JEE Main · Chemistry · The s-Block Elements
Biological Role of Na and K
JEE Main asked Biological Role of Na and K 2 times in 2 of the 108 shifts Lumi analysed, all in 2023. It belongs to The s-Block Elements (Chemistry). In 2023 it came in more than one shift of the same year.
Updated 2026-10-24
- Times asked
- 2
- in 2 shifts
- Years
- 1 of 8
- First asked
- 2023
- the only year
- Pattern
- Occasional
- across the analysed shifts
Questions on this idea a shift, by year
2017–2026. Asked in 2023. Years differ in how many shifts Lumi analysed, so each year is scaled to one shift of 25 Chemistry questions.
Raw count: 2017: 0 in 1 shift · 2020: 0 in 12 shifts · 2021: 0 in 24 shifts · 2022: 0 in 24 shifts · 2023: 2 in 12 shifts · 2024: 0 in 18 shifts · 2025: 0 in 8 shifts · 2026: 0 in 9 shifts.
Shift by shift
Each square is one analysed shift, in date order. Open a filled one for that paper.
How JEE Main framed it
Assertion–reason is the usual form. Skill tested: conceptual.
- Assertion-reason on alkali metals
- Match list on uses of s-block compounds
Difficulty
Every question was multiple choice.
Every question
All 2 questions
From the official JEE Main shift papers, newest first. Open one for the full question, the options and the official answer.
- 11 Apr 2023, Shift 1 · Q67Match List-I with List-II: List-I | List-II A. K | I. Thermonuclear reactions B. KCl | II. Fertilizer C. KOH | III. Sodium potassium pump…MediumMatch the list
- 8 Apr 2023, Shift 2 · Q67Given below are two statements: One is labelled as Assertion A and the other is labelled as Reason R Assertion A : Sodium is about 30…MediumAssertion–reason
Shifts: 8 Apr 2023, Shift 2, 11 Apr 2023, Shift 1.
Same topic
Other ideas in s-Block Elements
s-Block Elements has 27 ideas JEE Main has asked; 20 of them came up in more than one question. The 12 most asked are below.
- Flame Coloration7× · 2024
- Amphoterism of Beryllium Compounds5× · 2023
- Formation of Oxides, Peroxides, and Superoxides5× · 2023
- Hydration Enthalpy Trends4× · 2023
- Diagonal Relationship4× · 2022
- Covalent Character in Halides3× · 2024
- Thermal Stability Trends3× · 2022
- Melting and Boiling Point Trends2× · 2023
- Phase-Dependent Structure of BeCl22× · 2023
- Portland Cement Composition and Setting2× · 2023
- Role of Gypsum in Portland Cement2× · 2023
- Anomalous Solubility of Specific Alkali Halides2× · 2022