Question

diff. b/w custom animation and slide transition

Answer 1

 Custom Animation is a set of effects which can be applied to objects in PowerPoint so that they will animate in the Slide Show. They can be added under the Custom Animation function or through the use of Visual Basic for Applications (VBA). PowerPoint 2000 and earlier versions introduced basic effects such as Appear, Dissolve, Fly In and so forth. In PowerPoint 2002/XP and later versions, the Custom Animation feature was improved, adding new animation effects grouped into four categories: Entrance, Emphasis, Exit, and Motion Paths. The effects were later modified in PowerPoint 2010.

Slide transitions are the visual movements as one slide changes to another. Many different slide transitions are available in programs such as PowerPoint or OpenOffice Impress.