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p Block Elements (Group 15, 16, 17 & 18) — JEE Main & Advanced Chemistry PYQs

487 previous year questions from p Block Elements (Group 15, 16, 17 & 18) with answers and solutions. Numbered list, year tags, and one-tap solutions — built for serious JEE / NEET practice.

487 questionsChemistrySolutions on every page
1

Correct statement(s) about the compounds X , Y and Z is(are)

JEE Advanced 2026 Solution View → 2

Correct statement(s) about the compounds P , Q and R is(are)

JEE Advanced 2026 Solution View → 3

Find the correct statements related to group 15 hydrides. A. Reducing nature increases from NH₃ to BiH₃ B. Tendency to donate lone pair of electrons decreases from NH₃ to BiH₃ C. T

JEE Main 2026 Solution View → 4

Treatment of a gas ' X ' with a freshly prepared ferrous sulphate solution gives a compound ' Y ' as a brown ring. The compounds X and Y are.

JEE Main 2026 Solution View → 5

Correct statements from the following are: A. Nitrogen in oxidation states from +1 to +4 disproportionates in acid medium. B. Nitrogen has the ability to form d - p multiple bonds

JEE Main 2026 Solution View → 6

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 SO₂ is -2 and in OF₂ it is +2 .

JEE Main 2026 Solution View → 7

Given below are two statements : Statement (I) : Oxidising power of halogens decreases in the order F₂ > Cl₂ > Br₂ > I₂ , which is the basis of "Layer test". Statement (II) : "Laye

JEE Main 2026 Solution View → 8

Given below are two statements : Statement I : The increasing order of boiling point of hydrogen halides is HCl Statement II : The increasing order of melting point of hydrogen hal

JEE Main 2026 Solution View → 9

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.

JEE Main 2026 Solution View → 10

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-

JEE Main 2026 Solution View → 11

The heating of NH ₄ NO ₂ at 60-70^ C and NH ₄ NO ₃ at 200-250^ C is associated with the formation of nitrogen containing compounds X and Y , respectively. X and Y , respectively, a

JEE Advanced 2025 Solution View → 12

During sodium nitroprusside test of sulphide ion in an aqueous solution, one of the ligands coordinated to the metal ion is converted to

JEE Advanced 2025 Solution View → 13

The complete hydrolysis of ICl ₂ ClF ₃ and BrF ₅ , respectively, gives

JEE Advanced 2025 Solution View → 14

The compound(s) with P - H bond(s) is(are)

JEE Advanced 2025 Solution View → 15

Given below are two statements : Statement I: H ₂ Se is more acidic than H ₂ Te . Statement II : H ₂ Se has higher bond enthalpy for dissociation than H ₂ Te . In the light of the

JEE Main 2025 Solution View → 16

Given below are two statements : Statement I : Nitrogen forms oxides with +1 to +5 oxidation states due to the formation of p - p bond with oxygen. Statement II : Nitrogen does not

JEE Main 2025 Solution View → 17

Given below are two statements Statement I : The N-N single bond is weaker and longer than that of P - P single bond Statement II : Compounds of group 15 elements in +3 oxidation s

JEE Main 2025 Solution View → 18

The nature of oxide ( TeO ₂ ) and hydride ( TeH ₂ ) formed by Te , respectively are :

JEE Main 2025 Solution View → 19

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

JEE Main 2025 Solution View → 20

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

JEE Main 2025 Solution View → 21

The incorrect statement among the following is options ₁ .

JEE Main 2025 Solution View → 22

The maximum covalency of a non-metallic group 15 element ' E ' with weakest E - E bond is :

JEE Main 2025 Solution View → 23

Which of the following electrolyte can be used to obtain H ₂ ~S ₂ O ₈ by the process of electrolysis?

JEE Main 2025 Solution View → 24

In the following reaction sequences, the major product Q is: L-Glucose ( [ (ii) Cr ₂ O ₃, 775 ~K , 10-20 atm ] (i) HI , P [ UV ] Cl ₂ (excess) Q )

JEE Advanced 2024 Solution View → 25

The species formed on fluorination of phosphorus pentachloride in a polar organic solvent are :

JEE Advanced 2024 Solution View → 26

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

JEE Advanced 2024 Solution View → 27

Number of oxygen atoms present in chemical formula of fuming sulphuric acid is ______.

JEE Main 2024 Solution View → 28

Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A) : Both rhombic and monoclinic sulphur exist as ( S ₈ ) whil

JEE Main 2024 Solution View → 29

On reaction of Lead Sulphide with dilute nitric acid which of the following is not formed?

