JEE Main · Chemistry · The p-Block Elements
Group 13 & 14: JEE Main previous year questions
38 questions in the 108 JEE Main shifts Lumi analysed, in 7 of 8 years. Pattern: Asked most years. 14 came in 2024–26. Here is how it is asked and which ideas come back.
- Questions
- 38
- in 35 of 108 shifts
- Years asked
- 7/8
- last asked 2026
- Weighted estimate
- 0.3
- model; history: 0.3 a shift on average, typically 0.1–0.3
Key findings
- 01
Asked in 7 of 8 years with analysed shifts and in 35 of 108 shifts: 38 questions, #90 of 196 topics.
- 02
50% of its questions since 2020 tested an idea no earlier year had asked; 14 repeated an idea from the year before.
- 03
The most repeated idea is Inert Pair Effect, asked 7 times in 7 shifts (2021, 2022, 2024, 2025, 2026), most often as “count correct statements on group 13 ion”.
- 04
JEE Main has asked 16 of the 46 ideas in this topic; 24 have never been asked, directly or inside another question.
- 05
Mostly asked as single correct (55%); 3% need a numerical answer, 26% are easy and 5% hard. It went up from 0.2 to 0.4 questions a shift since 2024.
- 06
The skill tested most is conceptual (45%), then recall (37%).
Questions a shift, year by year
Out of the 25 Chemistry questions in a shift. Years differ in how many shifts Lumi analysed, so each year is scaled to one shift.
Raw count: 2017: 0 in 1 shift · 2020: 1 in 12 shifts · 2021: 9 in 24 shifts · 2022: 10 in 24 shifts · 2023: 4 in 12 shifts · 2024: 6 in 18 shifts · 2025: 5 in 8 shifts · 2026: 3 in 9 shifts.
- Up to 2023
- 0.2
- a shift, of 25
- Since 2024
- 0.4
- 0.2
- Usual gap
- 1.0 yrs
- between years asking it
- Shifts with it
- 35/108
- 32% of analysed shifts
How it is asked
Difficulty, format and skill
Across all 38 questions on Group 13 & 14 since 2017.
Difficulty
QUESTIONS- Easy10 · 26%
- Medium26 · 68%
- Hard2 · 5%
Format
SHARE- Single correct · 21 Q55%
- Other · 6 Q16%
- Two statements · 4 Q11%
- Match the list · 3 Q8%
- Assertion–reason · 3 Q8%
- Numerical value · 1 Q3%
Skill tested
SHARE- Conceptual · 17 Q45%
- Recall · 14 Q37%
- Multi-step · 5 Q13%
- Application · 2 Q5%
Repeats
New idea, or one asked before?
Each column is a year. Blue questions tested an idea no earlier year had asked; navy ones went back to an idea from an earlier year. 2017 is the first year, so everything in it counts as new. Heights are question counts, and Lumi analysed 1 to 24 shifts a year, so compare the split inside a column rather than heights across years.
- Idea asked for the first time
- Idea asked in an earlier year
Coverage of the topic
JEE Main has asked 16 of the 46 ideas in this topic. 24 have never been asked yet.
- Asked directly16 · 35%
- Touched inside another question6 · 13%
- Never asked24 · 52%
Ideas come from Lumi’s JEE syllabus map. A never-asked idea is not a safe skip: across all of JEE Main, 22% of questions since 2024 tested an idea no earlier year had asked.
Drill down
Chapter, idea, question
Every idea JEE Main tested in this topic, with its eight years. Open one to read the questions.
14 ideas inside
Squares are the 8 years with analysed shifts, 2017 to 2026. A number is the questions that year when there is more than one; the shade is scaled to one shift, so a year with more analysed shifts (1 to 24 a year) does not look darker. Share is of the level above.
