One too many?

A compound $A$ when treated with $B$ and then fused with a deliquescent substance $C$ gives $F$ which turns brown-red on exposure to air. When $B$ is added to to $D$ the gas produced turns into white fumes of $E$ on exposure to $G$ . Also when a solution of $D$ is treated with Manganese dioxide, fumes which bleach litmus and turn iodised starch paper blue are produced. When $D$ is treated with $C$ a white precipitate of $H$ is produced which dissolves in excess $C$ . $D$ (aq) also produces the white precipitate $H$ on treatment with $E$ and excess of $G$ . A boils at $80^\circ$ C. $F$ reacts with $C$ and carbon dioxide followed by acidification to produce $K$ which decomposes Sodium bicarbonate. Acetylated $K$ is is an antipyretic.

Find the sum of the molecular mass of $A$ and degree of unsaturation of $K$ and molecular mass of $D$ to one decimal place.

Note : Read these only if you feel the problem has insufficient information:

• $A$ can be obtained from F after treatment with the metal present in philosopher's wool.

• $H$ on excess heating produces a refractory material.

• $C$ is the hydroxide of the metal lying below the chief metal of lepidolite ore in the periodic table.