The qualitative sketches I, II and III given below show the variation of surface tension with molar concentration of three different aqueous solutions of KCl, CH₃OH and CH₃(CH₂)₁₁ OSO$$_3^ - $$ Na⁺ at room temperature. The correct assignment of the sketches is

For "invert sugar", the correct statement(s) is(are)

(Given : specific rotations of (+)-sucrose, (+)-maltose, L-($$-$$)-glucose and L-(+)-fructose in aqueous solution are +66$$^\circ$$, +140$$^\circ$$, $$-$$52$$^\circ$$ and +92$$^\circ$$, respectively.)

Among the following reaction(s), which gives(give) tert-butyl benzene as the major product is(are)

Reagent(s) which can be used to bring about the following transformation is(are)