Ideas
Every idea inside this topic
16 different ideas were tested; 8 came more than once.
count correct statements on group 13 ion
Other · 7 shiftsstatement i/ii on group 13 properties
Single correct · 5 shiftscount correct statements on diborane
Other · 4 shiftssum of indices in borax formula
Assertion–reason · 3 shifts · 1 numericalidentify compounds in reaction sequence
Single correct · 3 shiftsidentify chain terminating unit in polymerization
Match the list · 3 shiftsion selection by qualitative test and ionization enthalpy
Single correct · 2 shiftsorder/ranking of basicity of oxides
Single correct · 2 shiftsidentify product of lead compound with alkali
Single correct · 1 shiftstatements on group 14 oxide nature and carbon allotropes
Two statements · 1 shiftidentify element liquid in boiling water
Single correct · 1 shiftidentify species responsible for borax bead colour
Single correct · 1 shiftgeometry of product in reaction sequence
Single correct · 1 shiftstrongest back donation in boron trihalides
Single correct · 1 shifttrue statement selection on fullerene structure
Single correct · 1 shiftcompound not preparable from diborane
Single correct · 1 shift
| Idea | Years asked | Times | Shifts | Format | Numerical |
|---|---|---|---|---|---|
| Inert Pair Effectcount correct statements on group 13 ion | 7 | 7 | OtherConceptual | – | |
| Group 13 Ionization Energy Trendstatement i/ii on group 13 properties | 6 | 5 | Single correctConceptual | – | |
| Diborane Structurecount correct statements on diborane | 4 | 4 | OtherConceptual | – | |
| Borax and Boric Acidsum of indices in borax formula | 3 | 3 | Assertion–reasonConceptual | 1 | |
| Borazine Structure and Reactivityidentify compounds in reaction sequence | 3 | 3 | Single correctRecall | – | |
| Silicones and Zeolitesidentify chain terminating unit in polymerization | 3 | 3 | Match the listRecall | – | |
| Borax Bead Test Chemistryion selection by qualitative test and ionization enthalpy | 2 | 2 | Single correctConceptual | – | |
| Acid-Base Nature of Group 13 Oxidesorder/ranking of basicity of oxides | 2 | 2 | Single correctConceptual | – | |
| Amphoterism of Tin and Lead Oxidesidentify product of lead compound with alkali | 1 | 1 | Single correctMulti-step | – | |
| Catenation Trend in Group 14statements on group 14 oxide nature and carbon allotropes | 1 | 1 | Two statementsConceptual | – | |
| Gallium Melting Point Anomalyidentify element liquid in boiling water | 1 | 1 | Single correctRecall | – | |
| Borax Bead Test Chemistryidentify species responsible for borax bead colour | 1 | 1 | Single correctRecall | – | |
| Symmetrical vs. Asymmetrical Cleavage of Diboranegeometry of product in reaction sequence | 1 | 1 | Single correctMulti-step | – | |
| Back-Bonding and Lewis Acidity in Boron Trihalidesstrongest back donation in boron trihalides | 1 | 1 | Single correctConceptual | – | |
| Carbon Allotropestrue statement selection on fullerene structure | 1 | 1 | Single correctRecall | – | |
| Preparation of Diboranecompound not preparable from diborane | 1 | 1 | Single correctRecall | – |
Times and shifts count every analysed shift. Across JEE Main, 78% of questions since 2024 went back to an idea an earlier year had asked; the rest were new. All repeated ideas
Every question
Group 13 & 14 questions, year by year
The opening words of each question as it appeared in the official paper, with the idea it tested. Open one for its options and the official answer.
