Hot and concentrated solution of Borax is treated with `HCl` to give` A` and `B`.`B` on strong heating undergoes dehydration to give `C`.Then `C` is.

When borax is heated strongly it gives

Hot sodium hydroxide when treated with chlorine gives

Borax is treated with hot conc .HCl to get NACl and compound A .The oxidation state of B in compound A is

When a brown compound of manganese (A) is treated with HCl it gives a gas (B). The gas taken in excess, reacts with NH_(3) to give an explosive compound (C ). Identify compound A, B and C.

When a brown compound of manganese [A] is treated with HCl, it gives a gas [B]. The gas taken in excess, reacts with NH_(3) to give as explosive compound [C]. Identify compound A, B and C.

Acetone undergoing Aldol condensation followed by dehydration gives