The group II precipitate soluble in yellow ammonium sulphide may be

Options

A. `As,Sb,Sn`
B. `Ca,Hg,Bi,Cd`
C. Both (a) and (b)
D. None of these

Explanation

To solve the question regarding which Group II precipitate is soluble in yellow ammonium sulfide, we can follow these steps:

### Step-by-Step Solution:

1. **Identify Group II Cations**:
The Group II cations that we need to consider include arsenic (As³⁺), bismuth (Bi³⁺), mercuric ion (Hg²⁺), copper (Cu²⁺), cadmium (Cd²⁺), tin (Sn²⁺), and antimony (Sb³⁺).

2. **Understand the Group Reagent**:
The group reagent for Group II cations is a combination of dilute hydrochloric acid (HCl) and hydrogen sulfide (H₂S). This reagent helps to precipitate the sulfides of these cations.

3. **Identify Soluble Sulfides in Yellow Ammonium Sulfide**:
Yellow ammonium sulfide (NH₄₂S) can dissolve certain metal sulfides. We need to determine which of the sulfides of the Group II cations are soluble in this reagent.

4. **List the Cations and Their Sulfides**:
The sulfides of the cations that we are considering are:
- Arsenic sulfide (As₂S₃)
- Antimony sulfide (Sb₂S₃)
- Tin sulfide (SnS)

5. **Check Solubility in Yellow Ammonium Sulfide**:
- Arsenic sulfide (As₂S₃) is soluble in yellow ammonium sulfide.
- Antimony sulfide (Sb₂S₃) is also soluble in yellow ammonium sulfide.
- Tin sulfide (SnS) is soluble in yellow ammonium sulfide.

6. **Conclusion**:
Based on the solubility of the sulfides in yellow ammonium sulfide, the cations whose sulfides are soluble are arsenic, antimony, and tin.

### Final Answer:
The Group II precipitate soluble in yellow ammonium sulfide may be arsenic, antimony, and tin.