10 JEE Main 2020 s Block Elements previous-year questions with verified answers and step-by-step solutions.
These are the JEE Main 2020 previous-year questions from the s Block Elements chapter of Chemistry. Each links to a full solution with a verified answer key. To see the whole chapter across all years, visit the s Block Elements chapter hub.
The metal mainly used in devising photoelectric cells is :
Among the sulphates of alkaline earth metals, the solubilities of BeSO 4 and MgSO 4 in water, respectively, are :
Match the following compounds (Column-I) with their uses (Column-II) S. No. Column-I S.No. Column-II (I) Ca OH 2 (A) ca…
Among the statement (I – IV), the correct ones are: (I) Be has smaller atomic radius compared to Mg. (II) Be has…
Among the statements a - d , the correct ones are: ( a ) Lithium has the highest hydration enthalpy among the alkali me…
Two elements A and B have similar chemical properties. They don't form solid hydrogencarbonates, but react with nitroge…
The radius of the second Bohr orbit, in terms of the Bohr radius, a 0 , in Li 2 + is:
An alkaline earth metal ' M ' readily forms water soluble sulphate and water insoluble hydroxide. Its oxide MO is very…
On combustion of Li ,   Na and K in excess of air, the major oxides formed, respectively, are:
When gypsum is heated to 393 K , it forms: