`H_(2)S` is reducing in nature.

Assertion (A) : [Cr(H_(2)O)_(6)]Cl_(2) and [Fe(H_(2)O)_(6)]Cl_(2) are reducing in nature. Reason (R) : Unpaired electrons are present in their d - orbitals.

Among the halogens._____ is most reducing in nature.

H_(2)S is acidic but H_(2) O is neutral in nature - why ?

H_(2)S is acidic but H_(2)O ls neutraJ in nature-why?

Although H_(2) is a good reducing agent, it is usually not used in metallurgy-why?

Though H_(2) is a good reducing agent why is it not used as a reductant in metallurgy?

Explain- H_(3)PO_(2) is a strong reducing agent.

Explain why H_(2)O_(2) cannot liberate CO_(2) by reducing carbonate or bicarbonate salts.

Mention two reactions in which H_(2) acts as a reducing agent and an oxidising agent respectively.