The compounds among the following, used as disinfectants or germicides are
`CuSO_(4)* 5 H_(2) O, Na_(2) CO_(3) * 10 H_(2) O, CaOCl_(2) CaSO_(4) * 2H_(2) O`

Options

A. `CuSO_(4)*5H_(2)O and Na_(2) CO_(3)*10H_(2)O`
B. `CuSO_(4)*5H_(2)O and CaOCl_(2)`
C. `CuSO_(4)*5H_(2)O and CaSO_(2) * 2H_(2)O`
D. None of the above

Explanation

To determine which compounds among the given options are used as disinfectants or germicides, we will analyze each compound one by one.

### Step 1: Analyze CuSO4·5H2O (Copper Sulfate)
- **Name**: Copper Sulfate or Blue Vitriol
- **Usage**: It is known to be used as a germicide and insecticide.

### Step 2: Analyze Na2CO3·10H2O (Sodium Carbonate)
- **Name**: Sodium Carbonate or Washing Soda
- **Usage**: It is primarily used in the paint and dye industry, not as a disinfectant or germicide.

### Step 3: Analyze Ca(OCl)2 (Calcium Hypochlorite)
- **Name**: Calcium Hypochlorite or Bleaching Powder
- **Usage**: It is widely used as a disinfectant, particularly in water treatment and laundry.

### Step 4: Analyze CaSO4·2H2O (Calcium Sulfate)
- **Name**: Calcium Sulfate or Gypsum
- **Usage**: It is used for making tiles and wallboard, not as a disinfectant or germicide.

### Conclusion
From the analysis:
- **Copper Sulfate (CuSO4·5H2O)** is a germicide.
- **Calcium Hypochlorite (Ca(OCl)2)** is a disinfectant.
- **Sodium Carbonate (Na2CO3·10H2O)** and **Calcium Sulfate (CaSO4·2H2O)** are not used as disinfectants or germicides.

Thus, the compounds used as disinfectants or germicides are **CuSO4·5H2O (Copper Sulfate)** and **Ca(OCl)2 (Calcium Hypochlorite)**.

### Final Answer
The compounds among the following that are used as disinfectants or germicides are:
- CuSO4·5H2O (Copper Sulfate)
- Ca(OCl)2 (Calcium Hypochlorite)

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