The hydrocarbon 2-methylbutane is an isomer of:

43 The property of self- combination of the same element to form long chains is known as: 44 A cyclic hydrocarbon having carbon-carbon single bonds as well as carbon-carbon double bonds in its molecule is: 46 An unsaturated hydrocarbon having a triple covalent bond has 50 hydrogen atoms in its molecule will be: 47 An alkyne has seventy-five carbon atoms in its molecule. The number of hydrogen atoms in its molecule will be: