Read the following statements and state (T) for true and (F) for false.
I. The process of pouring out liquid into another container without disturbing the sediment is called decantation.
II. Impure substances melt at a fixed temperature.
III. Method in which the mixture containing dissolved particles is rotated at a high speed is called centrifugation.
IV. Filtration can be used to separate components of a mixture of a soluble solid and liquid.

Options

A. `{:(I,II,III,IV),(T,F,T,F):}`
B. `{:(I,II,III,IV),(F,F,T,T):}`
C. `{:(I,II,III,IV),(T,T,T,F):}`
D. `{:(I,II,III,IV),(F,F,F,T):}`

Explanation

To solve the question, we need to evaluate each statement one by one and determine if they are true (T) or false (F).

### Step-by-Step Solution:

1. **Statement I: The process of pouring out liquid into another container without disturbing the sediment is called decantation.**
- **Evaluation:** This statement is true. Decantation is indeed the process of carefully pouring liquid from one container to another without disturbing the sediment or solid particles that have settled at the bottom.
- **Conclusion:** T

2. **Statement II: Impure substances melt at a fixed temperature.**
- **Evaluation:** This statement is false. Impure substances do not melt at a fixed temperature; instead, they melt over a range of temperatures due to the presence of different components with varying melting points.
- **Conclusion:** F

3. **Statement III: Method in which the mixture containing dissolved particles is rotated at a high speed is called centrifugation.**
- **Evaluation:** This statement is true. Centrifugation is a method used to separate components of a mixture by spinning it at high speeds, which causes the denser particles to move outward and separate from the liquid.
- **Conclusion:** T

4. **Statement IV: Filtration can be used to separate components of a mixture of a soluble solid and liquid.**
- **Evaluation:** This statement is false. Filtration is used to separate insoluble solids from liquids. If the solid is soluble, it will dissolve in the liquid, making it impossible to separate them using filtration.
- **Conclusion:** F

### Final Answers:
- Statement I: T
- Statement II: F
- Statement III: T
- Statement IV: F

### Summary:
- I: T
- II: F
- III: T
- IV: F