Question

Equal volumes of water put in 100cm³ glass beaker and heated for 5 minutes using Bunsen flames. It was observed that water in beaker A registered higher temperature than beaker B.

1. Name the kind of flame used in beaker; A
2. State the condition under which flame that heated B was produced. 

Answer 1

1. A = Non Luminous
2. When the air hole is closed.