The correct match between items I and II is :

Item-I (Mixture)		Item-II (Seperation method)
(A)	H2O : Sugar	(P)	Sublimation
(B)	H2O : Aniline	(Q)	Recrystallization
(C)	H2O : Toluene	(R)	Steam distillation
		(S)	Differential extraction

The major product of the following reaction is :

Heat treatment of muscular pain involves radiation of wavelength of about 900 nm. Which spectral line of H atom is suitable for this purpose?

[R_H = 1 $$ \times $$ 10⁵ cm^–1, h = 6.6 $$ \times $$ 10^–34 Js, c = 3 $$ \times $$ 10⁸ ms^–1]

The element that usually does NOT show variable oxidation states is :