Read the given statements carefully and state (T) for true and (F) for false ones.
I. Metals of low reactivity can be extracted directly by the electrolysis of their molten ores.
II. Prior to reduction, metal sulphides and carbonates must be converted to metal oxides.
III. Metals of high reactivity can be extracted by electrolytic oxidation.
IV. Thermite reaction is a displacement reaction and is highly exothermic.

Options

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

Answer

To determine whether the given statements are true (T) or false (F), we will evaluate each statement one by one based on our knowledge of metals and their extraction processes.

### Step-by-step Solution:

1. **Statement I: Metals of low reactivity can be extracted directly by the electrolysis of their molten ores.**
- **Evaluation:** This statement is **False (F)**. Metals with low reactivity, such as copper and gold, can be extracted from their ores through methods like reduction, rather than electrolysis, which is typically used for highly reactive metals.

2. **Statement II: Prior to reduction, metal sulphides and carbonates must be converted to metal oxides.**
- **Evaluation:** This statement is **True (T)**. Before reducing metal sulphides and carbonates, they are usually converted to metal oxides through processes like roasting or calcination, making the reduction process easier.

3. **Statement III: Metals of high reactivity can be extracted by electrolytic oxidation.**
- **Evaluation:** This statement is **False (F)**. Highly reactive metals, such as sodium and potassium, are extracted through electrolytic reduction, not oxidation.

4. **Statement IV: Thermite reaction is a displacement reaction and is highly exothermic.**
- **Evaluation:** This statement is **True (T)**. The thermite reaction involves a more reactive metal displacing a less reactive metal from its oxide, and it releases a significant amount of heat, making it highly exothermic.

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

### Summary of Results:
- Statement I: **F**
- Statement II: **T**
- Statement III: **F**
- Statement IV: **T**