Science GK Practice Question and Answer

Q: Which one of the following is the softest? 2518 0

  • 1
    sodium
    Correct
    Wrong
  • 2
    iron
    Correct
    Wrong
  • 3
    aluminium
    Correct
    Wrong
  • 4
    lithium
    Correct
    Wrong
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Answer : 1. "sodium"

Q: Homo nuclear molecules contain ? 2514 0

  • 1
    polar bond
    Correct
    Wrong
  • 2
    covalent bond
    Correct
    Wrong
  • 3
    ionic bond
    Correct
    Wrong
  • 4
    coordinate bond
    Correct
    Wrong
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Answer : 2. "covalent bond"

Q: Which gas is used in fire extinguishers ? 2465 1

  • 1
    Carbon dioxide
    Correct
    Wrong
  • 2
    Nitrogen oxide
    Correct
    Wrong
  • 3
    Carbon monoxide
    Correct
    Wrong
  • 4
    Sulpher dioxide
    Correct
    Wrong
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Answer : 1. "Carbon dioxide"

Q: Which metal is heaviest ? 2462 0

  • 1
    osmium
    Correct
    Wrong
  • 2
    mercury
    Correct
    Wrong
  • 3
    iron
    Correct
    Wrong
  • 4
    nickle
    Correct
    Wrong
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Answer : 1. "osmium"

Q: The term PVC used in the plastic industry stands for 2453 0

  • 1
    polyvinyl choloride
    Correct
    Wrong
  • 2
    polyvinyl carbotate
    Correct
    Wrong
  • 3
    phosphor vanadiu chloride
    Correct
    Wrong
  • 4
    phosphavinyl chloride
    Correct
    Wrong
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Answer : 1. "polyvinyl choloride"

Q:

Beta biodiversity is an example of

2439 0

  • 1
    Run of Kutch
    Correct
    Wrong
  • 2
    Rajasthan
    Correct
    Wrong
  • 3
    India
    Correct
    Wrong
  • 4
    Asia
    Correct
    Wrong
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Answer : 3. "India "
Explanation :

It is the number of species unique to each environment that is used to calculate species diversity between two nearby ecosystems. Considering the above slope example, the species diversity between any two patches and their communities in that particular slope represents beta diversity.

Q: Aspirin is 2433 0

  • 1
    acetyl salicylic acid
    Correct
    Wrong
  • 2
    sodium salicylate
    Correct
    Wrong
  • 3
    methyl salicylate
    Correct
    Wrong
  • 4
    ethyl salicylate
    Correct
    Wrong
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Answer : 1. "acetyl salicylic acid"

Q:

The number of ossicles in the ear of mammals is

2426 0

  • 1
    2
    Correct
    Wrong
  • 2
    3
    Correct
    Wrong
  • 3
    4
    Correct
    Wrong
  • 4
    5
    Correct
    Wrong
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Answer : 2. "3"
Explanation :

The mammalian middle ear contains three ossicles, which move the vibrations of the eardrum into waves in the liquid and membrane of the inward ear. There are three ossicles in every ear : MalleusIncusStapes. As we have a couple of ears, so altogether there are 6 ossicles, or 3 sets of ossicles.

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