MCQ
Identify the reagent(s) $'A'$ and condition(s) for the reaction :


- A$A = HCl ;$ Anhydrous $AlCl _{3}$
- B$A = HCl , ZnCl _{2}$
- ✓$A = Cl _{2} ; UV$ light
- D$A = Cl _{2}$; dark, Anhydrous $AlCl _{3}$

The reaction is free radical halogenation.
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Assertion : The $pH$ of water increases with increase in temperature.
Reason : The dissociation of water into $H^+$ and $OH^-$ is an exothermic reaction.
$(iii)$ Size $(iv)$ Energy level