Anhydrous calcium chloride $(CaCl_2)$ is which type of compound?

The number of neutrons in tritium is

Write the physical properties of $H_2$.

Hydrogen gains an electron to achieve the configuration of a noble gas. It behaves like which of the following?

Calorific value of producer gas is low because of

Complete the following chemical reactions:
$(i) \ PbS_{(s)} + H_2O_{2_{(aq)}} \to $
$(ii) \ MnO_{4_{(aq)}}^{-} + H_2O_{2_{(aq)}} \to $
$(iii) \ CaO_{(s)} + H_2O_{(g)} \to $
$(iv) \ AlCl_{3_{(g)}} + H_2O_{(l)} \to $
$(v) \ Ca_3N_{2_{(s)}} + H_2O_{(l)} \to $
Classify the above into $(a)$ hydrolysis,$(b)$ redox and $(c)$ hydration reactions.