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.
Hydrocarbons with only CC single bonds are known as saturated hydrocarbons. If a hydrocarbon contains double and/or triple bonds, it is known as unsaturated. The molecule ethylene (C H) contains a carbon double bond and is officially referred to as ethene, although the name ``ethylene'' is more commonly used.