p-Block Elements — JEE Main PYQs

From the given list, the number of compounds with +4 oxidation state of Sulphur ____.
${\mathrm{SO}}_3,{\mathrm{H}}_2{\mathrm{SO}}_3,{\mathrm{SOCl}}_2,{\mathrm{SF}}_4,{\mathrm{BaSO}}_4,{\mathrm{H}}_2{\mathrm{S}}_2{\mathrm{O}}_7$

The strongest reducing agent amont the following is:

Given below are two statements:

Statement (I): SiO₂ and GeO₂ are acidic while SnO and PbO are amphoteric in nature.
Statement (II): Allotropic forms of carbon are due to property of catenation and pπ-dπ bond formation.

In the light of the above statements, choose the most appro …

Among the following oxide of p - block elements, number of oxides having amphoteric nature is …

Given below are two statements:

Statement (I) : Oxygen being the first member of group 16 exhibits only -2 oxidation state.
Statement (II) : Down the group 16 stability of +4 oxidation state decreases and +6 oxidation state increases.

In the light of the above statements, choos …

Given below are two statements :

Statement I : The electronegativity of group 14 elements from Si to Pb gradually decreases.
Statement II : Group 14 contains non-metallic, metallic, as well as metalloid elements.
In the light of the above statements, choose the most appropriate …

Identify the incorrect pair from the following :

Anomalous behaviour of oxygen is due to its

Give below are two statements:

Statement-I : Noble gases have very high boiling points.
Statement-II: Noble gases are monoatomic gases. They are held together by strong dispersion forces. Because of this they are liquefied at very low temperature. Hence, they have very high boil …

Consider the oxides of group 14 elements ${\mathrm{SiO}}_2,{\mathrm{GeO}}_2,{\mathrm{SnO}}_2,{\mathrm{PbO}}_2,\mathrm{CO}$ and GeO . The amphoteric oxides are

Given below are two statements :

Statement I: ${\mathrm{S}}_8$ solid undergoes disproportionation reaction under alkaline conditions to form ${\mathrm{S}}^{2-}$ and ${\mathrm{S}}_2{\mathrm{O}}_3{}^{2-}$

Statement II: ${\mathrm{ClO}}_4^{-}$can undergo disproportionation …

Choose the correct statements from the following
A. All group 16 elements form oxides of general formula and where and Po. Both the types of oxides are acidic in nature.
B. …

Given below are two statements :

Statement I: Group 13 trivalent halides get easily hydrolyzed by water due to their covalent nature.

Statement II: ${\mathrm{AlCl}}_3$ upon hydrolysis in acidified aqueous solution forms octahedral …

Given below are two statements: One is labelled as Assertion A and the other is labelled as Reason R.
Assertion A : ${\mathrm{H}}_2\mathrm{Te}$ is more acidic than ${\mathrm{H}}_2\mathrm{S}$.
Reason R: Bond dissociation enthalpy of ${\mathrm{H}}_2\mathrm{Te}$ is lower t …

Choose the correct statements about the hydrides of group 15 elements.
A. The stability of the hydrides decreases in the order ${\mathrm{NH}}_3>{\mathrm{PH}}_3>{\mathrm{AsH}}_3>{\mathrm{SbH}}_3>{\mathrm{BiH}}_3$
B. The reducing ability of the hydrides increases in the order …

Match List I with List II (Group-13 elements B, Al, Ga, In, Tl):
List-I: A. Melting point [K] B. Ionic Radius [M³⁺/pm] C. First ionization enthalpy [kJ mol⁻¹] D. Atomic Radius [pm]
List-II: I. Tl > In > Ga > Al > B II. B > Tl > Al ≈ Ga > In III. Tl > In > Al > Ga > B IV. …

Match List I with List II

List I (Oxide) | List II (Type of Bond)
A. N₂O₄ | I. 1 N=O bond
B. NO₂ | II. 1 N-O-N bond
C. N₂O₅ | III. 1 N-N bond
D. N₂O | IV. 1 N=N/N≡N bond

Choose the correct answer from the options given below:

Group-13 elements react with ${\mathrm{O}}_2$ in amorphous form to form oxides of type ${\mathrm{M}}_2{\mathrm{O}}_3$ ($\mathrm{M}=$ element). Which among the following is the most basic oxide?

Which one of the following elements will remain as liquid inside pure boiling water?

The number of species from the following carrying a single lone pair on central atom Xenon is ____:
${\mathrm{XeF}}_5{}^{+},{\mathrm{XeO}}_3,{\mathrm{XeO}}_2{\mathrm{F}}_2,{\mathrm{XeF}}_5^{-},{\mathrm{XeO}}_3{\mathrm{F}}_2,{\mathrm{XeOF}}_4$, ${\mathrm{XeF}}_4$

The difference in the oxidation state of Xe between the oxidised product of Xe formed on complete hydrolysis of ${\mathrm{XeF}}_4$ and ${\mathrm{XeF}}_4$ is ______

The water gas on reacting with cobalt as a catalyst forms

Which halogen is known to cause the reaction given below:

$\mathrm{XeF}{}_4$ reacts with $\mathrm{SbF}{}_5$ to form $[\mathrm{XeF}{}_m{]}^{n+}[\mathrm{SbF}{}_y{]}^{z-}$

