GATE CY 2020 Question Paper (01-Feb-2020) (Shift 2)

The CORRECT statement with respect to the stereochemistry of a-hydroxy acids P and Q formed in the following reactions is:

The rate of solvolysis of the given compounds is in the order:

In the following reaction sequence, the major products Q and R are:

In the electronic absorption spectrum of an aqueous solution of [Ni(NH3)6]${}^{2+,}$ a very weak band is observed between the bands due to the transitions ³A2g → ³T₂g and ³A2g → ³T1g(F). The transition responsible for the very weak band is

(Given: atomic number of Ni is 28)

The experimental magnetic moment (3.4 BM) of a hydrated salt of Eu³⁺ at 27 °C is significantly different from the calculated value. The difference is due to

(Given: atomic number of Eu is 63)