p-Block Elements PYQs - Last 10 Years
JEE Main / Chemistry / Inorganic Chemistry / 230 recent questions
ChemistryInorganic Chemistry2017-2026
Practice 230 JEE Main Chemistry questions from p-Block Elements. Use the year-wise and type-wise breakdown to prioritize recent PYQs, then continue into the question list below.
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Chemistry / Inorganic Chemistry
2017-2026
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2022-2026
230
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2017-2026
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140 in last 5 years230 in last 10 years
Last 10 Years p-Block Elements Questions
Showing 50 of 230 filtered questions.
1P Block Elements
Dinitrogen is a robust compound, but reacts at high altitudes to form oxides. The oxide of nitrogen that can damage plant leaves and retard photosynthesis is :
MCQ+4 / -12022
2P Block Elements
When borax is heated with \(\mathrm{CoO}\) on a platinum loop, blue coloured bead formed is largely due to :
MCQ+4 / -12022
3P Block Elements
Given below are two statements.
Statement I : Stannane is an example of a molecular hydride.
Statement II : Stannane is a planar molecule.
In the light of the above statement, choose the most appropriate answer from the options given below.
Statement I : Stannane is an example of a molecular hydride.
Statement II : Stannane is a planar molecule.
In the light of the above statement, choose the most appropriate answer from the options given below.
MCQ+4 / -12022
4P Block Elements
In liquation process used for tin (Sn), the metal :
MCQ+4 / -12022
5P Block Elements
Given below are two statements :
Statement I : The pentavalent oxide of group-15 element, E2O5, is less acidic than trivalent oxide, E2O3, of the same element.
Statement II : The acidic character of trivalent oxide of group 15 elements, E2O...
Statement I : The pentavalent oxide of group-15 element, E2O5, is less acidic than trivalent oxide, E2O3, of the same element.
Statement II : The acidic character of trivalent oxide of group 15 elements, E2O...
MCQ+4 / -12022
6P Block Elements
Nitrogen gas is obtained by thermal decomposition of :
MCQ+4 / -12022
7P Block Elements
Which of the following oxoacids of sulphur contains "S" in two different oxidation states?
MCQ+4 / -12022
8P Block Elements
Among the given oxides of nitrogen ; N2O, N2O3, N2O4 and N2O5, the number of compound/(s) having N - N bond is :
MCQ+4 / -12022
9P Block Elements
Dinitrogen and dioxygen, the main constituents of air do not react with each other in atmosphere to form oxides of nitrogen because :
MCQ+4 / -12022
10P Block Elements
Concentrated \(\mathrm{HNO}_{3}\) reacts with Iodine to give :
MCQ+4 / -12022
11P Block Elements
White phosphorus reacts with thionyl chloride to give :
MCQ+4 / -12022
12P Block Elements
Heating white phosphorus with conc. NaOH solution gives mainly :
MCQ+4 / -12022
13P Block Elements
Match List - I with List - II.
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MCQ+4 / -12022
14P Block Elements
Given below are two statements : one is labelled as Assertion A and the other is labelled as Reason R.
Assertion A : Fluorine forms one oxoacid.
Reason R : Fluorine has smallest size amongst all halogens and is highly electronegative.
In th...
Assertion A : Fluorine forms one oxoacid.
Reason R : Fluorine has smallest size amongst all halogens and is highly electronegative.
In th...
MCQ+4 / -12022
15P Block Elements
The gas produced by treating an aqueous solution of ammonium chloride with sodium nitrite is :
MCQ+4 / -12022
16P Block Elements
Which oxoacid of phosphorous has the highest number of oxygen atoms present in its chemical formula?
MCQ+4 / -12022
17P Block Elements
Given below are two statements.
Statement I: The chlorides of \(\mathrm{Be}\) and \(\mathrm{Al}\) have Cl-bridged structure. Both are soluble in organic solvents and act as Lewis bases.
Statement II: Hydroxides of \(\mathrm{Be}\) and $$\mat...
