Which of the following has the highest decomposition temperature?
The lower the polarising power, the higher is the decomposition temperature of the alkaline earth metals. Ba has lowest polarizing power because of larger radius, hence BaCO3 has the highest decomposition temperature.
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:
In which of the following the hydration energy is higher than the lattice energy?
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
Bleaching powder slowly loses its activity when it stands in air. This is due to
Chloride of an element gives natural solution in water. In the periodic table the element belongs to
Among the following compounds of cement which is present in the highest amount?