Science GK Practice Question and Answer

Q:

By which device is the purity of milk measured?

1824 0

  • 1
    manometer
    Correct
    Wrong
  • 2
    Hydrometer
    Correct
    Wrong
  • 3
    Lactometer
    Correct
    Wrong
  • 4
    Fadometer
    Correct
    Wrong
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Answer : 3. "Lactometer"

Q:

When sunlight passes through a prism, which of the following colors has the highest refraction?

1824 0

  • 1
    Blue
    Correct
    Wrong
  • 2
    Red
    Correct
    Wrong
  • 3
    Orange
    Correct
    Wrong
  • 4
    Green
    Correct
    Wrong
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Answer : 1. "Blue"

Q:

What chemical substance is present in bones and teeth, what is it called?

1820 0

  • 1
    calcium chloride
    Correct
    Wrong
  • 2
    calcium borate
    Correct
    Wrong
  • 3
    calcium phosphate
    Correct
    Wrong
  • 4
    calcium sulfate
    Correct
    Wrong
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Answer : 3. "calcium phosphate"

Q:

Why are white dresses worn in summer?

1819 0

  • 1
    Bad absorbers of heat are
    Correct
    Wrong
  • 2
    are cheap
    Correct
    Wrong
  • 3
    are attractive
    Correct
    Wrong
  • 4
    None of these
    Correct
    Wrong
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Answer : 1. "Bad absorbers of heat are"

Q:

Why is sodium stored in kerosene?

1782 0

  • 1
    To maintain in its original form
    Correct
    Wrong
  • 2
    It gets oxidised in air
    Correct
    Wrong
  • 3
    evaporation starts in the air
    Correct
    Wrong
  • 4
    it starts burning in air
    Correct
    Wrong
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Answer : 2. "It gets oxidised in air"

Q:

Polythene is industrially produced by polymerisation of

1769 0

  • 1
    Methane
    Correct
    Wrong
  • 2
    Acetylene
    Correct
    Wrong
  • 3
    Ethylene
    Correct
    Wrong
  • 4
    Styrene
    Correct
    Wrong
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Answer : 3. "Ethylene"

Q:

Which of the following is not an area of coral reef?

1729 0

  • 1
    Gulf of Mannar
    Correct
    Wrong
  • 2
    Gulf of Cambay
    Correct
    Wrong
  • 3
    Lakshadweep
    Correct
    Wrong
  • 4
    Andaman and Nicobar Islands
    Correct
    Wrong
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Answer : 2. "Gulf of Cambay"

Q:

What is Marble?

1721 0

  • 1
    Shale
    Correct
    Wrong
  • 2
    Neiss
    Correct
    Wrong
  • 3
    Lime Stone
    Correct
    Wrong
  • 4
    Sand Stone
    Correct
    Wrong
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Answer : 3. "Lime Stone"

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