoxide"

Q:

A high speed vehicle honks, so its pitch?

2197 0

  • 1
    is heard as much
    Correct
    Wrong
  • 2
    more audible
    Correct
    Wrong
  • 3
    hearing impaired
    Correct
    Wrong
  • 4
    First less and then more
    Correct
    Wrong
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Answer : 2. "more audible"

Q: What is a mixture of potassium nitrate powdered charcoal and sulphur called? 2196 0

  • 1
    paint
    Correct
    Wrong
  • 2
    aluminium
    Correct
    Wrong
  • 3
    brass
    Correct
    Wrong
  • 4
    gun powder
    Correct
    Wrong
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Answer : 4. "gun powder"

Q: Rare gases are 2185 0

  • 1
    mono atomic
    Correct
    Wrong
  • 2
    di atomic
    Correct
    Wrong
  • 3
    tri atomic
    Correct
    Wrong
  • 4
    None of above
    Correct
    Wrong
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Answer : 1. "mono atomic"

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