A diamond-toothed saw is usually used for cutting:

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: 49 The organic compound prepared by Wohler from an inorganic compound called ammonium cyanate was: 50 One of the following is not an allotrope of carbon. This is: