p-Hydroxybenzophenone upon reaction with bromine in carbon tetrachloride gives:

In an acid-base titration, 0.1 M HCl solution was added to the NaOH solution of unknown strength. Which of the following correctly shows the change of pH of the titraction mixture in this experiment?

HF has highest boiling point among hydrogen halides, because it has :

Which of the following compounds is a constituent of the polymer