Identify true statement among the following.

Options

A. The constituents of both compound and mixture can be separated by physical methods only.
B. The constituents of both compound and mixture can be separated by chemical methods only.
C. The constituents of compounds and mixture can be separated by chemical method and physical methods respectively.
D. The constituents of compounds and mixture can be separated by physical methods and chemical methods respectively.

Explanation

To solve the question "Identify the true statement among the following," we need to analyze the definitions and properties of compounds and mixtures, as well as the methods used to separate their constituents.

### Step-by-Step Solution:

1. **Understand Compounds:**
- A compound is a substance formed when two or more chemical elements combine chemically.
- The constituents of a compound do not retain their individual properties.
- Compounds can only be separated into their constituent elements through chemical methods.

2. **Understand Mixtures:**
- A mixture is a substance created by combining two or more different matters.
- The constituents of a mixture retain their individual properties.
- Mixtures can be separated into their constituents using physical methods.

3. **Evaluate the Options:**
- **Option 1:** "The constituents of both the compounds and the mixture can be separated by the physical method only."
- This is **false** because compounds cannot be separated by physical methods.

- **Option 2:** "The constituents of both the compounds and the mixture can be separated by the chemical methods only."
- This is **false** because mixtures can be separated by physical methods.

- **Option 3:** "The constituents of compounds and the mixture can be separated by chemical methods and the physical methods respectively."
- This is **true** because compounds require chemical methods for separation, while mixtures can be separated by physical methods.

- **Option 4:** "The constituents of compounds and the mixture can be separated by the physical method and the chemical method respectively."
- This is **false** because it incorrectly states the separation methods for compounds and mixtures.

4. **Conclusion:**
- The correct statement among the options is **Option 3**: "The constituents of compounds and the mixture can be separated by chemical methods and the physical methods respectively."