$\left[\mathrm{Co}\left(\mathrm{NH}_3\right)_6\right]^{3+}$ and $\left[\mathrm{CoF}_6\right]^{3-}$ are respectively known as :

The transition metal having highest $3^{\text {rd }}$ ionisation enthalpy is :

Match List - I with List - II.

List I (Compound)	List II (Use)
(A) Carbon tetrachloride	(I) Paint remover
(B) Methylene chloride	(II) Refrigerators and air conditioners
(C) DDT	(III) Fire extinguisher
(D) Freons	(IV) Non Biodegradable insecticide

Choose the correct answer from the options given below :

Match List - I with List - II.

List I (Reactants)	List II (Product)
(A) Phenol, Zn/Δ	(I) Salicylaldehyde
(B) Phenol, CHCl3, NaOH, HCl	(II) Salicylic acid
(C) Phenol, CO2, NaOH, HCl	(III) Benzene
(D) Phenol, Conc. HNO3	(IV) Picric acid

Choose the correct answer from the options given below :