JEE Main 20263 questions in 3 shifts
- 2 Apr, Shift 2Q70Among Fe, Fe, Cr and Zn, the ion that shows positive borax bead test and with highest ionisation enthalpy is:
Idea: Borax Bead Test Chemistry
MediumSingle correct - 4 Apr, Shift 2Q58The electronegativity of a group 13 element 'E' is same as that of Ge (on Pauling scale and upto one decimal point). The CORRECT…
Idea: Inert Pair Effect
Asked the year beforeHardOther - 6 Apr, Shift 1Q59Given below are two statements: Statement I: Aluminium is more electropositive than thallium as the standard electrode potential value of…
Idea: Group 13 Ionization Energy Trend
Asked the year beforeMediumTwo statements
JEE Main 20255 questions in 4 shifts
- 3 Apr, Shift 2Q60The correct orders among the following are A. Atomic radius : B < Al < Ga < In < Tl B. Electronegativity : Al < Ga < In < Tl < B C.…
Idea: Group 13 Ionization Energy Trend
Asked the year beforeMediumOther - 4 Apr, Shift 2Q57The elements of Group 13 with highest and lowest first ionisation enthalpies are respectively :
Idea: Group 13 Ionization Energy Trend
Asked the year beforeEasySingle correct - 4 Apr, Shift 2Q58Given below are two statements : Statement (I) : The first ionisation enthalpy of group 14 elements is higher than the corresponding…
Idea: Group 13 Ionization Energy Trend
Asked the year beforeMediumTwo statements - 7 Apr, Shift 1Q60The group 14 elements A and B have the first ionisation enthalpy values of 708 and 715 kJ respectively. The above…
Idea: Inert Pair Effect
Asked the year beforeMediumSingle correct - 7 Apr, Shift 2Q60The correct statements from the following are : (A) is a powerful oxidising agent (B) does not get…
Idea: Inert Pair Effect
Asked the year beforeMediumOther
JEE Main 20246 questions in 6 shifts
- 5 Apr, Shift 2Q68The correct statements from the following are : (A) The decreasing order of atomic radii of group 13 elements is Tl > In > Ga > Al > B.…
Idea: Group 13 Ionization Energy Trend
New ideaMediumSingle correct - 6 Apr, Shift 2Q67The number of ions from the following that are expected to behave as oxidising agent is :…
Idea: Inert Pair Effect
MediumOther - 8 Apr, Shift 1Q66Give below are two statements: One is labelled as Assertion A and the other is labelled as Reason R: Assertion A: The stability order of…
Idea: Inert Pair Effect
EasyAssertion–reason - 9 Apr, Shift 2Q68Match List I with List II List I | List II A. Melting Point [K] | I. B. Ionic Radius [/pm] | II.…
Idea: Group 13 Ionization Energy Trend
New ideaHardMatch the list - 1 Feb, Shift 2Q67Given below are two statements : Statement (I) : and are acidic while SnO and PbO are amphoteric in…
Idea: Catenation Trend in Group 14
New ideaMediumTwo statements - 27 Jan, Shift 1Q79Yellow compound of lead chromate gets dissolved on treatment with hot NaOH solution. The product of lead formed is a :
Idea: Amphoterism of Tin and Lead Oxides
New ideaMediumSingle correct
JEE Main 20234 questions in 3 shifts
- 6 Apr, Shift 2Q64Which one of the following elements will remain as liquid inside pure boiling water?
Idea: Gallium Melting Point Anomaly
New ideaMediumSingle correct - 6 Apr, Shift 2Q68Group-13 elements react with in amorphous form to form oxides of type (M = element). Which among the…
Idea: Acid-Base Nature of Group 13 Oxides
EasySingle correct - 13 Apr, Shift 1Q69The incorrect statement from the following for borazine is:
Idea: Borazine Structure and Reactivity
Asked the year beforeMediumSingle correct - 13 Apr, Shift 2Q89If the formula of Borax is , then ______
Idea: Borax and Boric Acid
Asked the year beforeMediumNumerical value
JEE Main 202210 questions in 10 shifts
- 25 Jul, Shift 1Q70The geometry around boron in the product 'B' formed from the following reaction is …
Idea: Symmetrical vs. Asymmetrical Cleavage of Diborane
New ideaMediumSingle correct - 26 Jul, Shift 1Q67Borazine, also known as inorganic benzene, can be prepared by the reaction of 3-equivalents of “X” with 6-equivalents of “Y”. “X” and “Y”,…
Idea: Borazine Structure and Reactivity
EasySingle correct - 26 Jul, Shift 2Q70Given below are two statements: one is labelled as **Assertion A** and the other is labelled as **Reason R**. **Assertion A:** Boric acid…
Idea: Borax and Boric Acid
New ideaEasyAssertion–reason - 29 Jul, Shift 2Q69When borax is heated with CoO on a platinum loop, blue coloured bead formed is largely due to
Idea: Borax Bead Test Chemistry
New ideaEasySingle correct - 24 Jun, Shift 1Q70Identify the correct statement for from those given below. (A) In , all B-H bonds are equivalent. (B)…
Idea: Diborane Structure
Asked the year beforeMediumOther - 25 Jun, Shift 1Q65Number of electron deficient molecules among the following , , , ,…
Idea: Diborane Structure
Asked the year beforeMediumSingle correct - 26 Jun, Shift 1Q66Choose the correct stability order of group 13 elements in their +1 oxidation state.
