p-Block Elements — JEE Advanced PYQs

The nitrogen oxide(s) that contain(s) N-N bond(s) is(are)

Match each of the reactions given in Column I with the corresponding product(s) given in Column II.
| (C …

The coordination number of Al in the crystalline state of ${\mathrm{AlCl}}_3$ is

Aqueous solution of ${\mathrm{Na}}_2{\mathrm{S}}_2{\mathrm{O}}_3$ on reaction with ${\mathrm{Cl}}_2$ gives

A solution of colourless salt $\mathbf{H}$ on boiling with excess NaOH produces a non-flammable gas. The gas evolution ceases after sometime. Upon addition of Zn dust to the same solution, the gas evolution restarts. The colourless salt(s) $\mathbf{H}$ is (are)

STATEMENT-1 : ${\mathrm{Pb}}^{4+}$ compounds are stronger oxidizing agents than ${\mathrm{Sn}}^{4+}$ compounds.
and
STATEMENT-2 : The higher oxidation states for the group 14 elements are more stable for the heavier members of the group due to 'inert pair effect'.

There are some deposits of nitrates and phosphates in earth's crust. Nitrates are more soluble in water. Nitrates are difficult to reduce under the laboratory conditions but microbes do it easily. Ammonia forms large number of complexes with transition metal ions. Hybridization e …

There are some deposits of nitrates and phosphates in earth's crust. Nitrates are more soluble in water. Nitrates are difficult to reduce under the laboratory conditions but microbes do it easily. Ammonia forms large number of complexes with transition metal ions. Hybridization e …

There are some deposits of nitrates and phosphates in earth's crust. Nitrates are more soluble in water. Nitrates are difficult to reduce under the laboratory conditions but microbes do it easily. Ammonia forms large number of complexes with transition metal ions. Hybridization e …

$\mathrm{B}(\mathrm{OH}{)}_3+\mathrm{NaOH}\rightleftharpoons {\mathrm{NaBO}}_2+\mathrm{Na}[\mathrm{B}(\mathrm{OH}{)}_4]+{\mathrm{H}}_2\mathrm{O}$
How can this reaction is made to proceed in forward direction?

The species present in solution when ${\mathrm{CO}}_2$ is dissolved in water are

Match the following:

Column I
(A) ${\mathrm{Bi}}^{3+}⟶(\mathrm{BiO}{)}^{+}$
(B) ${\left[{\mathrm{AlO}}_2\right]}^{-}⟶\mathrm{Al}(\mathrm{OH}{)}_3$
(C) ${\mathrm{SiO}}_4^{4-}⟶{\mathrm{Si}}_2{\mathrm{O}}_7^{6-}$
(D) …