JEE P-Block Elements PYQs with Solutions PDF, Download Now

Given below are two statements:
Statement I: The number of pairs among $$[SiO_{2},CO_{2}],[SnO,SnO_{2}],[PbO,PbO_{2]}\text{ and } [GeO,GeO_{2}]$$, which contain oxides that are both amphoteric is 2.
Statement ll: $$BF_{3}$$ is an electron deficient molecule, can act as a Lewis add, forms adduct with $$NH_{3}$$ and has a trigonal planar geometry.
In the light of the above statements, choose the correct answer from the options given below:

Given below are two statements:
Statement I : Elements 'X' and 'Y' are the most and least electronegative elements, respectively among N, As, Sb and P. The nature of the oxides $$X_{2}O_{3}$$ and $$y_{2}O_{3}$$ is acidic and
amphoteric, respectively.
Statement II:$$BCl_{3}$$ is covalent in nature and gets hydrolysed in water. It produces $$[B(OH)_{4}]^{-}$$ and $$[B(H_{2}O)_{6}]^{3+}$$ in aqueous medium.
In the Light of the above statements, choose the correct answer from the options given below:

The correct statements from the following are:
A. Ionic radii of trivalent cations of group 13 elements decreases down the group.
B. Electronegativity of group 13 elements decreases down the group.
C. Among the group 13 elements, Boron has highest first ionisation enthalpy.
D. The trichloride and triiodide of group 13 elements are covalent in nature.
Choose the correct answer from the options given below :

Given below are two statements:

Statement I: The halogen that makes longest bond with hydrogen in HX, has the smallest covalent radius in its group.

Statement II: A group 15 element's hydride $$EH_{3}$$ has the lowest boiling point among corresponding hydrides of other group 15 elements. The maximum covalency of that element E is 4.

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

A 'p'-block element (E) and hydrogen form a binary cation $$(EH_{x})^{+}$$ , while $$EH_{3}$$ on treatment with $$K_{2}HgI_{4}$$ in alkaline medium gives a precipitate of basic mercury(II)amido- iodine. Given below are first ionisation enthalpy values ($$kJ mol^{-1}$$) for first element each from group 13, 14, 15 and 16. Identify the correct first ionisation enthalpy value for element E.

"X" is an oxoanion of the lightest element of group 7 (in the periodic table). The metal is in +6 oxidation state in "X". The color of the potassium salt of X is

Choose the INCORRECT statement

Regarding the hydrides of group 15 elements $$EH_{3}$$(E = N, P, As, Sb), select the correct statement from the following:
A. The stability of hydrides decreases down the group.
B. The basicity of hydrides decreases down the group.
C. The reducing character increases down the group.
D. The boiling point increases down the group.
Choose the correct answer from the options given below:

It is noticed that $$Pb^{2+}$$ is more stable than $$Pb^{4+}$$ but $$Sn^{2+}$$ is less stable than $$Sn^{4+}$$
Observe the following reactions.

$$ PbO_2+Pb\rightarrow 2PbO;\triangle_rG^{o}(1) $$
$$ SnO_2+Sn\rightarrow 2SnO;\triangle_rG^{o}(2) $$

Identify the correct set from the following

Consider the following reactions
$$\begin{aligned}\mathrm{Na_2B_4O_7} & \xrightarrow{\Delta} 2X + Y \\[6pt]\mathrm{CuSO_4} + Y &\xrightarrow{\text{Non-luminous flame}} Z + \mathrm{SO_3}\\[6pt]2Z + 2X + \mathrm{C}&\xrightarrow{\text{Luminous flame}} 2Q +\mathrm{Na_2B_4O_7} + \mathrm{CO}\end{aligned}$$
The oxidation states of Cu in Z and Q, respectively are:

The large difference between the melting and boiling points of oxygen and sulphur may be explained on the basis of

Given below are two statements :
Statement (I) : The first ionization energy of Pb is greater than that of Sn .
Statement (II) : The first ionization energy of Ge is greater than that of Si .
In the light of the above statements, choose the correct answer from the options given below :

The incorrect statement among the following is options .

The type of oxide formed by the element among Li, Na, Be, Mg, B and Al that has the least atomic radius is :

First ionisation enthalpy values of first four group 15 elements are given below. Choose the correct value for the element that is a main component of apatite family :

The number of the correct reaction(s) among the following is ______

Identify the inorganic sulphides that are yellow in colour : (A) $$\mathrm{(NH_4)_2S}$$ (B) $$\mathrm{PbS}$$ (C) $$\mathrm{CuS}$$ (D) $$\mathrm{As_2S_3}$$ (E) $$\mathrm{As_2S_5}$$ Choose the correct answer from the options given below :

A group 15 element forms $$d\pi-d\pi$$ bond with transition metals. It also forms hydride, which is a strongest base among the hydrides of other group members that form $$d\pi-d\pi$$ bond. The atomic number of the element is ____.

