GATE CY 2019 Question Paper (02-Feb-2019) (Shift 1)

The number of ¹H NMR signals observed for the following compound is _______.

The number of CO stretching bands in IR spectrum of trigonal bipyramidal cis-M(CO)3L² is ________.

(M = metal and L = monodentate ligand)

On heating a sample of 25 mg hydrated compound (molecular weight = 250 g/mol) in thermogravimetric analysis, 16 mg of dehydrated compound remains. The number of water molecules lost per molecule of hydrated compound is ________.

(Molecular weight of water = 18 g/mol)

The total number of a and f particles emitted in the following radioactive decay is ______.

${}_{92}^{238}\mathrm{U}{\to }_{82}^{210}\mathrm{Pb}$

An ideal gas occupies an unknown volume V liters (L) at a pressure of 12 atm. The gas is expanded isothermally against a constant external pressure of 2 atm so that its final volume becomes 3 L. The work involved for this expansion process is cal. (Round off to two decimal places)

(Gas constant R = 0.082 L atm mol⁻¹ K⁻¹ = 2 cal mol⁻¹ K⁻¹)