Consider the following reversible chemical reactions :



The relation between K₁ and K₂ is :

The correct sequence of amino acids present in the tripeptide given below is :

The products formed in the reaction of cumene with O₂ followed by treatment with dil. HCl are :

The tests performed on compound X and their inferences are :

	Test	Inference
(a)	2, 4 - DNP test	Coloured precipitate
(b)	Idoform test	Yellow precipitate
(c)	Azo-dye test	No dye formation

Compound 'X' is :