Chemistry - Complete s-block Question with Solution | TestHub

A. Correct. Clay (aluminosilicates) and lime (CaO) react upon strong heating to form cement clinkers, which are a mixture of calcium silicates and aluminates.

B. Correct. LiCl and MgCl₂ exhibit covalent character due to high polarizing power of Li⁺ and Mg²⁺, making them soluble in organic solvents like ethanol.

C. Correct. Lithium reacts with ethyne to form lithium carbide (Li₂C₂), not an ethynide. Other alkali metals form ethynides (e.g., NaC≡CH).

D. Correct. Barium (Ba) reacts with water to form Ba(OH)₂ and H₂. It also dissolves in liquid ammonia to form a blue solution containing ammoniated electrons.