134 JEE Main s Block Elements PYQs (2002–2026) with verified answers and step-by-step solutions.
This page collects every JEE Main s Block Elements previous-year question from Chemistry, 2002–2026. Each links to a full solution with a verified answer key. Click any year above to narrow the list, or open a question to study its step-by-step working and then practice it on PrepSharp's CBT player.
The correct set that contains all kinds (basic, acidic, amphoteric and neutral) of oxides is:
First and second ionization enthalpies of lithium are 520 kJ mol⁻¹ and 7297 kJ mol⁻¹ respectively. Energy required to c…
Given below are two statements : Statement I : Lithium and Magnesium do not form superoxide Statement II : The ionic ra…
Given below are two statements, one is labelled as Assertion A and the other is labelled as Reason R Assertion A:- The…
Lithium aluminium hydride can be prepared from the reaction of
Match List I with List II List I List II A. Cobalt catalyst I. H 2 + Cl 2 production B. Syngas II. Water gas production…
The number of alkali metal(s), from Li ,   K ,   Cs ,   Rb having ionization enthalpy greater than 400 &…
Given below are two statements: One is labelled as Assertion A and the other is labelled as Reason R : Assertion (A) :…
Lime reacts exothermally with water to give ‘ A ’ which has low solubility in water. Aqueous solution of &l…
In the given reaction cycle X ,   Y and Z respectively are
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