Basic Science Practice Question and Answer

Q:

Gun powder is a mixture of?

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  • 1
    soil and TNT
    Correct
    Wrong
  • 2
    sulphur, clay and charcoal
    Correct
    Wrong
  • 3
    saltpeter, sulfur and charcoal
    Correct
    Wrong
  • 4
    TNT and charcoal
    Correct
    Wrong
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Answer : 3. "saltpeter, sulfur and charcoal"

Q:

The function of dynamo is?

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  • 1
    Converting electrical energy into mechanical energy
    Correct
    Wrong
  • 2
    Converting mechanical energy into electrical energy
    Correct
    Wrong
  • 3
    Converting electrical energy into heat
    Correct
    Wrong
  • 4
    None of these
    Correct
    Wrong
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Answer : 2. "Converting mechanical energy into electrical energy"

Q:

The pH value of milk is

838 1

  • 1
    2.4
    Correct
    Wrong
  • 2
    6.6
    Correct
    Wrong
  • 3
    3.8
    Correct
    Wrong
  • 4
    8.0
    Correct
    Wrong
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Answer : 2. "6.6"

Q:

Ozone layer is found in

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  • 1
    Thermosphere
    Correct
    Wrong
  • 2
    Stratosphere
    Correct
    Wrong
  • 3
    Troposhere
    Correct
    Wrong
  • 4
    Mesophere
    Correct
    Wrong
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Answer : 2. "Stratosphere"

Q:

The number of ossicles in the ear of mammals is

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  • 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.

Q:

Litmus is isolated from-

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  • 1
    Lichen
    Correct
    Wrong
  • 2
    Algae
    Correct
    Wrong
  • 3
    Fungus
    Correct
    Wrong
  • 4
    Bacteria
    Correct
    Wrong
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Answer : 1. "Lichen "

Q:

Vinegar is acidic in nature due to

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  • 1
    Citric acid
    Correct
    Wrong
  • 2
    sulfuric acid
    Correct
    Wrong
  • 3
    hydrochloric acid
    Correct
    Wrong
  • 4
    acetic acid
    Correct
    Wrong
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Answer : 4. "acetic acid"

Q:

Which metal is the best conductor of heat?

826 0

  • 1
    Gold
    Correct
    Wrong
  • 2
    Aluminum
    Correct
    Wrong
  • 3
    Silver
    Correct
    Wrong
  • 4
    Brass
    Correct
    Wrong
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Answer : 3. "Silver"

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