• The major Constituent of march gas is :
    Butane
    Methane
    Propane
    Isobutane
  • Which gas is used for cutting and welding of a metal :
    Corbon di oxide
    Neon
    Metane
    Acetylene
  • General formula CnH2n-2 is for the compounds of series
    Alkane
    Alkene
    Alkyne
    None of the above