How can phenol and cyclohexanol be distinguished?

Which of the following is true regarding the solubility of $p$-nitrophenol and salicylaldehyde in a base?

In which of the following,ortho/para substitution by an electrophile is very facile?

The given reaction can occur in the presence of:
$(1)$ Bromine water
$(2)$ $Br_2$ in $CS_2, 273 \ K$
$(3)$ $Br_2 / FeBr_3$
$(4)$ $Br_2$ in $CHCl_3, 273 \ K$
Choose the correct answer from the options given below:
[Image: Phenol reacting to form p-bromophenol as the major product]

What is the correct order of acidity for the following compounds?

For the given compounds,the correct order of increasing $pK_{a}$ value is: