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p Block Elements (Group 13 & 14) — JEE Main & Advanced Chemistry PYQs

252 previous year questions from p Block Elements (Group 13 & 14) with answers and solutions. Numbered list, year tags, and one-tap solutions — built for serious JEE / NEET practice.

252 questionsChemistrySolutions on every page
1

Given below are two statements : Statement I: Aluminium upon reaction with NaOH forms [Al(OH)₆]³⁻ ion. Statement II: The geometry of ICl₄^- , ClO₃^- and IBr₂^- is square planar, py

JEE Main 2026 Solution View → 2

Consider the following reactions Na ₂ ~B ₄ O ₇ 2 X + Y CuSO ₄+ Y Non-Luminous flame Z + SO ₃ 2 Z +2 X + Carbon Luminous flame 2 Q + Na ₂ ~B ₄ O ₇+ CO The oxidation states of Cu in

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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 2 PbO ; _ r G ^ (1) SnO ₂+ Sn 2 SnO ; _ r G ^ (2

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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 decreas

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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 oxi

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Consider the following reactions. PbCl ₂+ K ₂ CrO ₄ ~A +2 KCl (Hot solution) A + NaOH B + Na ₂ CrO ₄ PbSO ₄+4 CH ₃ COONH ₄ ( NH ₄ )₂ SO ₄+ X In the above reactions, A , B and X are

JEE Main 2026 Solution View → 7

Given below are two statements : Statement I : The number of pairs among [ SiO ₂, CO ₂ ], [ SnO , SnO ₂ ], [ PbO , PbO ₂ ] and [ GeO , GeO ₂ ] , which contain oxides that are both

JEE Main 2026 Solution View → 8

The group 14 elements A and B have the first ionisation enthalpy values of 708 and 715 ~kJ ~mol ⁻¹ respectively. The above values are lowest among their group members. The nature o

JEE Main 2025 Solution View → 9

Given below are two statements : Statement (I) : The first ionisation enthalpy of group 14 elements is higher than the corresponding elements of group 13. Statement (II) : Melting

JEE Main 2025 Solution View → 10

Consider the following elements In , Tl , Al , Pb , Sn and Ge . The most stable oxidation states of elements with highest and lowest first ionisation enthalpies, respectively, are

JEE Main 2025 Solution View → 11

Given below are the atomic numbers of some group 14 elements. The atomic number of the element with lowest melting point is :

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Give below are two statements: One is labelled as Assertion ( A ) and the other is labelled as Reason R: Assertion A: The stability order of +1 oxidation state of Ga, In and T1 is

JEE Main 2024 Solution View → 13

The number of ions from the following that are expected to behave as oxidising agent is : ( Sn ⁴⁺, Sn ²⁺, Pb ²⁺, Tl ³⁺, Pb ⁴⁺, Tl ⁺ )

JEE Main 2024 Solution View → 14

Evaluate the following statements related to group 14 elements for their correctness. (A) Covalent radius decreases down the group from ( C ) to ( Pb ) in a regular manner. (B) Ele

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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 electronegativi

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The number of neutrons present in the more abundant isotope of boron is ' (x ) '. Amorphous boron upon heating with air forms a product, in which the oxidation state of boron is '

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Match List - I with List - II. List - I Compound List-II Use (A) Carbon tetrachloride (I) Paint remover (B) Methylene chloride (II) Refrigerators and air conditioners (C) DDT (III)

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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 proper

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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 acidif

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Consider the oxides of group 14 elements S i O 2 , G e O 2 , S n O 2 , P b O 2 , C O and G e O . The amphoteric oxides are

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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

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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

JEE Main 2024 Solution View → 23

The stoichiometric reaction of 516 g of dimethyldichlorosilane with water results in a tetrameric cyclic product X in 75 % yield. The weight (in g ) of X obtained is ____________ [

JEE Advanced 2023 Solution View → 24

For a good quality cement, the ratio of silica to alumina is found to be

JEE Main 2023 Solution View → 25

Better method for preparation of BeF 2 , among the following is

JEE Main 2023 Solution View → 26

If the formula of Borax is Na 2   B 4 O x ( OH ) y · zH 2 O , then   x + y + z =   _ _ _ _ _ _

JEE Main 2023 Solution View → 27

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 o

JEE Main 2023 Solution View → 28

Structures of BeCl 2 in solid state, vapour phase and at very high temperature respectively are:

JEE Main 2023 Solution View → 29

The correct order of bond enthalpy ( kJ mol – 1 ) is:

JEE Main 2023 Solution View → 30

The Lewis acid character of boron tri halides follows the order:

JEE Main 2023 Solution View → 31

Boric acid in solid, whereas BF 3 is gas at room temperature because of

JEE Main 2023 Solution View → 32

Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A): In expensive scientific instruments, silica gel is kept in

JEE Main 2023 Solution View → 33

Given below are two statements: Statement I : Nickel is being used as the catalyst for producing syn gas and edible fats. Statement II : Silicon forms both electron rich and electr

JEE Main 2023 Solution View → 34

During the borax bead test with CuSO 4 , a blue green colour of the bead was observed in oxidising flame due to the formation of

JEE Main 2023 Solution View → 35

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 CO 2 . CO is neutral wh

JEE Main 2023 Solution View → 36

The treatment of galena with HNO 3 produces a gas that is

JEE Advanced 2022 Solution View → 37

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

JEE Main 2022 Solution View → 38

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 BF 6 3 - Reason R : Size of B is very sma

JEE Main 2022 Solution View → 39

Given below are two statements: Statement I : The chlorides of Be and Al have Cl-bridged structure. Both are soluble in organic solvents and act as Lewis bases. Statement II: Hydro

JEE Main 2022 Solution View → 40

Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R . Assertion A : Boric acid is a weak acid Reason R : Boric acid is not able to

JEE Main 2022 Solution View → 41

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

JEE Main 2022 Solution View → 42

Match List - I with List - II List-II List-II A N 2 g + 3 H 2 g → 2 NH 3 g I Cu B CO g + 3 H 2 g → CH 4 g + H 2 O g II Cu / ZnO - Cr 2 O 3 C CO g + H 2 g → HCHO g

JEE Main 2022 Solution View → 43

The geometry around boron in the product ' B ' formed from the following reaction is BF 3 + NaH ⟶ 450 K A + NaF A + NMe 3 → B

JEE Main 2022 Solution View → 44

Aqueous solution of which of the following boron compounds will be strongly basic in nature?

JEE Main 2022 Solution View → 45

Match List-I with Match List-II List-I (Metal) List-II (Application) (A) Cs (I) High temperature thermometer (B) Ga (II) Water repellent sprays (C) B (III) Photoelectric cells (D)

JEE Main 2022 Solution View → 46

Match List - I with List - II. List-I ( Si -Compounds) List-II ( Si -Polymeric/Other Products) A CH 3 4 Si I Chain Silicone B CH 3 Si OH 3 II Dimeric Silicone C CH 3 2 Si OH 2 III

JEE Main 2022 Solution View → 47

The number of bridged oxygen atoms present in compound B formed from the following reactions is Pb NO 3 2 ⟶ 673 K A + PbO + O 2 A ⟶ Dimerise B

JEE Main 2022 Solution View → 48

Identify the correct statement for B 2 H 6 from those given below. (A) In B 2 H 6 , all B - H bonds are equivalent. (B) In B 2 H 6 , there are four 3 -centre- 2 -electron bonds. (C

JEE Main 2022 Solution View → 49

In which one of the following molecules strongest back donation of an electron pair from halide to boron is expected?

JEE Main 2021 Solution View → 50

The ratio of number of water molecules in Mohr's salt and potash alum is × 10 - 1 . (Integer answer)

JEE Main 2021 Solution View → 51

Which one of the following compounds of Group- 14 elements is not known?

JEE Main 2021 Solution View → 52

Given below are the statements about diborane (a) Diborane is prepared by the oxidation of NaBH 4 with I 2 (b) Each boron atom is in sp 2 hybridized state (c) Diborane has one brid

JEE Main 2021 Solution View → 53

The INCORRECT statement regarding the structure of C 60 is :

JEE Main 2021 Solution View → 54

Compound A used as a strong oxidizing agent is amphoteric in nature. It is the part of lead storage batteries. Compound A is:

JEE Main 2021 Solution View → 55

The incorrect statement about B 2 H 6 is :

JEE Main 2021 Solution View → 56

Al 2 O 3 was leached with alkali to get X . The solution of X on passing of gas Y , forms Z . X , Y and Z respectively are

JEE Main 2021 Solution View → 57

On heating, lead (ll) nitrate gives a brown gas (A). The gas (A) on cooling changes to a colourless solid/liquid (B). (B) on heating with NO changes to ablue solid (C). The oxidati

JEE Main 2020 Solution View → 58

On heating compound A gives a gas B which is constituent of air. This gas when treated with H 2 in the presence of a catalyst gives another gas C which is basic in nature. A should

JEE Main 2020 Solution View → 59

The reaction of H 3 N 3 B 3 C l 3 A with L i B H 4 in tetrahydrofuran gives inorganic benzene B . Further, the reaction of A with C leads to H 3 N 3 B 3 M e 3 . Compounds B and C r

JEE Main 2020 Solution View → 60

‘ X ’ melts at low temperature and is a bad conductor of electricity in both liquid and solid state. X is:

JEE Main 2020 Solution View → 61

When an inorganic compound X having 3 c − 2 e − as well as 2 c - 2 e - bonds react with NH 3 gas at a certain temperature, gives a compound Y, isostructural with benzene. Compound

NTA Abhyas JEE Main 2020 Solution View → 62

A: Hybridization of carbon is s p 2 in all its crystalline allotropes. R: There are alternate double-single bonds in each allotrope of carbon.

NTA Abhyas JEE Main 2020 Solution View → 63

The dissolution of A l O H 3 by a solution of N a O H results in the formation of:

NTA Abhyas JEE Main 2020 Solution View → 64

T l I 3 is an ionic compound. In the aqueous solution it provides -

NTA Abhyas JEE Main 2020 Solution View → 65

Number of oxygen atoms shared per SiO 4 4 - tetrahedron in single chain silicates are ______

NTA Abhyas JEE Main 2020 Solution View → 66

Which type of silicate compound, Beryl Be 3 Al 2 Si 6 O 18 is?

NTA Abhyas JEE Main 2020 Solution View → 67

Diborane reacts with ammonia to initially forms X which on further heating gives borazine X is

NTA Abhyas JEE Main 2020 Solution View → 68

The correct Lewis acid order for boron halides is

NTA Abhyas JEE Main 2020 Solution View → 69

Incorrect statement about carbon monoxide is: -

NTA Abhyas JEE Main 2020 Solution View → 70

The gas produced by the passage of air over hot coke is

NTA Abhyas JEE Main 2020 Solution View → 71

Which of the following reactions is not involved in serpeck's process of leaching of A l 2 O 3 from white bauxite ore?

NTA Abhyas JEE Main 2020 Solution View → 72

Which one is the wrong statement?

NTA Abhyas JEE Main 2020 Solution View → 73

In the context of the Hall-Heroult process for the extraction of Al, which of the following statements is false ?

NTA Abhyas JEE Main 2020 Solution View → 74

Which element among the following cannot form an amphoteric oxide?

NTA Abhyas JEE Main 2020 Solution View → 75

Which of the following statements regarding boric acid is false -

NTA Abhyas JEE Main 2020 Solution View → 76

Which of the following statement about anhydrous aluminum chloride is correct?

NTA Abhyas JEE Main 2020 Solution View → 77

Which one of the following is the correct statement?

NTA Abhyas JEE Main 2020 Solution View → 78

A l C l 3 forms dimer in vapour phase but B C l 3 does not because

NTA Abhyas JEE Main 2020 Solution View → 79

The total number of boron-oxygen bonds in borax is ′ x ′ and boron-oxygen-boron bonds are ′ y ′ . Then the value of x - y is:

NTA Abhyas JEE Main 2020 Solution View → 80

With respect to graphite and diamond, which of the statement (s) given below is (are) correct? 1 . Graphite has higher electrical conductivity than diamond 2 . Graphite is harder t

NTA Abhyas JEE Main 2020 Solution View → 81

Three moles of B 2 H 6 are completely reacted with methanol. The number of moles of boron containing product formed is

NTA Abhyas JEE Main 2020 Solution View → 82

When metal 'M' is treated with NaOH, a white gelatinous precipitate 'X' is obtained, which is soluble in excess of NaOH. Compound 'X' when heated strongly gives an oxide which is u

NTA Abhyas JEE Main 2020 Solution View → 83

In Borax N a 2 B 4 O 7 . 10 H 2 O if number of s p 2 hybridised B-atoms are X and number of s p 3 hybridised B-atom are Y. What is the value of sum X + Y ?

NTA Abhyas JEE Main 2020 Solution View → 84

Reactivity of borazole is greater than that of benzene because

NTA Abhyas JEE Main 2020 Solution View → 85

The intermediate product (X) formed in the following reaction is B 2 H 6 + 6 N H 3 → 3 X → h e a t 2 B 3 N 3 H 6 + 12 H 2

NTA Abhyas JEE Main 2020 Solution View → 86

The main reason that S i C l 4 is easily hydrolysed as compared to C C l 4 is that

NTA Abhyas JEE Main 2020 Solution View → 87

2 RCl + Si → 5 7 0 K Cu powder R 2 SiCl 2 → H 2 O R 2 Si(OH) 2 → Polymerisation X , then X will be

NTA Abhyas JEE Main 2020 Solution View → 88

A l C l 3 achieves stability by forming a dimer. In trivalent state the compound is hydrolysed in water. A l C l 3 in acidified aqueous solution forms

NTA Abhyas JEE Main 2020 Solution View → 89

Identify X and Y in the following reaction BCl 3 + NH 4 Cl → 140 o C / C 6 H 5 Cl X → NaBH 4 Y

NTA Abhyas JEE Main 2020 Solution View → 90

N a B H 4 + I 2 → X + Y + Z BF 3 + LiAlH 4 → 450 K X + P B F 3 + L i A l H 4 → X + Q + R X, Y, Z, P, Q and R in the reactions are

NTA Abhyas JEE Main 2020 Solution View → 91

Compound (X) on reduction with L i A l H 4 gives a hydride (Y) containing 21.72% hydrogen along with other products. The compound (Y) reacts with air explosively resulting in boron

NTA Abhyas JEE Main 2020 Solution View → 92

In borax if m is number of hydroxy groups and 'n' is number of water molecules. What is the sum of m + n?

NTA Abhyas JEE Main 2020 Solution View → 93

Match the items in Column I with its main use listed in Column II: Column I Column II A. Silica gel i. Transistor B. Silicon ii. Ion-exchanger C. Silicone iii. Drying agent D. Sili

NTA Abhyas JEE Main 2020 Solution View → 94

Total number of Boron atoms in anionic part of borax which participate in back bonding.

NTA Abhyas JEE Main 2020 Solution View → 95

The ions present in A l 4 C 3 , C a C 2 and M g 2 C 3 are respectively

NTA Abhyas JEE Main 2020 Solution View → 96

A cyclic silicate having structural formula S i 6 O 18 n - . What is value of n?

NTA Abhyas JEE Main 2020 Solution View → 97

In the following series of reactions: i A + 2 HCl + 5 H 2 O ⟶ 2 NaCl + X ii X ⟶ 3 7 0 K Δ H BO 2 ⟶ Red heat Δ Z iii 4 BF 3 + 3 LiAlH 4 ⟶ Y + 3 LiF + 3 AlF 3 The compounds A, X, Z a

NTA Abhyas JEE Main 2020 Solution View → 98

The general trend in the properties of elements of carbon family shows that with increase in atomic number

NTA Abhyas JEE Main 2020 Solution View → 99

Which of the following statements is correct?

NTA Abhyas JEE Main 2020 Solution View → 100

The silicate anion in the mineral wollastonite is a chain of three S i O 4 4 - tetrahedra, that share corners with adjacent tetrahedra. The charge of the silicate anion is

NTA Abhyas JEE Main 2020 Solution View → 101

Which is not true about borax?

NTA Abhyas JEE Main 2020 Solution View → 102

In the reaction, 8 A l + 3 F e 3 O 4 → 4 A l 2 O 3 + 9 F e , the number of electrons transferred from reductant to oxidant is

NTA Abhyas JEE Main 2020 Solution View → 103

Which of the group element does not form M(III) iodide?

NTA Abhyas JEE Main 2020 Solution View → 104

2RCl + Si → 570 K Cu powder R 2 SiCl 2 → H 2 O R 2 Si(OH) 2 → Polymerisation (A), (A)

NTA Abhyas JEE Main 2020 Solution View → 105

S i C l 4 → H 2 O A → H e a t B → H e a t N a 2 C O 3 C , The compound ( C ) is

NTA Abhyas JEE Main 2020 Solution View → 106

An inorganic compound A made of two most occurring elements in the earth’s crust and it is used in building construction when made to react with carbon forms a poisonous gas B whic

NTA Abhyas JEE Main 2020 Solution View → 107

Which of the following is the correct order of stability of allotropes of carbon ?

NTA Abhyas JEE Main 2020 Solution View → 108

In the Hoop’s process for refining of aluminum, the fused materials form three different layers and they remain separated during electrolysis also. This is because

NTA Abhyas JEE Main 2020 Solution View → 109

Pyroxenes are class of silicate minerals, which exhibit a polymeric chain structure, as shown below Its simplest repeating unit is

NTA Abhyas JEE Main 2020 Solution View → 110

BaTi [ S i 3 O 9 ] is a class of

NTA Abhyas JEE Main 2020 Solution View → 111

The incorrect statement regarding above reactions is

NTA Abhyas JEE Main 2020 Solution View → 112

Alumino-thermite process is used for the extraction of metals, whose oxides are

NTA Abhyas JEE Main 2020 Solution View → 113

Match list I with list II and select this correct answer using the codes given below the lists. List I (Type of glass) List II (Property/use) ( p ) Borosilicate glass 1 . Very high

NTA Abhyas JEE Main 2020 Solution View → 114

Certain organic compound on combustion produces three gaseous oxides A, B and C. A and C turned lime water milky, B turned anhydrous C u S O 4 blue and C turned K 2 C r 2 O 7 solut

NTA Abhyas JEE Main 2020 Solution View → 115

Which types of bonds is/are present in diborane ( B 2 H 6 )?

NTA Abhyas JEE Main 2020 Solution View → 116

Which is best method for leaching of bauxite ore of aluminium, containing impurities of iron oxide?

NTA Abhyas JEE Main 2020 Solution View → 117

Total number of boron atoms in anionic part of borax which is/are sp 3 hybridised?

NTA Abhyas JEE Main 2020 Solution View → 118

In borax number of B − O − B bonds are X and number of boron atoms are Y . Then X+Y is

NTA Abhyas JEE Main 2020 Solution View → 119

Which of the following set is having correct statements here regarding both B and Al? 1 . They combine with nitrogen to form nitrides 2 . They react with HCl to form chlorides 3 .

NTA Abhyas JEE Main 2020 Solution View → 120

The C - C bond length is maximum in:

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