Small quantities of compounds TX, TY and TZ are put into separate test tubes containing X, Y and Z solutions. TX does not react with any of these. TY reacts with both X and Z. TZ reacts only with X. The decreasing order of ease of oxidation of the anions `X^(-),Y^(-) and Z^(-)` is

Options

A. `(X^-,Y^-,Z^-)`
B. `(Z^-,X^-,Y^-)`
C. `(Y^-,X^-,Z,^-`
D. `(X^-,Z^-,Y^-)`

Explanation

To determine the decreasing order of ease of oxidation of the anions \(X^-\), \(Y^-\), and \(Z^-\), we will analyze the reactions of the compounds \(TX\), \(TY\), and \(TZ\) with the respective solutions.

### Step-by-Step Solution:

1. **Identify the Reactions:**
- \(TX\) does not react with any of the solutions \(X\), \(Y\), or \(Z\).
- \(TY\) reacts with both \(X\) and \(Z\).
- \(TZ\) reacts only with \(X\).

2. **Write the Reactions:**
- When \(TY\) reacts with \(X\):
\[ TY + X \rightarrow TX + Y \]
Here, \(Y\) is produced, indicating that \(Y^-\) is oxidized.

- When \(TY\) reacts with \(Z\):
\[ TY + Z \rightarrow TZ + Y \]
Again, \(Y\) is produced, indicating that \(Y^-\) is oxidized.

- When \(TZ\) reacts with \(X\):
\[ TZ + X \rightarrow TX + Z \]
Here, \(Z\) is produced, indicating that \(Z^-\) is oxidized.

3. **Analyze Oxidation and Reduction:**
- From the reactions, we see that \(Y^-\) is oxidized in both reactions involving \(TY\).
- \(Z^-\) is oxidized in the reaction involving \(TZ\) and \(X\).
- \(X^-\) does not appear to be oxidized in any of the reactions, suggesting it has the least tendency to oxidize.

4. **Determine the Order of Ease of Oxidation:**
- Since \(Y^-\) is oxidized in both reactions involving \(TY\), it has the highest tendency to oxidize.
- \(Z^-\) is oxidized in one reaction, so it has a moderate tendency to oxidize.
- \(X^-\) does not get oxidized in any reaction, indicating it has the least tendency to oxidize.

5. **Final Order:**
- Therefore, the decreasing order of ease of oxidation of the anions is:
\[ Y^- > Z^- > X^- \]

### Final Answer:
The decreasing order of ease of oxidation of the anions \(X^-\), \(Y^-\), and \(Z^-\) is:
\[ Y^- > Z^- > X^- \]