In Which Of The Following The Hydration Energy Is Higher Than The Lattice Energy?

A metal M readily forms water soluble sulphate MSO₄, water insoluble hydroxide M(OH)₂ and oxide MO which becomes inert on heating. The hydroxide is soluble in NaOH. The metal M is

On dissolving moderate amount of sodium metal in liquid NH₃ at low temperature, which one of the following does not occur?

On passing hydrogen over heated palladium, the gas

Which one of the alkaline earth metals shows some anomalous behavior and has same electronegativity as aluminium?

When magnesium burns in air compounds of magnesium formed are magnesium oxide and

A solid compound ‘X’ on heating gives CO₂ gas and a residue. The residue mixed with water forms ‘Y’. On passing an excess of CO₂ through ‘Y’ in water, a clear solution ‘Z’ is obtained. On boiling ‘Z’, compound ‘X’ is reformed. The compound ‘X’ is 

The carbonate that will not decompose on heating is

The correct order of increasing thermal stability of K₂CO₃, MgCO₃, CaCO₃ and BeCO₃ is: 

The solubility of alkali metal hydroxide follows the order:

The label on a bottle of H₂O₂ solution reads as ’10 volume’. The concentration of H₂O₂ in percentage by volume is