Basic Science Practice Question and Answer

Q:

When a man enters a dark room with light, he sees nothing for some time. Later he begins to appear, because?

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  • 1
    The iris of his eye shrinks
    Correct
    Wrong
  • 2
    The iris of his eye spreads
    Correct
    Wrong
  • 3
    The distance between the lens and retina of his eye increases
    Correct
    Wrong
  • 4
    The length of his eye lens increases
    Correct
    Wrong
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Answer : 1. "The iris of his eye shrinks"

Q:

Which of the following is not easily oxidized at high temperature?

849 0

  • 1
    Insulator
    Correct
    Wrong
  • 2
    Alloy
    Correct
    Wrong
  • 3
    Semi-conductor
    Correct
    Wrong
  • 4
    conductor
    Correct
    Wrong
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Answer : 2. "Alloy"

Q:

Leaving of the following in ponds and wells helps in controlling mosquitoes?

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  • 1
    crab
    Correct
    Wrong
  • 2
    Dogfish
    Correct
    Wrong
  • 3
    Gambusia fish
    Correct
    Wrong
  • 4
    snail
    Correct
    Wrong
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Answer : 3. "Gambusia fish"

Q:

Which gas is used in the food packaging industry to prevent chips from getting oxidized?

848 0

  • 1
    Nitrogen
    Correct
    Wrong
  • 2
    Hydrogen
    Correct
    Wrong
  • 3
    Helium
    Correct
    Wrong
  • 4
    Carbon
    Correct
    Wrong
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Answer : 1. "Nitrogen"

Q:

Which one of the following is an alloy?

842 1

  • 1
    Zinc
    Correct
    Wrong
  • 2
    Steel
    Correct
    Wrong
  • 3
    lead
    Correct
    Wrong
  • 4
    aluminum
    Correct
    Wrong
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Answer : 2. "Steel"

Q:

Who invented television?

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  • 1
    J.R. L. Baird
    Correct
    Wrong
  • 2
    Macmillan
    Correct
    Wrong
  • 3
    James Watt
    Correct
    Wrong
  • 4
    None of these
    Correct
    Wrong
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Answer : 1. "J.R. L. Baird"

Q:

What is Fathom?

825 1

  • 1
    is a fish
    Correct
    Wrong
  • 2
    Name of a plant is
    Correct
    Wrong
  • 3
    A vessel is called
    Correct
    Wrong
  • 4
    is a measure
    Correct
    Wrong
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Answer : 4. "is a measure"

Q:

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

824 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"

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