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GK Questions: General Science(Chemistry) – Set 8

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Sheerin
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Hello Aspirants. Welcome to Online General Knowledge section in Affairs cloud, which is important for all the competitive exams. We have created Some questions related to General Science(Chemistry) !!!

  1. ……………………….. is an example of emulsion
    1.Acid
    2.Water
    3.Curd
    4.Milk
    5.None of these
    Answer –4.Milk
    Explanation :
    Emulsion is a fine dispersion of minute droplets of one liquid in another in which it is not soluble or miscible.

  2. The colour of the stars reflect the ……………. of the stars.
    1.distance
    2.age
    3.intensity
    4.power
    5.None of these
    Answer – 2.age
    Explanation :
    The color of a star indicates its temperature and age. Stars are classified by their spectral type

  3. ………………….. is called as stranger gas
    1.Nitrogen
    2.Oxygen
    3.Xenon
    4.Helium
    5.None of these
    Answer – 3.Xenon
    Explanation :
    Xenon is called the ‘stranger’ gas. This gas very un-reactive and heavier than air, that was why named strange. Atomic number of Xe is 54

  4. Natural rubber consists of polymers of the organic compound ………………………
    1.Ethylene
    2.Polyisoprene
    3.Propylene
    4.Isoprene
    5.None of these
    Answer – 4.Isoprene
    Explanation :
    Natural rubber, also called India rubber or caoutchouc, as initially produced, consists of polymers of the organic compound isoprene, with minor impurities of other organic compounds plus water. Malaysia is a leading producer of rubber.

  5. Dry air contains …………………….nitrogen
    1.75.80%
    2.78.09%
    3.80%
    4.65.05%
    5.None of these
    Answer – 2.78.09%
    Explanation :
    By volume, dry air contains 78.09% nitrogen, 20.95% oxygen,0.93% argon, 0.039% carbon dioxide, and small amounts of other gases.

  6. …………………….. is called as liquid gold
    1.Petroleum
    2.Diesel
    3.Kerosene
    4.Water
    5.None Of These
    Answer – 1.Petroleum
    Explanation :
    petroleum is called liquid gold because of its high price and value and its economic

  7. Pencil lead contains the element………………….
    1.Hydrogen
    2.Lead
    3.Carbon
    4.Nitrogen
    5.None of these
    Answer – 3.Carbon
    Explanation :
    Pencil lead contains the element carbon in the form (allotrope) of graphite. The powdered graphite is mixed with a clay binder.

  8. Which of the following is true about methane ?
    1.colour gas
    2.colourless gas
    3.inflammable gas
    4.Both 1 and 3
    5.Both 2 and 3
    Answer – 5.Both 2 and 3
    Explanation :
    Methane: A colorless, inflammable gas which exists in the atmosphere in concentrations of 1,500 parts per billion by volume of dry air. It is a “greenhouse gas” in that it retards the escape of the Earth’s heat into space.

  9. The colour of ruby is red .It is caused mainly by the presence of the element………………………
    1.Neon
    2.Chromium
    3.Helium
    4.Chlorine
    5.None of these
    Answer – 2.Chromium
    Explanation :
    A ruby is a pink to blood-red colored gemstone, a variety of the mineral  corundum (aluminium oxide).  The red color is caused mainly by the presence of the element chromium

  10. Which is also known as Marsh gas ?
    1.Ethane
    2.Acetylene
    3.Ammonia
    4.Methane
    5.None of these
    Answer – 4.Methane
    Explanation :
    Methane is called as marsh gas,especially as generated by decaying matter in marshes.





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