What type of color is observed when a compound absorbs red coloured light?

Which of the following compounds is formed when chloroform is exposed to air and light?

Identify the major product of dehydrohalogenation of $\text{CH}_3\text{-CH}_2\text{-CH(Br)-CH}_3$.

An organic compound with the molecular formula $\text{C}_6\text{H}_6\text{O}$ dissolves in NaOH, gives a characteristic colour with neutral $\text{FeCl}_3$ and on treatment with bromine water gives a tri bromo derivative. Which is that compound among the following?