The increasing order of nucleophilicity of the following nucleophiles is :
(a) CH₃CO₂^$$-$$           (b) H₂O
(c) CH₃SO₃^$$-$$           (d) $$\mathop O\limits^ - H$$

The major product 'Y' in the following reaction is :

Which one of the following graphs between molar conductivity ($${\Lambda _m}$$) versus $$\sqrt C $$ is correct ?

The crystal field stabilization energy (CFSE) of [Fe(H₂O)₆]Cl₂ and K₂[NiCl₄] respectively, are :