Group 16

Given below are two statements:

Statement I: The covalency of oxygen is generally two but it can exceed upto four. The oxidation state of oxygen in $\ce{SO2}$ is −2 and in $\ce{OF2}$ it is +2.

Statement II: The anomalous behaviour of oxygen when compared to the other elements of group 16 is due to its small size and high electronegativity.

In the light of the above statements, choose the correct answer from the options given below

A paper dipped in a dil. $\ce{H2SO4}$ solution of 'X' upon treatment with $\ce{SO2}$ gas turns into green. The compound 'X' is :

The compound(s) having peroxide linkage is(are)

The correct order of melting points of hydrides of group 16 elements is :

Amongst the following, the number of oxide(s) which are paramagnetic in nature is

$\mathrm{Na_2O}$, $\mathrm{KO_2}$, $\mathrm{NO_2}$, $\mathrm{N_2O}$, $\mathrm{ClO_2}$, NO, $\mathrm{SO_2}$, $\mathrm{Cl_2O}$

Consider the following reactions (unbalanced)

$\ce{Zn}$ + hot conc. $\ce{H2SO4} \to$ G + R + X

$\ce{Zn}$ + conc. $\ce{NaOH} \to$ T + Q

G + $\ce{H2S}$ + $\ce{NH4OH} \to$ Z (a precipitate) + X + Y

Choose the correct option(s)

The amount of water produced (in g) in the oxidation of 1 mole of rhombic sulphur by conc. $\ce{HNO3}$ to a compound with the highest oxidation state of sulphur is ______

(Given data: Molar mass of water = 18 g mol⁻¹)

W and X are, respectively

Identify the incorrect statement :

The correct statement(s) about $\ce{O3}$ is(are)

R, S and T, respectively, are

The unbalanced chemical reactions given in List I show missing reagent or condition (?) which are provided in List II. Match List I with List II and select the correct answer using the code given below the lists:

Aqueous solution of $\ce{Na2S2O3}$ on reaction with $\ce{Cl2}$ gives

Among the following, the paramagnetic compound is