JEE (Advanced) 2017 Paper-1

The correct statement(s) about the oxoacids, $$HClO_4$$ and $$HClO$$, is(are)

The colour of the $$X_2$$ molecules of group 17 elements changes gradually from yellow to violet down the group. This is due to

Addition of excess aqueous ammonia to a pink coloured aqueous solution of $$MCl_2.6H_2O(X)$$ and $$NH_4Cl$$ gives an octahedral complex Y in the presence of air. In aqueous solution, complex Y behaves as 1:3 electrolyte. The reaction of X with excess HCl at room temperature results in the formation of a blue coloured complex Z. The calculated spin only magnetic moment of X and Z is 3.87 B.M., whereas it is zero for complex Y. Among the following options, which statement(s) is(are) correct?

The IUPAC name(s) of the following compound is(are)

The correct statement(s) for the following addition reactions is(are)

A crystalline solid of a pure substance has a face-centred cubic structure with a cell edge of 400 pm. If the density of the substance in the crystal is 8 g $$cm^{-3}$$, then the number of atoms present in 256 g of the crystal is $$N \times 10^{24}$$. The value of N is

The conductance of a 0.0015 M aqueous solution of a weak monobasic acid was determined by using a conductivity cell consisting of platinized Pt electrodes. The distance between the electrodes is 120 cm with an area of cross section of $$1 cm^2$$. The conductance of this solution was found to be $$5 \times 10^{-7} S$$. The pH of the solution is 4. The value of limiting molar conductivity $$\left(\bigwedge_m^0\right)$$ of this weak monobasic acid in aqueous solution is $$Z \times 10^2 S cm^{-1} mol^{-1}$$. The value of Z is

The sum of the number of lone pairs of electrons on each central atom in the following species is
$$\left[TeBr_6 \right]^{2−}, \left[BrF_2 \right]^+, SNF_3$$, and $$\left[XeF_3 \right]^−$$
(Atomic numbers: N = 7, F = 9, S = 16, Br = 35, Te = 52, Xe = 54)

Among $$H_2, He_2^+, Li_2, Be_2, B_2, C_2, N_2, O_2^−$$, and $$F_2$$, the number of diamagnetic species is
(Atomic numbers: H = 1, He = 2, Li = 3, Be = 4, B = 5, C = 6, N = 7, O = 8, F = 9)

Among the following, the number of aromatic compound(s) is