When `F_2` is passed into a solution of mineral acid X, a greenish yellow gas Y is formed. Which on treating With slaked time forms "Z". When Red litmus is kept in contact with Z, it changes into

Cl_(2) on treatment with slaked lime forms compound X, which turns red litmus to

When NaCl is heated with sulphuric acid in the presence of MnO_(2) a greenish-yellow gas is liberated. The gas is

When NaCl is heated with sulphuric acid in the presence of MnO_(2) a greenish-yellow gas is liberated. The gas is

When Cl_(2) is passed into moist slaked lime, compound formed is

When Cl_(2) is passed into moist slaked lime, compound formed is

A black compound of manganese reacts with a halogen acid to give greenish yellow gas. When excess of this gas reacts with NH_3 an unstable trihalide is formed. In this process the oxidation state of nitrogen changes from _________ .

A black compound of manganese reacts with a halogen acid to give greenish yellow gas. When excess of this gas reacts with NH_(3) an unstable trihalide is formed. In this process the oxidation state of nitrogen changes from . . . . . . . . . .