JEE Main 2024 Solution View → 30

Identify the incorrect statements about group 15 elements : (A) Dinitrogen is a diatomic gas which acts like an inert gas at room temperature. (B) The common oxidation states of th

JEE Main 2024 Solution View → 31

The strongest reducing agent amont the following is:

JEE Main 2024 Solution View → 32

Among the following oxide of p - block elements, Cl 2 O 7 , CO , PbO 2 , N 2 O , NO , Al 2 O 3 , SiO 2 , N 2 O 5 , SnO 2

JEE Main 2024 Solution View → 33

Choose the correct statements from the following A. All group 16 elements form oxides of general formula E O 2 and E O 3 where E = S , S e , T e and P o . Both the types of oxides

JEE Main 2024 Solution View → 34

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

JEE Main 2024 Solution View → 35

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 a

JEE Main 2024 Solution View → 36

Anomalous behaviour of oxygen is due to its

JEE Main 2024 Solution View → 37

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 oxi

JEE Main 2024 Solution View → 38

Element not showing variable oxidation state is :

JEE Main 2024 Solution View → 39

From the given list, the number of compounds with + 4 oxidation state of Sulphur SO 3 , H 2 SO 3 , SOCl 2 , SF 4 , BaSO 4 , H 2 S 2 O 7

JEE Main 2024 Solution View → 40

The number of P - O - P bonds in H 4 P 2 O 7 , HPO 3 3 , and P 4 O 10 are respectively

JEE Main 2023 Solution View → 41

The correct group of halide ions which can be oxidised by oxygen in acidic medium is

JEE Main 2023 Solution View → 42

The incorrect statement from the following for borazine is:

JEE Main 2023 Solution View → 43

The incorrect statement regarding the reaction given below is

JEE Main 2023 Solution View → 44

Given below are two statements, one is labelled as Assertion A and the other is labelled as Reasom R . Assertion A : A solution of the product obtained by heating a mole of glycine

JEE Main 2023 Solution View → 45

One mole of P 4 reacts with 8 moles of SOCl 2 to give 4 moles of A , x mole of SO 2 and 2 moles of B . A , B and x respectively are

JEE Main 2023 Solution View → 46

Given below are two statements : Statement-I : Methane and steam passed over a heated Ni catalyst produces hydrogen gas. Statement-II : Sodium nitrite reacts with NH 4 Cl to give H

JEE Main 2023 Solution View → 47

The difference in the oxidation state of Xe between the oxidised product of Xe formed on complete hydrolysis of XeF 4 and XeF 4 is

JEE Main 2023 Solution View → 48

The ratio of sigma and π bonds present in pyrophosphoric acid is

JEE Main 2023 Solution View → 49

XeF 4 reacts with SbF 5 to form XeF m n + SbF y 2 -   m + n + y + z =     ? .

JEE Main 2023 Solution View → 50

The difference between electron gain enthalpies will be maximum between :

JEE Main 2023 Solution View → 51

Match List I with List II List I Oxide List II Type of bond A N 2 O 4 I 1 N = O bond B NO 2 II 1 N – O – N bond C N 2 O 5 III 1 N – N bond D N 2 O IV 1 N = N / N

JEE Main 2023 Solution View → 52

Match List-I with . List-I Name of reaction List-II Reagent used A Hell-Volhard Zelinsky reaction I NaOH + I 2 B Iodoform reaction II ( i ) CrO 2 Cl 2 , CS 2 ( ii ) H 2 O C Etard r

JEE Main 2023 Solution View → 53

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

JEE Main 2023 Solution View → 54

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

JEE Main 2023 Solution View → 55

Identify X , Y and Z in the following reaction. (Equation not balanced) Cl O ∙ + NO 2 → X ¯ ⟶ H 2 O Y ¯ + Z ¯

JEE Main 2023 Solution View → 56

When Cu 2 + ion is treated with KI , a white precipitate, X appears in solution. The solution is titrated with sodium thiosulphate, the compound Y is formed. X and Y respectively a

JEE Main 2023 Solution View → 57

The oxidation sate of phosphorus in hypophosphoric acid is

JEE Main 2023 Solution View → 58

Formulae for Nessler's reagent is:

JEE Main 2023 Solution View → 59

Total number of acidic oxides among N 2 O 3 , NO 2 , N 2 O , Cl 2 O 7 , SO 2 , CO , CaO , Na 2 O and NO is _____ .

JEE Main 2023 Solution View → 60

“ A ” obtained by Ostwald's method involving air oxidation of NH 3 , upon further air oxidation produces “ B ”. “ B ” on hydration forms an

JEE Main 2023 Solution View → 61

A chloride salt solution acidified with dil. HNO 3 gives a curdy white precipitate, [ A ] , on addition of AgNO 3 . [A] on treatment with NH 4 OH gives a clear solution, B.

