Chapter 7 - How to Conduct Pretesting. The systematic checking or pretesting of a questionnaire is central to planning a good survey. As mentioned earlier in this series, the survey sponsors should play a major role in developing the data-collection instruments being proposed-including any testing being done.
Question and answer. The simplest unsaturated hydrocarbon is methane, a one-carbon molecule. Please select the best answer from the choices provided T F. The simplest unsaturated hydrocarbon is methane, a one-carbon molecule.This is false. mixture is different from a compound because each substance in a mixture a. retains its own properties. c. forms an ion. b. changes its electric charge. d. changes from a solid to a liquid.
Unsaturated hydrocarbons are compounds composed of carbon and hydrogen atoms, with one or more carbon-carbon double or triple bond in their chemical structure. Unsaturated hydrocarbons are commonly used in many industrial processes for the production of pesticides, fuel, paints, lacquers and more.elow are examples of the unsaturated hydrocarbons. On the left is the chemical structure of acetylene, which contains a triple bond, and on the right is the chemical structure of styrene, which contains several double bonds.