If the solubility product of PbS is 8 $$\times$$ 10^$$-$$28, then the solubility of PbS in pure water at 298 K is x $$\times$$ 10^$$-$$16 mol L^$$-$$1. The value of x is __________. (Nearest Integer)

[Given : $$\sqrt2$$ = 1.41]

The reaction between X and Y is first order with respect to X and zero order with respect to Y.

Examine the data of table and calculate ratio of numerical values of M and L. (Nearest Integer)

In a linear tetrapeptide (Constituted with different amino acids), (number of amino acids) $$-$$ (number of peptide bonds) is ________.

In bromination of Propyne, with Bromine, 1, 1, 2, 2-tetrabromopropane is obtained in 27% yield. The amount of 1, 1, 2, 2-tetrabromopropane obtained from 1 g of Bromine in this reaction is ___________ $$\times$$ 10^$$-$$1 g. (Nearest integer)

(Molar Mass : Bromine = 80 g/mol)