Practice Question and Answer

Q:

An object is placed in front of a concave mirror at a point between its focus point and the centre of curvature. The image to be created will be:

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  • 1
    virtual and straight
    Correct
    Wrong
  • 2
    Virtual and opposite
    Correct
    Wrong
  • 3
    Real and opposite
    Correct
    Wrong
  • 4
    Real and straight
    Correct
    Wrong
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Answer : 3. "Real and opposite"

Q:

What is the scientific name of Rice?

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  • 1
    Triticum aestivum
    Correct
    Wrong
  • 2
    Oryza sativa
    Correct
    Wrong
  • 3
    Brassica capestris
    Correct
    Wrong
  • 4
    Pisum sativum
    Correct
    Wrong
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Answer : 2. "Oryza sativa"

Q:

Soda lime is a mixture of

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  • 1
    NaOH + CaCO3
    Correct
    Wrong
  • 2
    NaOH + CaO
    Correct
    Wrong
  • 3
    NaOH + HOH
    Correct
    Wrong
  • 4
    None of these
    Correct
    Wrong
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Answer : 2. "NaOH + CaO"

Q:

In those alcohol tragedies that result in blindness etc., the harm factor is-

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  • 1
    Methyl alcohol
    Correct
    Wrong
  • 2
    Ethyl alcohol
    Correct
    Wrong
  • 3
    acetylene
    Correct
    Wrong
  • 4
    Ethyl alcohol
    Correct
    Wrong
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Answer : 1. "Methyl alcohol "

Q:

What is the most effective conductor of electricity?

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  • 1
    Gold
    Correct
    Wrong
  • 2
    Iron
    Correct
    Wrong
  • 3
    Silver
    Correct
    Wrong
  • 4
    Copper
    Correct
    Wrong
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Answer : 3. "Silver "

Q:

The atomic mass of an element has the maximum number of electrons in its second orbit—

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  • 1
    2
    Correct
    Wrong
  • 2
    8
    Correct
    Wrong
  • 3
    10
    Correct
    Wrong
  • 4
    16
    Correct
    Wrong
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Answer : 2. "8"

Q:

The product of mass and velocity of an object is called-

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  • 1
    momentum
    Correct
    Wrong
  • 2
    acceleration
    Correct
    Wrong
  • 3
    volume
    Correct
    Wrong
  • 4
    density
    Correct
    Wrong
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Answer : 1. "momentum"

Q:

Which of the following is not necessary for photosynthesis?

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  • 1
    Oxygen
    Correct
    Wrong
  • 2
    Chlorophyll
    Correct
    Wrong
  • 3
    Sunlight
    Correct
    Wrong
  • 4
    Carbon dioxide
    Correct
    Wrong
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Answer : 1. "Oxygen "

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