An element reacts with hydrogen to form a compound $A$,which on treatment with water liberates hydrogen gas. The element can be

Which element from the following exhibits a common oxidation state of $+2$?

Assertion $(A)$: $Be$ and $Mg$ do not impart any colour to the flame.
Reason $(R)$: The electrons in them are too strongly bound to get excited by the energy of the flame.
The correct option among the following is:

Which of the following alkaline earth metals is the strongest reducing agent?

Out of $BeF_{2}, MgF_{2}, CaF_{2}, SrF_{2}$,which has maximum solubility?

Give two uses of quick lime.