Question

Which of the following is a popular household filter?

• A. Waterfall filter
• B. Spiral filter
• C. Candle type filter
• D. Metal filter

Answer 1

The correct option is C

Candle type filter

Candle type filter is a popular household filter. Ceramic candle filters are simple devices made out of clay and used to filter drinking water in order to removes turbidity, suspended materials and pathogens. Removal takes place by physical process such as mechanical trapping and adsorption on the ceramic candles, which have micro-scale pores. Water is poured into the upper container and it then flows through a candle situated at the bottom. Once the water has passed through the candle, it is collected in the lower container. This system treats the water and provides safe storage until it is used.