CSIR NET 2023 || Chemical Science || Redox Chemistry || 28 November 2022

The oxidation number of phosphorus in pyrophosphoric acids is:

Complete the following reactions:

Zn(NH₂)₂ + 2KNH₂ 

and  are respectively

Choose the correct statement(s) among the following is/are

A. SnCl₂.2H₂O is a reducing agent.
B. SnO₂ reacts with KOH to form K₂[Sn(OH)₆].
C. A solution of PbCl₂ in HCl contains Pb²⁺ and Cl− ions.
D. The reaction of Pb₃O₄ with hot dilute nitric acid to give PbO₂ is a redox reaction.

Consider four species A, B, C and D

Oxidation of A with C in an acidic medium gives D . A, B, C and D are respectively