CSS MCQs β€” General Science Abbreviations

  • LPG β€” Liquefied Petroleum Gas (CSS 1996 & 2002, Everyday Science Paper)
    • It is extracted from crude oil and natural gas. LPG is composed hydrocarbons containing three or four carbon atoms. The normal components of LPG thus, are propane (C3H8) and butane (C4H10). Small concentrations of other hydrocarbons may also be present.
  • TNT β€” Trinitrotoluene (CSS 1996, Everyday Science Paper)
    • Trinitrotoluene, more commonly known as TNT, or more specifically 2,4,6-trinitrotoluene, is a chemical compound with the formula C₆Hβ‚‚(NOβ‚‚)₃CH₃. TNT is occasionally used as a reagent in chemical synthesis, but it is best known as an explosive material with convenient handling properties.
  • RNA β€” Ribonucleic Acid (CSS 1996, Everyday Science Paper)
  • CNG β€” Compressed Natural Gas (CSS 1996, Everyday Science Paper)
    • CNG is odourless, tasteless and non-toxic, and is made up of 93.05% methane, nitrogen, carbon dioxide, propane and traces of ethane. It is an environmentally clean alternative fuel, as its combustion process emits a lower percentage of greenhouse gases when compared to other fuels.
  • ATP β€” Adenosine tri Phosphate (CSS 1996, Everyday Science Paper)
  • RBC β€” Red Blood Cells (CSS 1996, Everyday Science Paper)
  • ECG β€” Electro Cardio Gram (CSS 1996 & 2003, Everyday Science Paper)
  • DNA β€” Deoxyribonucleic Acid (CSS 2002, Everyday Science Paper)
    • It is a molecule composed of two polynucleotide chains that coil around each other to form a double helix carrying genetic instructions for the development, functioning, growth and reproduction of all known organisms and many viruses. DNA and ribonucleic acid are nucleic acids.
  • WWW β€” World Wide Web (CSS 2002, Everyday Science Paper)
    • The internet is a huge network of computers all connected together. The world wide web (β€˜www’ or β€˜web’ for short) is a collection of webpages found on this network of computers. Your web browser uses the internet to access the web.

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