The solubility of iodine in water increases in the presence of

When $Cl_2$ is passed through cold dil. $NaOH$,the products are:

Which of the following properties does not correspond to the order $HI < HBr < HCl < HF$?

Affinity for hydrogen decreases in the group from fluorine to iodine. Which of the halogen acids should have the highest bond dissociation enthalpy?

Which of the following statements is incorrect?

Chlorine was discovered by