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.
caustic. 1  that can burn, eat away, or destroy tissue by chemical action; corrosive. 2  cutting or sarcastic in utterance; biting. 3  designating or of the curved radial surface, or a plane curve in this surface, formed by the reflection or refraction of rays from a curved solid surface.