General Science MCQ Questions Answers For Competitive Exams PDF Free Download

General Science MCQ Questions Answers For Competitive Exams PDF Free Download. If you have read the title carefully then i must say that you feel so lucky that you are in our site. There are so many General Science MCQ questions Answers here for all of you guys. For all those aspirants who are preparing for some competitive exam and finding for some perfect study material for exams. Now, you can study on web and that is too, free of cost.

Aspirants preparing for competitive exams can also download the pdf of these General science MCQ questions. Have a good read. for more general knowledge questions and answer you should stay with us.

General Science MCQ Questions Answers

  1. Brass gets discoloured in air because of the presence of which of the following gases in air?
    Oxygen
    Hydrogen sulphide
    Carbon dioxide
    Nitrogen
  2. Which of the following metals forms an amalgam with other metals?
    Tin
    Lead
    Lead
    Zinc
  3. Chlorophyll is a naturally occurring chelate compound in which central metal is
    copper
    magnesium
    iron
    Calcium
  4. Which of the following is used as a lubricant?
    Graphite
    Silica
    Iron Oxide
    Diamond
  5. Quartz crystals normally used in quartz clocks etc. is chemically
    a mixture of germanium oxide and silicon dioxide
    silicon dioxide
    germanium oxide
    sodium silicate
  6. The gas usually filled in the electric bulb is
    nitrogen
    hydrogen
    carbon dioxide
    oxygen
  7. The variety of coal in which the deposit contains recognisable traces of the original plant material is
    bitumen
    anthracite
    peat
    lignite
  8. The inert gas which is substituted for nitrogen in the air used by deep sea divers for breathing, is
    Helium
    Xenon
    Krypton
    Argon
  9. Which of the following is used as a lubricant?
    Graphite
    Silica
    Iron Oxide
    Diamond
  10. The hardest substance available on earth is
    Diamond
    Gold
    Iron
    Platinum
  11. The chemical (ethyl mercaptan) added to the otherwise odourless LPG cooking gas for imparting a detectable smell to the gas is a compound of
    bromine
    fluorine
    chlorine
    sulphur
  12. The property of a substance to absorb moisture from the air on exposure is called
    osmosis
    deliquescence
    efflorescence
    desiccation
  13. Biodiversity forms the basis for human existence in the following ways
    Prevention of soil erosion
    Recycling of waste
    Pollination of crops
    All of them
  14. In which of the following activities silicon carbide is used?
    cutting very hard substances
    Making casts for statues
    Making cement and glass
    Disinfecting water of ponds
  15. Among the various allotropes of carbon,
    coke is the hardest, graphite is the softest
    diamond is the hardest, coke is the softest
    diamond is the hardest, graphite is the softest
    diamond is the hardest, lamp black is the softest
  16. Widespread resistance of malarial parasite to drugs like chloroquine has prompted attempts to develop a malarial vaccine to combat malaria. Why is it difficult to develop an effective malaria vaccine?
    Malaria is caused by several species of Plasmodium.
    Man does not develop immunity to malaria during natural infection
    Vaccines can be developed only against bacteria.
    Man is only an intermediate host and not the definitive host
  17. Carbon, diamond and graphite are together called
    allotropes
    isomorphs
    isomers
    isotopes
  18. A genetically engineered form of brinjal, known as the Bt-brinjal, has been developed. The objective of this is
    To make it pest-resistant
    To improve its taste and nutritive qualities
    To make it drought-resistant
  19. Soda water contains
    carbonic acid
    sulphuric acid
    carbon dioxide
    nitrous acid
  20. The most important ore of aluminium is
    bauxite
    calamine
    galena
    calcite
  21. Liquefied Petroleum gas (LPG) consists of mainly
    Methane, Ethane and Hexane
    Ethane, Hexane and Nonane
    Methane, Butane and Propane
    Methane, Hexane and Nonane
  22. According to Dalton’s atomic theory the smallest particle which can exist independently is
    An atom
    A molecule
    A cation
    An anion
  23. Lightening cause rainfall because
    It cause combination of oxygen and nitrogen
    Some of the gas molecules become bigger
    It activate H2O molecule
    Photo-electricity reaction starts
  24. Polythene is industrially prepared by the polymerization of
    methane
    styrene
    acetylene
    ethylene
  25. Nitrification means
    Liquefaction of nitrogen
    Convert the atmospheric nitrogen to effective nitrogen compound
    Production of nitrogen from air
    Conversion of nitrogen to nitric acid.

I hope, the General Science questions would prove to be helpful for you.

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