What two substances are indicated by the cobalt chloride and the lime water tests? is it possible that other substances are produced when the candle burns?

The cobalt chloride and lime water test is a test to identify the products of combustion.

Two substances that are indicated by the cobalt chloride and lime water tests are water and carbon dioxide. In this test, the clear lime water turns milky that proves the presence of carbon dioxide. The blue cobalt chloride paper turns pink that proves the presence of water.

No, it is not possible to produce any other substances while burning a candle in this test. When the candle is burning, the substances produced are carbon dioxide and water.

The two substances indicated with cobalt chloride and lime water tests are carbon dioxide and water. If there is carbon dioxide, the lime water will go cloudy. And to prove the water, if the flask of another water tube is wrapped in cold water, drops of condensed water will form on the outside of the flask. The blue cobalt paper will turn pink with water present.