Consider the following reaction :
The product 'P' gives positive ceric ammonium nitrate test. This is because of the presence of which of these –OH group(s)?

Three isomers A, B and C (mol. formula C₈H₁₁N) give the following results :
R has lower boiling point than S

A, B and C, respectively are :

Consider the hypothetical situation where the azimuthal quantum number, $$l$$, takes values 0, 1, 2, ....., n + 1, where n is the principal quantum number. Then, the element with atomic number :

If 250 cm³ of an aqueous solution containing 0.73 g of a protein A is isotonic with one litre of another aqueous solution containing 1.65 g of a protein B, at 298 K, the ratio of the molecular masses of A and B is ______ × 10^–2 (to the nearest integer).