$m+n+y+z=$ ______

In the following reactions, the total number of oxygen atoms in X and Y is ____
${\mathrm{Na}}_2\mathrm{O}+{\mathrm{H}}_2\mathrm{O}\to 2\mathrm{X}$
${\mathrm{Cl}}_2{\mathrm{O}}_7+{\mathrm{H}}_2\mathrm{O}\to 2\mathrm{Y}$

The sum of lone pairs present on the central atom of the interhalogen ${\mathrm{IF}}_5$ and ${\mathrm{IF}}_7$ is ____

For compound having the formula ${\mathrm{GaAlCl}}_4$, the correct option from the following is

One mole of ${\mathrm{P}}_4$ reacts with 8 moles of ${\mathrm{SOCl}}_2$ to give 4 moles of A , $x$ mole of ${\mathrm{SO}}_2$ and 2 moles of B. A, B and $x$ respectively are

Given below are two statements:
Statement I: ${\mathrm{SbCl}}_5$ is more covalent than ${\mathrm{SbCl}}_3$
Statement II: The higher oxides of halogens also tend to be more stable than the lower ones.
In the light of the above statements, choose the most appropriate answer fro …

Given below are two statements :
Statement I: Boron is extremely hard indicating its high lattice energy
Statement II : Boron has highest melting and boiling point compared to its other group members.
In the light of the above statements, choose the most appropriate answer from t …

The incorrect statement from the following for borazine is:

If the formula of Borax is ${\mathrm{Na}}_2{\mathrm{B}}_4{\mathrm{O}}_x(\mathrm{OH}{)}_y\cdot z{\mathrm{H}}_2\mathrm{O}$, then $x+y+z=$ ______.

The number of $\mathrm{P}-\mathrm{O}-\mathrm{P}$ bonds in ${\mathrm{H}}_4{\mathrm{P}}_2{\mathrm{O}}_7$, ${\left({\mathrm{HPO}}_3\right)}_3$ and ${\mathrm{P}}_4{\mathrm{O}}_{10}$ are respectively.

Given below are two statements:

Statement I: Chlorine can easily combine with oxygen to from oxides; and the product has a tendency to explode.
Statement II: Chemical reactivity of an element can be determined by its reaction with oxygen and halogens.
In the light of the above s …

Sum of oxidation states of bromine in bromic acid and perbromic acid is ____.

Which of the Phosphorus oxoacid can create silver mirror from ${\mathrm{AgNO}}_3$ solution ?

Sum of $\pi$-bonds present in peroxodisulphuric acid and pyrosulphuric acid is

Reaction of thionyl chloride with white phosphorus forms a compound [A], which on hydrolysis gives [B], a dibasic acid. [A] and [B] are respectively

The total number of lone pairs of electrons on oxygen atoms of ozone is ______

Given below are two statements, one is labelled as Assertion A and the other is labelled as Reason R

Assertion A :- Carbon forms two important oxides -CO and ${\mathrm{CO}}_2$. CO is neutral whereas ${\mathrm{CO}}_2$ is acidic in nature.

Reason R:- ${\mathrm{CO}}_2$ can combine …

The bond dissociation energy is highest for

"A" obtained by Ostwald's method involving air oxidation of ${\mathrm{NH}}_3$, upon further air oxidation produces "B". "B" on hydration forms an oxoacid of Nitrogen along with evolution of "A". The oxoacid also produces "A" and gives positive brown ring test

During the borax bead test with ${\mathrm{CuSO}}_4$, a blue green colour of the bead was observed in oxidising flame due to the formation of

Total number of acidic oxides among
${\mathrm{N}}_2{\mathrm{O}}_3,{\mathrm{NO}}_2,{\mathrm{N}}_2\mathrm{O},{\mathrm{Cl}}_2{\mathrm{O}}_7,{\mathrm{SO}}_2,\mathrm{CO},\mathrm{CaO},{\mathrm{Na}}_2\mathrm{O}$ and NO is ____.

Given below are two statements :

Statement I: Upon heating a borax bead dipped in cupric sulphate in a luminous flame, the colour of the bead becomes green.
Statement II : The green colour observed is due to the formation of copper(I) metaborate.
In the light of the above statem …

Bond dissociation energy of E-H bond of the "${\mathrm{H}}_2\mathrm{E}$" hydrides of group 16 elements (given below), follows order.
(A) O
(B) S
(C) Se
(D) Te

The oxidation state of phosphorus in hypophosphoric acid is + ______.

When borax is heated with CoO on a platinum loop, blue coloured bead formed is largely due to :

Dinitrogen is a robust compound, but reacts at high altitude to form oxides. The oxide of nitrogen that can damage plant leaves and retard photosynthesis is :

Consider the following sulphure based oxoacids.
${\mathrm{H}}_2{\mathrm{SO}}_3,{\mathrm{H}}_2{\mathrm{SO}}_4,{\mathrm{H}}_2{\mathrm{S}}_2{\mathrm{O}}_8$ and ${\mathrm{H}}_2{\mathrm{S}}_2{\mathrm{O}}_7$.
Amongst these oxoacids, the number of those with peroxo(O-O) bo …