A white amorphous A on heating yields a colourless, non-combustible gas B a solid C .The latter compound assumes a yellow colour on heating and changes to white on cooling C dissolve in dilute hydrochloric acid and the resulting solution gives a white precipitate with `K_(4)Fe(CN)_(6)` solution .A dissolve in dilute HCI with the evolution of gas , which is identical in all respect B turns lime milky , but the milkiness disuppears with the contimous passage of gas solution of A as obtained above gives a white precipitate D on the addition of excess of `NH_(4)OH` and passing `H_(2)S` another portion of the solution gives initialy a white precipitate E on the addition of NaOH solution , which dissolves on further addition of base , identify the compounds A,B,C,D and E `

Explanation

To solve the problem step by step, we will identify the compounds A, B, C, D, and E based on the information provided in the question.

### Step 1: Identify Compound A
- **Given Information**: A white amorphous compound A on heating yields a colorless, non-combustible gas B and a solid C.
- **Analysis**: The solid C changes color from yellow on heating to white on cooling. This behavior is characteristic of zinc oxide (ZnO), which is yellow when hot and white when cool.
- **Conclusion**: Therefore, we can deduce that **C = ZnO**.

### Step 2: Identify Gas B
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