Maharashtra State PSC Model Paper 2

The correct answer is 1 and 3 only.

• Syngas
  • It is an abbreviation for synthesis gas, which is a mixture comprising carbon monoxide, carbon dioxide, and hydrogen.
    • Hence statement 2 is not correct.
  • The syngas is produced by gasification of a carbon-containing fuel to a gaseous product that has some heating value.
    • Some of the examples of syngas production include gasification of coal emissions, waste emissions to energy gasification, and steam reforming of coke.
  • The by-products of coal gasification include coke, coal tar, sulfur, ammonia and fly ash, all having their own potential uses.
    • CO₂ and ammonia are further reacted to produce urea. 
  • Syngas can also be used in a variety of other applications such as in the production of electricity, fuel for IC engines, making plastics, cement etc.
    • It can also be an intermediate in the industrial synthesis of ammonia and fertilizer.
    • Hence statement 3 is correct.
  • The move towards the reduction of greenhouse gas emissions with the use of syngas as a fuel for the production of electricity is predicted to grow sharply in the near future as a result of:
    • global warming and ocean surface acidification, which imply the need to control and
    • reduce greenhouse gas emission,
    • the low estimated reserves of oil, and
    • rising cost as well as demand for natural gas and the need to reduce the dependence on
    • fossil fuel imports from unstable areas.
    • Hence statement 1 is correct.