JEE Main 2023 Solution View → 62

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

JEE Main 2023 Solution View → 63

Compound A reacts with NH 4 Cl and forms a compound B. Compound B reacts with H 2 O and excess of CO 2 to form compound C which on passing through or reaction with saturated NaCl s

JEE Main 2023 Solution View → 64

Inert gases have positive electron gain enthalpy. Its correct order is

JEE Main 2023 Solution View → 65

An ammoniacal metal salt solution gives a brilliant red precipitate on addition of dimethylglyoxime. The metal ion is :

JEE Main 2023 Solution View → 66

Which of the Phosphorus oxoacid can create silver mirror from AgNO 3 solution?

JEE Main 2023 Solution View → 67

The reaction of Xe and O 2 F 2 gives a Xe compound P . The number of moles of HF produced by the complete hydrolysis of 1 mol of P is _____ .

JEE Advanced 2022 Solution View → 68

The compound(s) which react(s) with NH 3 to give boron nitride BN is(are)

JEE Advanced 2022 Solution View → 69

The reaction of HClO 3 with HCl gives a paramagnetic gas, which upon reaction with O 3 produces

JEE Advanced 2022 Solution View → 70

The reaction of Pb NO 3 2 and NaCl in water produces a precipitate that dissolves upon the addition of HCl of appropriate concentration. The dissolution of the precipitate is due t

JEE Advanced 2022 Solution View → 71

Dissolving 1 . 24 g of white phosphorous in boiling NaOH solution in an inert atmosphere gives a gas Q . The amount of CuSO 4 (in g ) required to completely consume the gas Q is___

JEE Advanced 2022 Solution View → 72

Dinitrogen is a robust compound, but reacts at hig altitude to form oxides. The oxide of nitrogen the can damage plant leaves and retard photosynthes is

JEE Main 2022 Solution View → 73

Consider the following sulphure based oxoacids. H 2 SO 3 ,   H 2 SO 4 ,   H 2 S 2 O 8 and H 2 S 2 O 7 . Amongst these oxoacids, the number of those with peroxo O - O bond

JEE Main 2022 Solution View → 74

White phosphorus reacts with thionyl chloride to give

JEE Main 2022 Solution View → 75

Concentrated HNO 3 reacts with Iodine to give

JEE Main 2022 Solution View → 76

Dinitrogen and dioxygen the main constituents of air do not react with each other in atmosphere to form oxides of nitrogen because

JEE Main 2022 Solution View → 77

Match List-I with List-II. List-I List-II A 4 NH 3 g + 5 O 2 g → 4 NO g + 6 H 2 O g I NO g B N 2 g + 3 H 2 g → 2 NH 3 g II H 2 SO 4 l C C 12 H 22 O 11 aq + H 2 O l &#85

JEE Main 2022 Solution View → 78

Match List-I with List-II, match the gas evolved during each reaction. List-I List-II A NH 4 2 Cr 2 O 7 ⟶ Δ I H 2 B KMnO 4 + HCl → II N 2 C Al + NaOH + H 2 O &#85

JEE Main 2022 Solution View → 79

The number of inter halogens from the following having square pyramidal structure is ClF 3 ,   IF 7 ,   BrF 5 ,   BrF 3 ,   I 2 Cl 6 ,   IF 5 ,   ClF

JEE Main 2022 Solution View → 80

Which oxoacid of phosphorous has the highest number of oxygen atoms present in its chemical formula?

JEE Main 2022 Solution View → 81

The number of non-ionisable protons present in the product B obtained from the following reaction is___ C 2 H 5 OH + PCl 3 → C 2 H 5 Cl + A A + PCl 3 → B

JEE Main 2022 Solution View → 82

The total number of acidic oxides from the following list is: NO , N 2 O , B 2 O 3 , N 2 O 5 , CO , SO 3 , P 4 O 10

JEE Main 2022 Solution View → 83

The interhalogen compound formed from the reaction of bromine with excess of fluorine is a

JEE Main 2022 Solution View → 84

The oxoacid of phosphorus that is easily obtained from a reaction of alkali and white phosphorus and has two P - H bonds, is

JEE Main 2022 Solution View → 85

Among the given oxides of nitrogen ; N 2 O , N 2 O 3 , N 2 O 4 and N 2 O 5 , the number of compound/(s) having N - N bond is

JEE Main 2022 Solution View → 86

Which of the following oxoacids of sulphur contains "S" in two different oxidation states?