Idea: Inert Pair Effect
Asked the year beforeEasySingle correct - 27 Jun, Shift 1Q69Match List - I with List - II. List - I (Si-Compounds) (A) (B) (C)…
Idea: Silicones and Zeolites
Asked the year beforeEasyMatch the list - 29 Jun, Shift 1Q70Match List - I with List - II. List - I (Metal) (A) Cs (B) Ga (C) B (D) Si List - II (Application) (I) High temperature thermometer (II)…
Idea: Silicones and Zeolites
Asked the year beforeMediumMatch the list - 29 Jun, Shift 2Q71Aqueous solution of which of the following boron compounds will be strongly basic in nature?
Idea: Borax and Boric Acid
New ideaMediumSingle correct
JEE Main 20219 questions in 8 shifts
- 3 Aug, Shift 2Q37Silicones are group of organosilicon polymers. Which one among the following acts as a chain terminating unit in silicone polymerization?
Idea: Silicones and Zeolites
New ideaEasySingle correct - 4 Aug, Shift 1Q39Which among the following cannot be prepared from Diborane?
Idea: Preparation of Diborane
New ideaMediumSingle correct - 27 Aug, Shift 1Q35In which one of the following molecules strongest back donation of an electron pair from halide to boron is expected ?
Idea: Back-Bonding and Lewis Acidity in Boron Trihalides
New ideaEasySingle correct - 24 Feb, Shift 1Q50Given below are two statements : Statement I : Colourless cupric metaborate is reduced to cuprous metaborate in a luminous flame.…
Idea: Borax Bead Test Chemistry
New ideaMediumTwo statements - 25 Feb, Shift 1Q37The correct statement about is :
Idea: Diborane Structure
New ideaMediumSingle correct - 26 Feb, Shift 2Q37Which pair of oxides is acidic in nature ?
Idea: Acid-Base Nature of Group 13 Oxides
New ideaMediumSingle correct - 26 Feb, Shift 2Q38Given below are two statements : one is labelled as Assertion A and the other is labelled as Reason R. Assertion A : In ,…
Idea: Inert Pair Effect
New ideaMediumAssertion–reason - 22 Jul, Shift 2Q39Given below are the statements about diborane. (a) Diborane is prepared by the oxidation of with . (b)…
Idea: Diborane Structure
New ideaMediumOther - 16 Mar, Shift 2Q31The INCORRECT statement regarding the structure of is :
Idea: Carbon Allotropes
New ideaMediumSingle correct
JEE Main 20201 question in 1 shift
- 9 Jan, Shift 2Q35The reaction of (A) with in tetrahydrofuran gives inorganic benzene (B). Further, the reaction…
Idea: Borazine Structure and Reactivity
New ideaMediumSingle correct
Questions from the official JEE Main Paper 1 shifts published by NTA (CBSE for 2017). Questions NTA dropped are left out. Topic and idea tags, counts and notes are Lumi’s.