Among the following oxides of p-block elements: $$Cl_2O_7$$, $$CO$$, $$PbO_2$$, $$N_2O$$, $$NO$$, $$Al_2O_3$$, $$SiO_2$$, $$N_2O_5$$, $$SnO_2$$, the number of amphoteric oxides is:

Given below are two statements:
Statement (I): $$SiO_2$$ and $$GeO_2$$ are acidic while SnO and PbO are amphoteric in nature.
Statement (II): Allotropic forms of carbon are due to property of catenation and $$p\pi - d\pi$$ bond formation.
In the light of the above statements, choose the most appropriate answer from the options given below:

The strongest reducing agent among the following is:

Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R).

Assertion (A) : Melting point of Boron (2453 K) is unusually high in group 13 elements.

Reason (R) : Solid Boron has very strong crystalline lattice.

In the light of the above statements, choose the most appropriate answer from the options given below:

Element not showing variable oxidation state 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, choose the most appropriate answer from the options given below:

Match List-I with List-II.

Choose the correct answer from the options given below:

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 from the options given below :

Identify the incorrect pair from the following :

Match List I with List II

Choose the correct answer from the options given below:

Anomalous behaviour of oxygen is due to its

Match List I with List II

Choose the correct answer from the options given below:

Match List - I with List-II

Given below are two statements: One is labelled as Assertion A and the other is labelled as Reason R.
Assertion A: $$H_2Te$$ is more acidic than $$H_2S$$.
Reason R: Bond dissociation enthalpy of $$H_2Te$$ is lower than $$H_2S$$.
In the light of the above statements, choose the most appropriate from the options given below.

Choose the correct statements about the hydrides of group 15 elements.
A. The stability of the hydrides decreases in the order $$NH_3 > PH_3 > AsH_3 > SbH_3 > BiH_3$$
B. The reducing ability of the hydrides increases in the order $$NH_3 < PH_3 < AsH_3 < SbH_3 < BiH_3$$
C. Among the hydrides, $$NH_3$$ is strong reducing agent while $$BiH_3$$ is mild reducing agent.
D. The basicity of the hydrides increases in the order $$NH_3 < PH_3 < AsH_3 < SbH_3 < BiH_3$$
Choose the most appropriate from the options given below:

Consider the oxides of group 14 elements $$SiO_2, GeO_2, SnO_2, PbO_2, CO$$ and $$GeO$$. The amphoteric oxides are

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 boiling points.

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

Molar mass of the salt from $$NaBr, NaNO_3, KI$$ and $$CaF_2$$ which does not evolve coloured vapours on heating with concentrated $$H_2SO_4$$ is ____ g mol$$^{-1}$$. (Molar mass in g mol$$^{-1}$$: Na: 23, N: 14, K: 39, O: 16, Br: 80, I: 127, F: 19, Ca: 40)

Given below are two statements:
Statement I: Group 13 trivalent halides get easily hydrolysed by water due to their covalent nature.
Statement II: AlCl$$_3$$ upon hydrolysis in acidified aqueous solution forms octahedral $$[Al(H_2O)_6]^{3+}$$ ion.
In the light of the above statements, choose the correct answer from the options given below:

Choose the correct statements from the following:
A. All group 16 elements form oxides of general formula $$EO_2$$ and $$EO_3$$ where $$E = S, Se, Te$$ and $$Po$$. Both the types of oxides are acidic in nature.
B. $$TeO_2$$ is an oxidising agent while $$SO_2$$ is reducing in nature.
C. The reducing property decreases from $$H_2S$$ to $$H_2Te$$ down the group.
D. The ozone molecule contains five lone pairs of electrons.
Choose the correct answer from the options given below:

When $$MnO_2$$ and $$H_2SO_4$$ is added to a salt (A), the greenish yellow gas liberated as salt (A) is:

The correct statements from the following are : (A) The decreasing order of atomic radii of group 13 elements is $$Tl > In > Ga > Al > B$$. (B) Down the group 13 electronegativity decreases from top to bottom. (C) Al dissolves in dil. HCl and liberates $$H_2$$ but conc. $$HNO_3$$ renders Al passive by forming a protective oxide layer on the surface. (D) All elements of group 13 exhibits highly stable +1 oxidation state. (E) Hybridisation of Al in $$[Al(H_2O)_6]^{3+}$$ ion is $$sp^3d^2$$. Choose the correct answer from the options given below :