Which of the following elements has the highest reaction rate with water?

Which of the following carbides on hydrolysis forms methane?

Which of the following is not an anomalous property of lithium?

Which of the nitrates on strong heating leaves the metal as the residue?

The correct order of electrical conductivity of alkali metal ions in their aqueous solution for $Cs^{+}$,$K^{+}$,$Na^{+}$,and $Li^{+}$ is:

Which of the following metals releases hydrogen gas upon reaction with cold and dilute $HNO_3$?