A compound that releases CO2 most easily upon heating is -
Solubility of alkaline earth metal sulphates in water decreases in the sequence-
1. Mg > Ca > Sr >Ba
2. Ca > Sr > Ba > Mg
3. Sr > Ca > Mg > Ba
4. Ba > Mg > Sr > Ca
Which one of the following alkali metals forms only the normal oxide M2O on heating in air?
A compound that has higher hydration enthalpy than the lattice enthalpy is :
Among the given options, what is the property of the alkaline earth metals that increases with their atomic number?
1. Solubility of their hydroxides in water
2. Solubility of their sulphates in water
3. Ionization energy
Which one of the following compounds is a peroxide?
The compound A on heating gives a colourless gas and a residue that is dissolved in water to obtain B. Excess of CO2 is bubbled through an aqueous solution of B. C is a solid. Solid C on gentle heating gives back A. The compound A is -
In the case of alkali metals, the covalent character decreases in the order
1. CsH > RbH > KH > NaH > LiH
2. KH > NaH > LiH > CsH > RbH
3. NaH > LiH > KH > RbH > CsH
4. LiH > NaH > KH > RbH > CsH
The correct order of increasing thermal stability of K2CO3, MgCO3, CaCO3 and BeCO3 is: