Applicants holding driving licence/learnerâs licence/conductorâs licence desire for noting change of address shall make an application on plain paper along with documents and any one of the following proof of address :
alkali refining. in fat and oil processing: Alkali refining. Many of these can be removed by treating fats at 40Â° to 85Â° C (104Â° to 185Â° F) with an aqueous solution of caustic soda ( sodium hydroxide) or soda ash (sodium carbonate). The refining may be done in a tank (in which case it is called batch or tank refining) or in a continuous system.
New method of oil refining Chemical engineers William Burton and Robert Humphreys of Standard Oil patent a method of oil refining that significantly increases gasoline yields. Known as thermal cracking, the chemists discover that by applying both heat and pressure during distillation, heavier petroleum molecules can be broken down, or cracked, into gasolineâs lighter molecules. The discovery is a boon to the new auto industry, whose fuel of choice is gasoline.