JEE Main 2022 Solution View → 87

Nitrogen gas is obtained by thermal decomposition of:

JEE Main 2022 Solution View → 88

Given below are two statements : Statement I: The pentavalent oxide of group- 15 element, E 2 O 5 , is less acidic than trivalent oxide, E 2 O 3 , of the same element. Statement II

JEE Main 2022 Solution View → 89

The gas produced by treating an aqueous solution of ammonium chloride with sodium nitrite is

JEE Main 2022 Solution View → 90

Given below are two statements: one is labelled as Assertion and the other is labelled as Reason. Assertion: Flourine forms one oxoacid. Reason: Flourine has smallest size amongst

JEE Main 2022 Solution View → 91

On the surface of polar stratospheric clouds, hydrolysis of chlorine nitrate gives A and B while its reaction with HCl produces B and C . A . B and C are, respectively

JEE Main 2022 Solution View → 92

Heating white phosphorus with conc. NaOH solution gives mainly

JEE Main 2022 Solution View → 93

Consider the following reaction : 2 HSO 4 - aq 1   Electrolysis 2   Hydrolysis 2 HSO 4 - + 2 H + + A The dihedral angle in product A in its solid phase at 110   K is

JEE Main 2022 Solution View → 94

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

JEE Main 2022 Solution View → 95

Consider the following reaction : A + alkali → B Major Product If B is an oxoacid of phosphorus with no P - H bond, then A is

JEE Main 2022 Solution View → 96

Polar stratospheric clouds facilitate the formation of

JEE Main 2022 Solution View → 97

PCl 5 + H 2 O → A + HCl A + H 2 O → B + HCl Find number of ionisable hydrogen in B

JEE Main 2022 Solution View → 98

PCl 5 is well known but NCl 5 is not.Because,

JEE Main 2022 Solution View → 99

Given below are the oxides : Na 2 O , As 2 O 3 , N 2 O , NO and Cl 2 O 7 Number of amphoteric oxides is :

JEE Main 2022 Solution View → 100

The most stable trihalide of nitrogen is.

JEE Main 2022 Solution View → 101

Which one of the following elemental forms is not present in the enamel of the teeth?

JEE Main 2022 Solution View → 102

The correct statement(s) related to oxoacids of phosphorous is(are)

JEE Advanced 2021 Solution View → 103

Paragraph: The reaction of K ₃ [ Fe ( CN )₆ ] with freshly prepared FeSO ₄ solution produces a dark blue precipitate called Turnbull's blue. Reaction of K ₄ [ Fe ( CN )₆ ] with the

JEE Advanced 2021 Solution View → 104

Ozonolysis of ClO 2 produces an oxide of chlorine. The average oxidation state of chlorine in this oxide is ______ .

JEE Advanced 2021 Solution View → 105

The oxide without nitrogen-nitrogen bond is :

JEE Main 2021 Solution View → 106

The number of S = O bonds present in sulphurous acid, peroxodisulphuric acid and pyrosulphuric acid, respectively are :

JEE Main 2021 Solution View → 107

Which one of the following correctly represents the order of stability of oxides, X 2 O ; ( X = halogen ) ?

JEE Main 2021 Solution View → 108

Consider the sulphides HgS , PbS , CuS , Sb 2 S 3 , As 2 S 3 and CdS . Number of these sulphides soluble in 50 % HNO 3 is ___________ .

JEE Main 2021 Solution View → 109

The number of halogen/(s) forming halic V acid is __________ .

JEE Main 2021 Solution View → 110

Which one of the following is formed (mainly) when red phosphorus is heated in a sealed tube at 803 K ?

JEE Main 2021 Solution View → 111

Match List - I with List - II: List-I (Species) List-II (Number of lone pairs of electrons on the central atom) (a) XeF 2 (i) 0 (b) XeO 2 F 2 (ii) 1 (c) XeO 3 F 2 (iii) 2 (d) XeF 4

JEE Main 2021 Solution View → 112

The number of non-ionisable hydrogen atoms present in the final product obtained from the hydrolysis of PCl 5 is :

JEE Main 2021 Solution View → 113

Chalcogen group elements are :

JEE Main 2021 Solution View → 114

The incorrect statement is:

JEE Main 2021 Solution View → 115

Number of Cl = O bonds in chlorous acid, chloric acid and perchloric acid respectively are:

JEE Main 2021 Solution View → 116

The product obtained from the electrolytic oxidation of acidified sulphate solutions, is :

JEE Main 2021 Solution View → 117

Which one of the following group- 15 hydride is the strongest reducing agent ?

JEE Main 2021 Solution View → 118

Chemical nature of the nitrogen oxide compound obtained from a reaction of concentrated nitric acid and P 4 O 10 (in 4 : 1 ratio) is:

JEE Main 2021 Solution View → 119

A xenon compound A upon partial hydrolysis gives XeO 2 F 2 . The number of lone pair of electrons present in compound A is ___ (Round off to the Nearest integer)

JEE Main 2021 Solution View → 120

The number of ionisable hydrogens present in the product obtained from a reaction of phosphorus trichloride and phosphonic acid is:

JEE Main 2021 Solution View →
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