Science & Technology

Nowadays, there is a separate section for General knowledge in most of the competitive exams and interviews, which plays a major role in final merit listing of Candidates.Science and Technology is very useful for those aspirants who are preparing for competitive exams such as Written test of Bank Exams, CAT Exams, Railway Exams, SSC, UPSC,Banking,Insurance, Defence and many more.

• Q57.What is formed when ethanol reacts with ethanoic acid on warming in the presence of a few drops of concentrated sulphuric acid?

  A) Ester
  B) Ethene
  C) Sodium Ethoxide
  D) Ethane
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• Q58.Which of the following is used as a fuel in cars along with petrol?

  A) Methane
  B) Ethane
  C) Butane
  D) Ethanol
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• Q59.What is the boiling point of ethanol?

  A) 100 degree °C
  B) 50 degree °C
  C) 88 degree °C
  D) 78 degree °C
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• Q60.The reaction in which an unsaturated hydrocarbon combines with another substance to give a single product is called:

  A) Addition reaction
  B) Combustion reaction
  C) Combination reaction
  D) Substitution reaction
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• Q61.The cooking gas (LPG) mainly consists of:

  A) Butane
  B) Ethene
  C) Ethyne
  D) Propene
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• Q62.Which of the following is the chemical property of carbon compounds?

  A) Combustion reactions
  B) Substitution reactions
  C) Addition reactions
  D) All of the above
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• Q63.What type of flame is produced when the oxygen supply is sufficient?

  A) Yellow flame
  B) Blue flame
  C) Orange flame
  D) None of the above
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