Give the correct order of initials T or F for following statements. Use T iff statement is true and F if it is false.
(i) `Cu^(+)` undergoes disproportionation to Cu and `Cu^(2+)` in aqueous solution.
(ii) `Hg_(2)Cl_(2)` does not impart chromyl chloride test
(iii) Sulphide ions react with sodium nitroprusside to form a purple coloured complex. in this reaction, oxidation state of iron changes.

Options

A. TFF
B. FTT
C. TFT
D. TTF

Explanation

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

### Step 1: Evaluate Statement (i)
**Statement:** `Cu^(+)` undergoes disproportionation to Cu and `Cu^(2+)` in aqueous solution.

**Analysis:**
Disproportionation is a reaction where a single species is both oxidized and reduced. In this case, `Cu^(+)` can be oxidized to `Cu^(2+)` and reduced to elemental Cu. The reaction can be represented as:
\[ 2Cu^+ \rightarrow Cu + Cu^{2+} \]
Since this reaction does occur in aqueous solution, the statement is **True (T)**.

### Step 2: Evaluate Statement (ii)
**Statement:** `Hg_(2)Cl_(2)` does not impart chromyl chloride test.

**Analysis:**
The chromyl chloride test is performed using potassium dichromate in the presence of fluoride ions. `Hg2Cl2` (mercury(I) chloride) does not dissociate to provide sufficient chloride ions for the chromyl chloride test. Therefore, it does not impart the chromyl chloride test. Thus, this statement is also **True (T)**.

### Step 3: Evaluate Statement (iii)
**Statement:** Sulphide ions react with sodium nitroprusside to form a purple coloured complex. In this reaction, the oxidation state of iron changes.

**Analysis:**
When sulfide ions react with sodium nitroprusside (Na2[Fe(CN)5NO]), they form a purple complex, which is `[Fe(CN)5NOS]^{3-}`. In this complex, iron changes its oxidation state from +3 in sodium nitroprusside to +2 in the resulting complex. Therefore, this statement is also **True (T)**.

### Conclusion
Based on the evaluations:
- Statement (i): T
- Statement (ii): T
- Statement (iii): T

Thus, the correct order of initials is **TTT**.