AP EAPCET 21 May 2025 Shift 1 Paper

Option A:"Solubility of carbonates in water decreases down the group."For alkaline earth metals (Group 2):The solubility of carbonates $( MCO _3)$ actually decreases down the group because lattice energy decreases more slowly than the hydration energy.This statement is correct.Option B:"All the sulphates are thermally stable."For sulphates $( MSO _4)$ of alkaline earth metals:All of them are thermally stable, i.e., they do not decompose easily on heating.This statement is correct.Option C:"All the nitrates decompose on heating."For nitrates $( M ( N O _{ 3 }) _{ 2 })$ of group 2:All nitrates decompose on heating to give oxides, nitrogen dioxide, and oxygen. This statement is correct.Option D:"All halides are ionic in nature."For halides ( $M X _{ 2 }$ ):Most are ionic, but $B e C l _{ 2 }$ (beryllium chloride) has covalent character due to the small size and high polarizing power of $Be ^{2+}$.This statement is incorrect.Final Answer: Option D - All halides are ionic in nature (Incorrect statement).