Statement I: The chlorides of \(\mathrm{Be}\) and \(\mathrm{Al}\) have Cl-bridged structure. Both are soluble in organic solvents and act as Lewis bases.
Statement II: Hydroxides of \(\mathrm{Be}\) and $$\mat...
MCQ+4 / -12022
18P Block Elements
Given below are two statements. One is labelled as Assertion A and the other is labelled as Reason R.
Assertion A : Activated charcoal adsorbs SO2 more efficiently than CH4.
Reason R : Gases with lower critical temperatures are readily adso...
Assertion A : Activated charcoal adsorbs SO2 more efficiently than CH4.
Reason R : Gases with lower critical temperatures are readily adso...
MCQ+4 / -12022
19P Block Elements
Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R).
Assertion (A) : Boron is unable to form \(\mathrm{BF}_{6}^{3-}\).
Reason (R) : Size of B is very small.
In the light of the above sta...
Assertion (A) : Boron is unable to form \(\mathrm{BF}_{6}^{3-}\).
Reason (R) : Size of B is very small.
In the light of the above sta...
MCQ+4 / -12022
20P Block Elements
Consider the following reaction :
A + alkali \(\to\) B (Major Product)
If B is an oxoacid of phosphorus with no P-H bond, then A is :
A + alkali \(\to\) B (Major Product)
If B is an oxoacid of phosphorus with no P-H bond, then A is :
MCQ+4 / -12022
21P Block Elements
The correct order of melting points of hydrides of group 16 elements is :
MCQ+4 / -12022
22P Block Elements
Choose the correct stability order of group 13 elements in their + 1 oxidation state :
MCQ+4 / -12022
23P Block Elements
The oxide which contains an odd electron at the nitrogen atom is :
MCQ+4 / -12022
24P Block Elements
Which of the following elements is considered as a metalloid?
MCQ+4 / -12022
25P Block Elements
Borazine, also known as inorganic benzene, can be prepared by the reaction of 3-equivalents of "\(X\)" with 6-equivalents of "\(Y\)". "\(X\)" and "\(Y\)", respectively are :
MCQ+4 / -12022
26P Block Elements
Match List - I with List - II.
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MCQ+4 / -12022
27P Block Elements
The number of non-ionisable protons present in the product B obtained from the following reactions is ___________.
$$
\mathrm{C}_{2} \mathrm{H}_{5} \mathrm{OH}+\mathrm{PCl}_{3} \rightarrow \mathrm{C}_{2} {\mathrm{H}_{5} \mathrm{Cl}+\mathrm{...
$$
\mathrm{C}_{2} \mathrm{H}_{5} \mathrm{OH}+\mathrm{PCl}_{3} \rightarrow \mathrm{C}_{2} {\mathrm{H}_{5} \mathrm{Cl}+\mathrm{...
INTEGER+4 / -12022
28P Block Elements
Given below are two statements : one is labelled as Assertion A and the other is labelled as Reason R.
Assertion : Boric acid is a weak acid.
Reason R : Boric acid is not able to release \(\mathrm{H}^{+}\) ion on its own. It receives $$\mat...
Assertion : Boric acid is a weak acid.
Reason R : Boric acid is not able to release \(\mathrm{H}^{+}\) ion on its own. It receives $$\mat...
MCQ+4 / -12022
29P Block Elements
White precipitate of AgCl dissolves in aqueous ammonia solution due to formation of :
MCQ+4 / -12022
30P Block Elements
Consider the following reactions:
PCl3 + H2O \(\to\) A + HCl
A + H2O \(\to\) B + HCl
The number of ionisable protons present in the product B is _______________.
PCl3 + H2O \(\to\) A + HCl
A + H2O \(\to\) B + HCl
The number of ionisable protons present in the product B is _______________.
INTEGER+4 / -12022
31P Block Elements
The number of bridged oxygen atoms present in compound B formed from the following reactions is
Pb(NO3)2 \(\buildrel {673\,K} \over \longrightarrow\) A + PbO + O2
A \(\buildrel {Dimerise} \over \longrightarrow\) B
Pb(NO3)2 \(\buildrel {673\,K} \over \longrightarrow\) A + PbO + O2
A \(\buildrel {Dimerise} \over \longrightarrow\) B
MCQ+4 / -12022
32P Block Elements
The interhalogen compound formed from the reaction of bromine with excess of fluorine is a :
MCQ+4 / -12022
33P Block Elements
The geometry around boron in the product 'B' formed from the following reaction is
$$
\begin{aligned}
&\mathrm{BF}_{3}+\mathrm{NaH} \stackrel{450 \mathrm{~K}}{\rightarrow} \mathrm{A}+\mathrm{NaF} \\\\
&\mathrm{A}+\mathrm{NMe}_{3} \rightarro...
$$
\begin{aligned}
&\mathrm{BF}_{3}+\mathrm{NaH} \stackrel{450 \mathrm{~K}}{\rightarrow} \mathrm{A}+\mathrm{NaF} \\\\
&\mathrm{A}+\mathrm{NMe}_{3} \rightarro...
MCQ+4 / -12022
34P Block Elements
Match List I with List II
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...
MCQ+4 / -12022
35P Block Elements
Match List I with List II:
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overflow:hidden;padding:10px 5px;word-break:normal;}...
MCQ+4 / -12022
36P Block Elements
The total number of acidic oxides from the following list is
NO, N2O, B2O3, N2O5, CO, SO3, P4O10
NO, N2O, B2O3, N2O5, CO, SO3, P4O10
MCQ+4 / -12022
37P Block Elements
Which one of the following elemental forms is not present in the enamel of the teeth?
MCQ+4 / -12022
38P Block Elements
The most stable trihalide of nitrogen is :
MCQ+4 / -12022
39P Block Elements
Identify the correct statement for B2H6 from those given below :
(A) In B2H6, all B-H bonds are equivalent.
(B) In B2H6, there are four 3-centre-2-electron bonds.
(C) B2H6 is a Lewis acid.
(D) B2H6 can be synthesized from both BF3 and NaBH...
(A) In B2H6, all B-H bonds are equivalent.
(B) In B2H6, there are four 3-centre-2-electron bonds.
(C) B2H6 is a Lewis acid.
(D) B2H6 can be synthesized from both BF3 and NaBH...
MCQ+4 / -12022
40P Block Elements
PCl5 is well known, but NCl5 is not. because,
MCQ+4 / -12022
41P Block Elements
The number of halogen/(s) forming halic (V) acid is ___________.
INTEGER+4 / -12021
42P Block Elements
Consider the sulphides HgS, PbS, CuS, Sb2S3, As2S3 and CdS. Number of these sulphides soluble in 50% HNO3 is ___________.
INTEGER+4 / -12021
43P Block Elements
The number of S = O bonds present in sulphurous acid, peroxodisulphuric acid and pyrosulphuric acid, respectively are :
MCQ+4 / -12021
44P Block Elements
Which one of the following correctly represents the order of stability of oxides, X2O; (X = halogen)?
MCQ+4 / -12021
45P Block Elements
The product obtained from the electrolytic oxidation of acidified sulphate solutions, is :
MCQ+4 / -12021
46P Block Elements
Number of Cl = O bonds in chlorous acid, chloric acid and perchloric acid respectively are :
MCQ+4 / -12021
47P Block Elements
Match List - I with List - II :
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MCQ+4 / -12021
48P Block Elements
Given below are two statement : one is labelled as Assertion A and the other is labelled as Reason R. Assertion A : SO2(g) is absorbed to a large extent than H2(g) on activated charcoal.Reason R : SO2(g) has a higher critical temperature t...
MCQ+4 / -12021
49P Block Elements
In polythionic acid, H2SxO6 (x = 3 to 5) the oxidation state(s) of sulphur is/are :
MCQ+4 / -12021
50P Block Elements
In which one of the following molecules strongest back donation of an electron pair from halide to boron is expected?
MCQ+4 / -12021