Basic Science Practice Question and Answer

Q:

The marshy gas which is produced on decomposition of organic matter and is mostly found in coal mines, is the name of that gas?

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  • 1
    ethane
    Correct
    Wrong
  • 2
    Methane
    Correct
    Wrong
  • 3
    carbon dioxide
    Correct
    Wrong
  • 4
    carbon monoxide
    Correct
    Wrong
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Answer : 2. "Methane"

Q:

Which of the following electromagnetic waves has the highest wavelength?

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  • 1
    Ultraviolet rays
    Correct
    Wrong
  • 2
    Sunlight
    Correct
    Wrong
  • 3
    Gamma rays
    Correct
    Wrong
  • 4
    infrared rays
    Correct
    Wrong
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Answer : 4. "infrared rays"

Q:

What causes molybdenum deficiency?

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  • 1
    Whip tail in cauliflower
    Correct
    Wrong
  • 2
    Hot disease in tomato
    Correct
    Wrong
  • 3
    Lemon yellow yellow stain disease
    Correct
    Wrong
  • 4
    All these
    Correct
    Wrong
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Answer : 1. "Whip tail in cauliflower"

Q:

In an electric circuit, Rheostat is often used to change the _____ in the circuit.

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  • 1
    Temperature
    Correct
    Wrong
  • 2
    Resistance
    Correct
    Wrong
  • 3
    Electric current
    Correct
    Wrong
  • 4
    Potential difference
    Correct
    Wrong
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Answer : 2. "Resistance "

Q:

Which element forms the maximum number of compounds with hydrogen?

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  • 1
    Oxygen
    Correct
    Wrong
  • 2
    Silicon
    Correct
    Wrong
  • 3
    Carbon
    Correct
    Wrong
  • 4
    Nitrogen
    Correct
    Wrong
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Answer : 3. "Carbon"

Q:

Goiter / excessive growth of thyroid gland causes by the deficiency of:

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  • 1
    Calcium
    Correct
    Wrong
  • 2
    potassium
    Correct
    Wrong
  • 3
    Iodine
    Correct
    Wrong
  • 4
    Iron
    Correct
    Wrong
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Answer : 3. " Iodine "

Q:

Which of the following gas is not present in the atmosphere?

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  • 1
    Nitrogen
    Correct
    Wrong
  • 2
    Helium
    Correct
    Wrong
  • 3
    Chlorine
    Correct
    Wrong
  • 4
    Krypton
    Correct
    Wrong
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Answer : 3. "Chlorine"

Q:

Which gas is used for unnatural ripening of fruits?

1049 0

  • 1
    Ethylene
    Correct
    Wrong
  • 2
    ethane
    Correct
    Wrong
  • 3
    carbon dioxide
    Correct
    Wrong
  • 4
    Acetylene
    Correct
    Wrong
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Answer : 1. "Ethylene"

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