Q. 1. What is the purpose of the "censor in the Church?"

A. 1. The censer, also known as a "thurible" is used to contain incense as it is burned. A server called a thurifer, sometimes assisted by a "boat bearer" who carries the receptacle for the incense, approaches the person conducting the service with the thurible charged with burning bricks of red-hot charcoal. Incense, in the form of pebbly grains or powder, is taken from what is called a "boat", and usually blessed with a prayer and spooned onto the coals. The thurible is then closed, and taken by the chain and swung by the priest, deacon or server or acolyte towards what or whom is being censed: the bread and wine offered for the Eucharist, the consecrated Eucharist itself, the Gospel during its proclamation (reading), the crucifix, the icons (in Eastern churches), the clergy, the congregation, the Paschal candle or the body of a deceased person during a funeral.

Incense may be used in Christian worship at the celebration of the Eucharist, at solemn celebrations of the Divine Office, in particular at Solemn Vespers, at Solemn Evensong, at funerals, benediction and exposition of the Eucharist, the consecration of a church or altar and at other services. [Source: https://en.wikipedia.org/wiki/Religious_use_of_incense]