Statement- 1 Pyridinium chlorochromate can convert primary alcohols into corresponding aldehyde
Statement -2 `MnO_(2)` can oxidize benzylic alcohol into corresponding carboxylic acid
Statement - 3 : `OsO_(4)` can convert alkene into trans 1,2- diol

Options

A. FFF
B. TTT
C. TTF
D. TFF

Explanation

To analyze the statements provided, we will evaluate each one based on our knowledge of organic chemistry, specifically the oxidation of alcohols and the reactions involving the compounds mentioned.

### Step-by-Step Solution:

**Step 1: Evaluate Statement 1**
- **Statement**: Pyridinium chlorochromate (PCC) can convert primary alcohols into corresponding aldehydes.
- **Analysis**: This statement is true. PCC is a mild oxidizing agent that selectively oxidizes primary alcohols to aldehydes without further oxidation to carboxylic acids.

**Step 2: Evaluate Statement 2**
- **Statement**: MnO₂ can oxidize benzylic alcohol into corresponding carboxylic acid.
- **Analysis**: This statement is also true. Manganese dioxide (MnO₂) is known to oxidize benzylic alcohols to carboxylic acids effectively.

**Step 3: Evaluate Statement 3**
- **Statement**: OsO₄ can convert alkene into trans 1,2-diol.
- **Analysis**: This statement is false. Osmium tetroxide (OsO₄) is used to convert alkenes into cis-1,2-diols through syn-dihydroxylation, not trans.

### Conclusion:
- **Statement 1**: True
- **Statement 2**: True
- **Statement 3**: False

### Final Summary:
- Statement 1 and Statement 2 are correct, while Statement 3 is incorrect.