Generally,in what forms are the elements present in the lithosphere?

During the electrolytic refining of zinc,it gets :

State whether the following statement is true or false:
Non-metals react with acids to produce a salt and hydrogen gas.

What is the molecular formula of calcium silicate (slag)?

Which of the following properties of $H_2$ (dihydrogen) gas is $NOT$ correct?

$A$ metal $E$ is stored under kerosene oil. When a small piece of it is left open in the air,it catches fire. When the product formed is dissolved in water,it turns red litmus blue.
$(i)$ Name the metal $E$.
$(ii)$ Write the chemical equations for the reaction when it is exposed to air and when the product is dissolved in water.
$(iii)$ Explain the process by which the metal is obtained from its molten chloride.