The compound formed as a result of oxidation of ethyl benzene by KMnO₄ is :

Which of the following reactions will yield 2, 2-dibromopropane?

The reaction of toluene with Cl₂ in presence of FeCl₃ gives predominantly

A 5.25 % solution of a substance is isotonic with a 1.5% solution of urea (molar mass = 60 g mol⁻¹) in the same solvent. If the densities of both the solutions are assumed to be equal to 1.0 g cm⁻³, molar mass of the substance will be